WO2003082005A2 - Slow release nitrogen fertilizer - Google Patents
Slow release nitrogen fertilizer Download PDFInfo
- Publication number
- WO2003082005A2 WO2003082005A2 PCT/US2003/008454 US0308454W WO03082005A2 WO 2003082005 A2 WO2003082005 A2 WO 2003082005A2 US 0308454 W US0308454 W US 0308454W WO 03082005 A2 WO03082005 A2 WO 03082005A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- urea
- formaldehyde
- aqueous
- particulate
- methylol
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C1/00—Apparatus, or methods of use thereof, for testing or treating seed, roots, or the like, prior to sowing or planting
- A01C1/06—Coating or dressing seed
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C9/00—Fertilisers containing urea or urea compounds
- C05C9/02—Fertilisers containing urea or urea compounds containing urea-formaldehyde condensates
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G5/00—Fertilisers characterised by their form
- C05G5/20—Liquid fertilisers
- C05G5/27—Dispersions, e.g. suspensions or emulsions
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G5/00—Fertilisers characterised by their form
- C05G5/30—Layered or coated, e.g. dust-preventing coatings
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G5/00—Fertilisers characterised by their form
- C05G5/30—Layered or coated, e.g. dust-preventing coatings
- C05G5/37—Layered or coated, e.g. dust-preventing coatings layered or coated with a polymer
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/20—Reduction of greenhouse gas [GHG] emissions in agriculture, e.g. CO2
- Y02P60/21—Dinitrogen oxide [N2O], e.g. using aquaponics, hydroponics or efficiency measures
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S47/00—Plant husbandry
- Y10S47/09—Physical and chemical treatment of seeds for planting
Definitions
- the present invention relates to a new source of slow release nitrogen for enhancing the delivery of nitrogen needed for plant development and growth.
- the invention specifically relates to a new particulate source of slow release nitrogen, and to use of the particulate nitrogen source for enhancing plant development and growth, by delivering nutrient nitrogen over an extended period of time to growing plants.
- the present invention also is directed to the use of the particulate source of slow release nitrogen in formulating a granular fertilizer.
- Fertilizer is often applied as a formulated (N-P-K) solid, granular or powder, or sometimes as a liquid to an area to be fertilized.
- N-P-K formulated
- Urea-formaldehyde (UF) condensation products are widely used as slow release nitrogen fertilizers in crops, ornamental plants and grasses.
- Urea- formaldehyde fertilizer materials also can be supplied either as liquids or as solids and are the reaction products of urea and formaldehyde. Such materials generally contain at least 28% nitrogen, largely in an insoluble but slowly available form.
- Extended release UF fertilizers can be prepared by reacting urea and formaldehyde at an elevated temperature in an alkaline solution to produce methylol ureas. The methylol ureas then are acidified to polymerize the methylol ureas to methylene ureas, which increase in chain length as the reaction is allowed to continue.
- the methylene urea polymers that the condensation products normally contain have limited water solubility and thus release nitrogen throughout an extended period.
- the mixture of methylene urea polymers generally have a range of molecular weights and are understood to be degraded slowly by microbial action into water soluble nitrogen.
- UF fertilizers are usually evaluated by the amount and the release characteristics of their water insoluble nitrogen.
- U.S. 4,089,899 describes a solid, controlled release nitrogen fertilizer of the ureaform type, which consists essentially of only two nitrogen fractions: water soluble nitrogen and cold water insoluble nitrogen.
- U.S. 3,677,736 describes a urea-formaldehyde fertilizer suspension.
- Granular nitrogen-containing fertilizers have been produced commercially by a variety of techniques using water soluble nitrogen products, such as urea, potassium nitrate, and ammonium phosphate. The practical advantages of handling, blending, and storing such fertilizer granules are known and well documented. The preparation of granular fertilizers using slow release UF fertilizers also has been described in the prior art.
- the present invention proposes to provide a new source of a particulate slow- release nitrogen (UF) as a plant fertilizer and to use such particles for forming granular fertilizer compositions.
- UF particulate slow- release nitrogen
- Figure 1 is a graph showing the lysimeter results (nitrogen release rate) over a six (6) month time period for the UF polymer powder (particulate) of the present invention as compared with several commercially available sources of nitrogen fertilizers.
- Figure 2 is a photomicrograph of tall fescue seeds having an adherent coating containing slow release nitrogen particles in accordance with the present invention.
- the present invention is directed to a particulate source of slow release nitrogen (urea-formaldehyde (UF or ureaform) polymer particles) that is useful for enhancing the delivery of nitrogen needed for plant development and growth.
- the invention specifically relates to slow release nitrogen (UF) particles and to the use of the particles for enhancing plant development and growth.
- the slow release nitrogen particles of the present invention can be used in a variety of applications, for example they can be adhered to the surface of a seed, or on the surface of an aggregate material, such as sand, using an adhesive binder; they can used in preparing a granular fertilizer; they can be used as a root dip or in a soil drench; or they can be used as a soil additive.
- the slow release nitrogen particles of the invention may have use in animal nutrition and could be used to coat urea, or another animal feed material.
- the slow release nitrogen UF polymer particles of the present invention are prepared by reacting, in an aqueous environment, urea and formaldehyde at a urea: formaldehyde mole ratio of about 1:1.
- Ammonia may be an optional reactant, as will be understood by those skilled in the art, in an amount of up to about 25% by weight of the formed UF polymer, usually in an amount below about 10 % by weight, but in the preferred embodiment of the present invention ammonia is not used at all.
- urea and formaldehyde are reacted in admixture at a mole ratio of approximately 1:1, for example at a UF mol ratio broadly in the range of 0.7: 1 ⁇ U:F ⁇ 1.25: 1 and more preferably in the range of 0.83 : 1 ⁇ U:F ⁇ 1.1 : 1.
- the phase "at a mole ratio of approximately 1:1" is intended to embrace these mole ratio ranges. Particularly good results have been obtained at a U:F mole ratio between 0.95:1 and 1.05:1.
- reaction between urea and formaldehyde is conducted in a manner to produce methylol ureas.
- Methods of doing this are well known to those skilled in the art and any of such known methods can be used.
- reaction between the urea and formaldehyde can be promoted by maintaining the aqueous mixture initially at a moderate alkaline pH, with a pH in the range of about 7 to 9 being suitable and with a pH more usually between about 7.5 and 8.5, to promote the formation of methylol ureas.
- any required pH adjustment may be accomplished using either an acid or a base.
- the initial formation of methyol ureas generally can be conducted at a reaction temperature broadly in the range of 70° F to 175° F (about 20° C to about 80° C), with a reaction temperature in the range of 90° F to 160° F (about 30° C to about 70° C) more usually employed.
- the pH may be adjusted using commonly available acids and bases such as sodium hydroxide (caustic) and sulfuric acid and any material that can alter the pH is suitable for this purpose.
- the reaction pH also may be maintained (buffered) or adjusted by adding such alkaline compounds as triethanolamine, sodium or potassium bicarbonate, sodium or potassium carbonate, or other alkali metal hydroxides, such as potassium hydroxide and lithium hydroxide.
- the methylolation may also be done at a moderate acidic pH, such as in the pH range of 5.0 to 6.0, as will be recognized by those skilled in the art and the present invention is not limited by the way the initial methylolation is conducted.
- a moderate acidic pH such as in the pH range of 5.0 to 6.0
- the nascent UF polymer then is condensed to the point where the polymer becomes insoluble in the aqueous environment.
- This result is preferably accomplished by rapidly acidifying the methylol ureas, to a pH below about 6, preferably below about 5 and usually to a pH below about 4, but above about 1.
- a pH in the range of 2.5 to 4.0 has proven to be suitable. Any organic or inorganic acid that will lower the pH can be used. Particularly suitable is a strong acid, such as a mineral acid and an organic acid such as the stronger carboxylic acids.
- suitable acids include formic acid, acetic acid, nitric acid, phosphoric acid, sulfuric acid and hydrochloric acid.
- the present invention is not limited by the way the further polymerization of the methylol ureas and ultimate insolubilization is conducted and obtained.
- the aqueous mixture of the methylol ureas is preferably mixed in the presence of a dispersing agent during the step of rapid polymerization which leads to insolubilization, such as the rapid acidification step, although it should be possible to get a similar result by maintaining a sufficiently high level of agitation (high shear) during the reaction in the absence of any dispersing agent.
- a dispersing agent during the step of rapid polymerization which leads to insolubilization, such as the rapid acidification step, although it should be possible to get a similar result by maintaining a sufficiently high level of agitation (high shear) during the reaction in the absence of any dispersing agent.
- the resulting dispersion of UF polymer particles formed from the polymerization that occurs, for example, following acidification, can then be used directly (possibly following some thickening, or concentration enrichment), i.e., as a dispersion, to coat seed or sand, to treat roots, as a soil drench or soil additive, or to form a granular fertilizer, or alternately (and preferably) the dispersion of UF polymer particles can be recovered or isolated from the dispersion to produce a UF polymer powder, which then is used in any of the various applications noted above.
- the UF particulates formed in this manner have approximately 36% by weight nitrogen.
- the nitrogen is chemically bound in the UF polymer particulates and thus is agronomically unavailable until microorganisms, principally bacteria, enzymatically (e.g., using urease and nitrogenase) degrade the polymer into a form useable by a growing plant. It is this property that leads to labeling the UF polymer particle "slow release” or "extended release.”
- a small amount of the nitrogen typically on the order of 5% by weight of the particulate, may be of the fast or quick release variety (e.g., principally unreacted urea) and thus may be immediately available to a seed or plant.
- the reaction conditions including the mole ratio of reactants
- the extent of the reaction also can be adjusted such that a higher amount of free urea is present in/with the UF polymer particles, up to about 10% by weight, as a way to deliver more immediately available nitrogen for a quicker initial development or greening effect. Such adjustments are well within the skill of the art in view of the present disclosure.
- Formaldehyde is available in many forms. Paraform (solid, polymerized formaldehyde) and formalin solutions (aqueous solutions of formaldehyde, sometimes with methanol, in 37 percent, 44 percent, or 50 percent formaldehyde concentrations) are commonly used sources of formaldehyde. Formaldehyde also may be available as a gas. Each of these sources of formaldehyde is suitable for use in the preparing the UF polymer of this invention. Generally, for ease of use, formalin solutions are preferred as the formaldehyde source.
- formaldehyde may be replaced with another aldehyde, such as acetaldehyde and/or propylaldehyde that can react with urea.
- Glyoxal may also be used in place of formaldehyde, as may other aldehydes not specifically enumerated.
- Urea also is available in many forms. Solid urea, such as prill, and urea solutions, typically aqueous solutions, are commercially available. Further, urea often is chemically combined with formaldehyde in the form of a urea- formaldehyde concentrate, such as UFC 85, or as a commercially-available solution containing about 25 weight percent urea, about 60 weight percent formaldehyde, and about 15 weight percent water, available under the trademark STA-FORM 60.® Each of these sources of urea can be used in preparing the UF polymer of this invention.
- the urea-formaldehyde condensation reaction that results in the UF polymer particles of this invention is preferably conducted in an aqueous environment. As noted above, the reaction is conducted until the growing urea- formaldehyde polymer becomes insoluble in the aqueous reaction medium.
- a dispersing agent is preferably included in the water to facilitate the production of small polymer particles by the reaction.
- One suitable dispersant is the line of DAXAD dispersants commercially available from Hampshire Chemicals, a subsidiary of the Dow Chemical Company.
- One of the classes of these dispersants is a condensed naphthalene sulfonate. Both the high and low molecular weight species of this product line have been shown to be suitable, such as DAXDAD 19.
- dispersants or surfactants also can be used, including those that might be classified as anionic, such as polyacrylates (also available under the DAXAD label - such as DAXAD 30 from Hampshire Chemicals).
- Nonionic and cationic dispersant compounds also can be used. Suitable alternative materials can be identified using routine experimentation. The nature of the specific dispersant/surfactant is not critical. Another example would be a lignosulfonate salt or lignin. It is also possible to dispense with the use of any dispersant, provided that the reaction medium is sufficiently agitated (high shear) during the UF condensation reaction to promote the formation of small polymer particles.
- the amount of dispersant to include in the aqueous solution of methylol urea at the time of the insolubilization reaction can be readily determined by those skilled in the art. The amount depends to some extent on the particular dispersant chosen to use and the concentration of methylol urea in the aqueous reaction medium. Generally, the urea and formaldehyde reactants and the water vehicle are provided in amounts to yield a methylol urea concentration that ultimately provides a dispersion of UF polymer particles at about a 20% by weight solid concentration up to about 60% by weight solids. More usually, the materials are provided so that the UF polymer dispersion is between about 30% and 55% by weight solids.
- the dispersion of UF polymer particles is prepared at about a 40% by weight solids concentration.
- the dispersing agent is generally supplied at a concentration of between about 0.1% and 5% by weight, and usually in at least about 0.5% by weight up to about 2% by weight.
- the particle size of the UF polymer particulate material may vary fairly widely. In general, a particular size is dictated by the specific application for which the particle is too be used. In some applications, such as when used as a soil additive, the particle size is less critical than when it may be used for example in a seed coating where is likely would be desirable to have a particle size smaller than the seed itself and usually substantially smaller than the seed. Producing small UF particles helps one better obtain a necessary and desired degree of adhesion of the UF particles in such applications. By using the preferred method of making the UF polymer in the presence of a dispersant, it is easy to produce most of the UF particles sufficiently small so as to pass through a 100 mesh (U.S.
- UF polymer particles will be smaller than about 150 microns and a large number of them may be smaller than about 75 microns. While there is virtually no lower limit to the UF polymer particle size for practicing the invention; as a practical matter, most particles will be larger than one micron. Most of the particles, prepared using the procedures and materials noted above, have a particle size in the range of 10 to 80 microns, with a number average particle size between about 25 and 35 microns. A number average particle size of about 30 microns is quite common.
- the aqueous dispersion of UF polymer particles can be used directly for the wide variety of available applications, such as coating seeds or coating sand, or the solid UF particles can be isolated from the dispersion before use. In some cases, it may be easier and more cost effective to use the dispersion directly. However, if there is a desire to isolate the particles, and that may be preferred in some applications, then according to the broadest aspects of the invention, any way for isolating the UF polymer particles from the aqueous UF polymer dispersion can be used. For example, the UF polymer particles in the dispersion may be isolated by filtration and oven drying, or by thin film evaporation. When using these latter techniques, it may then be necessary to reduce the particle size of the recovered solids, for example by grinding, to obtain a desired particle size or size distribution for a specific application.
- spray dryer and “spray drying” refer to the technically sophisticated process of atomizing (in the form of finely divided droplets) the UF dispersion or slurry into a gas stream (often a heated air stream) under controlled temperature conditions and under specific gas/liquid contacting conditions to effect evaporation of water from the atomized droplets and production of a dry particulate solid product.
- Spray drying as used herein is typically carried out with pressure nozzles (nozzle atomization) or centrifugal atomizers operating at high speeds (e.g., a spinning disc).
- nozzle atomization nozzle atomization
- centrifugal atomizers operating at high speeds
- a spray dryer is designed so that the droplets do not contact the spray dryer wall under proper operating procedures. This effect is achieved by a precise balance of atomizer velocity, air flow, spray dryer dimensions of height and diameter, and inlet and outlet means to produce a cyclonic flow of gas, e.g., air in the chamber.
- a pulse atomizer also can be used to produce the small droplets needed to facilitate evaporation of the water.
- a flow promoter such as an aluminosilicate material
- a flow promoter such as an aluminosilicate material
- UF polymer solid particles In addition to the slow release nitrogen, UF polymer solid particles, a variety of other additives, including other agriculturally acceptable particulate materials, may also be combined with the UF polymer particles in the variety of potential applications. Some materials may exhibit a high degree of water solubility, and thus may be mixed with the UF polymer dispersion before its use. In fact, in some cases one may be able to mix such materials, especially the water soluble materials, with the UF polymer dispersion prior to spray- drying.
- materials that can be used in combination with the UF polymer particles are materials commonly used in fertilizer applications that are not toxic to seeds, or harmful to the soil environment in which seeds are planted, or in which a plant is growing.
- Such materials may include calcium carbonate (agricultural lime) in its various forms for adding weight and/or raising the pH of acid soils; metal containing compounds and minerals such as gypsum, metal silicates and chelates of various micronutrient metals such as iron, zinc and manganese; talc; elemental sulfur; activated carbon, which may act as a "safener” to protect against potentially harmful chemicals in the soil; pesticides, herbicides and fungicides to combat or prevent undesired insects, weeds and disease, super absorbent polymers, wicking agents, wetting agents, plant stimulants to accelerate growth, an inorganic (N-P-K) type fertilizer, sources of phosphorus, sources of potassium, and organic fertilizers, such as urea as a way to deliver more immediately available nitrogen for
- the UF polymer particles can be used to coat seeds or other solid aggregates using an adhesive.
- the nature of the adhesive binder is not narrowly critical. Any non-toxic, biocompatible adhesive material should be suitable.
- adhesive classes which can potentially be used as the adhesive binder in the various applications include, but are not limited to, animal hide glues, celluloses including ethyl celluloses, methyl celluloses, hydroxymethyl celluloses, hydroxypropyl celluloses, hydroxymethyl propyl celluloses, carboxy methyl celluloses, polyvinyl alcohols and polyvinyl alcohol copolymers, dextrins, malto-dextrins, alginates, sugars, molasses, polyvinyl pyrrolidones, polyvinyl acetates and polyvinyl acetate copolymers, polysaccharides, fats, oils, proteins, gum arabics, shellacs, vinylidene chlorides, vinylidene chloride copolymers, lignosulfonates, starches, acrylate polymers and copolymers, such as polyvinyl acrylates, zeins, gelatins, chitosan,
- the UF polymer particles are used to prepare a composite fertilizer as granular particles.
- Granular particles can be prepared by commingling the UF polymer particles with one or more fertilizer enhancing solids.
- the fertilizer enhancing solids preferably contain a source of phosphorus and a source of potassium.
- the source of potassium may be potash (potassium chloride) or its sulfates, which are available commercially, such as the sulfate of potash (“SOP”) or the sulfate of potash- magnesia ("SPM").
- the source of phosphorus may be monoammonium phosphate ("MAP"), diammonium phosphate ("DAP”), or triple super phosphate (“TSP”), all of which are generally available from commercial sources.
- MAP monoammonium phosphate
- DAP diammonium phosphate
- TSP triple super phosphate
- the amounts of nitrogen, phosphorus, and potassium included in the final fertilizer granules is not critical and typically will range from 0% to about 60% for each component. Most preferably, between about 1-100% slow-release nitrogen, 0-60% of a potassium source, and 0-60% of a phosphorus source are included in the final fertilizer granules.
- the fertilizer enhancing solids also preferably include other fertilizer components and/or nutrients (including materials previously identified) such as iron, manganese, calcium, micronutrients, and the like.
- additional components such as iron, manganese, calcium, micronutrients, and the like.
- the forms and sources of these additional components are known to persons skilled in the art, and the appropriate amounts may be selected to include in the fertilizer granules without undue experimentation.
- U.S. 5,797,976 which provides an extensive list of fertilizer enhancing solids for enhancing the growth and development of plants, is herein incorporated by reference in its entirety for its disclosure.
- the UF polymer particles are combined with one or more of the fertilizer enhancing solids and a binder and then mixed to granulate the ingredients into more or less homogeneous granules.
- plain water can be used as the binder simply by moistening the dry components to accomplish granulation.
- the water may be provided at ambient temperature, or it may be heated to provide additional energy for the granulation process. In some cases it may be preferred to provide the water as steam.
- the dry fertilizer ingredients including the UF polymer particles, are combined and are mixed until a well-mixed blend of the ingredients is obtained.
- Fertilizer enhancing solids of an appropriate size for granulation may be purchased from commercial sources, or they may be obtained by crushing or milling larger sized particles and screening for size.
- the dry ingredients can be blended by tumbling in a rotary mixer, although other methods of mixing may be used. For example, mixing in a paddle mixer or in a ribbon or other type of batch mixer may be preferred in certain cases.
- a binder is added to the mixture of particles, for example as noted above, the particles can simply be moistened, and then are further mixed to begin the granulation process.
- a granulator that subjects the particles to a rolling action during the granulation.
- rolling-type granulators include dish-type granulators, drum-type granulators, or stirring-type (agitation-type) granulators in which stirring vanes or paddles rotate in a vessel.
- the blended particles can be moistened by spraying them with steam to heat the particles simultaneously during the moistening.
- the blended particles may be moistened with plain water, which may be sprayed onto the blend of particles.
- a solution of an adhesive such as a methylol urea solution, or a solution of one of the earlier identified agriculturally acceptable adhesives, is used as the binder (moisturizer). Any of these binders may be used alone, or in combination with others. Regardless of whether steam, water, or another binder is used, the moistening with the binder and the mixing preferably takes place in a tumbler or other mixer granulator so that the particles are evenly moistened.
- the amount of binder/moisture added to the granules should be controlled; too little or too much binder being detrimental to final granule integrity.
- the temperature during granulation in not narrowly critical.
- the dry ingredients are mixed with binder until homogeneous particles of fertilizer granules, i.e., granules that contain most, if not all, of the fertilizer components, are obtained.
- the fertilizer granules contain, in addition to the UF polymer particles of the present invention, a source of phosphorus, and a source of potassium.
- a source of phosphorus i.e., a source of phosphorus
- potassium a source of potassium
- the desired particle size of the granules is generally dictated by the particular application of the resulting fertilizer. Granule particle sizes in the range of 20 mils to 250 mils (about 0.5 to about 6.0 mm) are typical. To obtain granules having a smaller particle size, one would typically initiate the granulation process using powder ingredients having a finer particle size. Particle size is controlled by properly adjusting the amount of binder and the rate of binder addition, the operating conditions of the granulator and the granulation time.
- the granules may be fed into a dryer to facilitate final production and recovery of the granulated fertilizer.
- a dryer For example, one might employ a rotating drum dryer with a drying zone temperature between 100° and 250° F (about 40° to about 120° C), usually between about 185° F and 200° F (between 85° C and about 95° C).
- the material is cooled to ambient temperature, and then is passed to a screening apparatus to separate granules meeting desired size specifications. Oversize granules and fines can be recycled to the granulation step, with oversize granules first being milled or crushed. Appropriately sized granules are recovered as the granulated fertilizer product.
- the amount of UF polymer particles of the invention used in any particular application may vary fairly widely, but will usually depend on the particular application and its need for nitrogen fertilization, as well as the optional presence of other particulates and solids besides the essential UF polymer particles of the present invention.
- the UF polymer particles of present invention, and the related fertilizer granules are useful for fertilizing a wide variety of seeds and plants, including seeds used to grow crops for human consumption, for silage, or for other agricultural uses. Indeed, virtually any seed or plant can be treated in accordance with the present invention using UF polymer particles of the present invention, such as cereals, vegetables, ornamentals, conifers, coffee, turf grasses, forages and fruits, including citrus.
- Plants that can be treated include grains such as barley, oats and corn, sunflower, sugar beets, rape, safflower, flax, canary grass, tomatoes, cotton seed, peanuts, soybean, wheat, rice, alfalfa, sorghum, bean, sugar cane, broccoli, cabbage and carrot.
- a urea-formaldehyde (UF) dispersion suitable for producing UF polymer particles of the present invention, is prepared as follows. Water (32.3 parts by weight) and a 50% aqueous solution of formaldehyde (31.8 parts by weight) are added to a reaction vessel equipped with vacuum reflux, a heater and a mixer. While adjusting the temperature of the agitated aqueous mixture to 100° F, its pH is also adjusted to about 7.0 (6.8 to 7.2) using either 50% caustic (NaOH), or 35% sulfuric acid, as needed. Once the aqueous mixture has been heated to 100° F (about 38° C), 31.8 parts by weight of prilled urea also is added and mixing is continued.
- the temperature of the agitated aqueous mixture then is increased to 120° F (about 50° C) and held for a time (usually about 15 minutes) sufficient to dissolve the urea. While maintaining the temperature of the agitated mixture at 120° F (about 50° C), the pH is adjusted to within the range of 8.0 to 8.4, again using either 50% caustic (NaOH), or 35% sulfuric acid as needed. Using, as appropriate, a combination of the reaction exotherm and external heating, the reaction mixture is heated to a temperature of 158° F and the temperature is controlled using vacuum reflux. The pH of the mixture is adjusted, as needed, to about 7.8 to 8.2, using either 50%) caustic (NaOH), or 35% sulfuric acid.
- the agitated mixture is held at a temperature of about 158° F (70° C) for about 30 minutes and the pH continues to be adjusted, as needed, to about 7.8 to 8.2, using either 50% caustic (NaOH), or 35% sulfuric acid so that the reactants form methylol ureas.
- the aqueous mixture is cooled to about 105° F (about 40° C) and a dispersant (one part by weight of DAXAD 19) is added while the batch is cooled.
- a dispersant one part by weight of DAXAD 19
- the pH of the aqueous mixture is adjusted, as quickly as possible, to a pH of about 3.3 to 3.5, using 35% sulfuric acid, at which point the batch may exotherm to a temperature of above 175° F (about 80° C) before the exotherm subsides. This procedure causes rapid condensation of the methylol ureas to a solid network polymer.
- the temperature of the aqueous mixture is cooled to 105° F (about 40° C) as quickly as possible while it is held for 20 minutes.
- the pH of the aqueous mixture is adjusted to 6.5 to 7.5, using either 50% caustic (NaOH), or 35% sulfuric acid, as needed, and then is discharged to storage.
- the UF polymer dispersion at about 38 weight percent solids should be agitated during its storage.
- the dispersion made in accordance with Example 1 can then be spray dried to produce UF polymer particles.
- a Niro P6 spray dryer can be fed with 15 pounds per hour of the dispersion of Example 1.
- the spray dryer receives an inlet gas stream at a flow rate of about 415 standard cubic feet per minute and a temperature of 330- 340° F (165-170° C).
- the outlet temperature of the spray dryer was measured as 75-95° F (25-35° C).
- the recovered UF polymer particle product (at about 1 wt. % moisture) had particle sizes distributed from 10 to 80 microns, with a number average size of 30 microns.
- the sprayed dried UF powder product of Example 3 was tested in an incubation lysimeter, a procedure developed by Dr. Jerry Sartain of the University of Florida.
- An individual lysimeter is simply a 12 inch long piece of 3" diameter PVC piping.
- the pipe has a permanent cap on the bottom and a removable cap on the top.
- the bottom cap has an opening where water can drain and vacuum can be applied to remove excess water.
- a sand-soil mixture is prepared by mixing ninety-five (95) parts sand and five (5) parts topsoil.
- An amount of the sand-topsoil mixture sufficient to fill the column then is mixed thoroughly with an amount of each of the fertilizers to be tested sufficient to provide 450 mg of nitrogen in the column. After filling the lysimeter column, enough water is added to moisten the column contents. The column then is ready for the start of the testing. Once a month, 500 milliliters of 0.01 M citric acid is added to the column, allowed to flow downwardly through the column, and is collected from the bottom drain. Any excess water (citric acid) is removed from the column using a vacuum and combined with the amount collected from the drain. The collected liquid is analyzed for nitrogen (nitrate and ammonia) content. The amount of nitrogen (nitrate and ammonia) eluted from the column each month is determined.
Abstract
Description
Claims
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03728259.7A EP1487761B1 (en) | 2002-03-26 | 2003-03-26 | Method for producing a particulate urea-formaldehyde polymer as slow release nitrogen fertilizer |
KR1020047014895A KR101002884B1 (en) | 2002-03-26 | 2003-03-26 | Slow Release Nitrogen Fertilizer |
MXPA04009282A MXPA04009282A (en) | 2002-03-26 | 2003-03-26 | Slow release nitrogen fertilizer. |
BRPI0308607-0B1A BR0308607B1 (en) | 2002-03-26 | 2003-03-26 | method of producing a particulate urea formaldehyde polymer |
JP2003579560A JP4430945B2 (en) | 2002-03-26 | 2003-03-26 | Controlled release nitrogen fertilizer |
AU2003233412A AU2003233412B2 (en) | 2002-03-26 | 2003-03-26 | Slow release nitrogen fertilizer |
ES03728259.7T ES2450130T3 (en) | 2002-03-26 | 2003-03-26 | Process for the production of a particulate urea-formaldehyde polymer as a slow-release nitrogen fertilizer |
CA2479614A CA2479614C (en) | 2002-03-26 | 2003-03-26 | Slow release nitrogen fertilizer |
HK06100290.1A HK1080446B (en) | 2002-03-26 | 2006-01-06 | Slow release nitrogen fertilizer |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US36727802P | 2002-03-26 | 2002-03-26 | |
US60/367,278 | 2002-03-26 | ||
US37940202P | 2002-05-13 | 2002-05-13 | |
US60/379,402 | 2002-05-13 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2003082005A2 true WO2003082005A2 (en) | 2003-10-09 |
WO2003082005A3 WO2003082005A3 (en) | 2003-12-24 |
Family
ID=28678183
Family Applications (4)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2003/008453 WO2003082775A1 (en) | 2002-03-26 | 2003-03-26 | Slow release nitrogen root treatment |
PCT/US2003/007800 WO2003082003A2 (en) | 2002-03-26 | 2003-03-26 | Slow release nitrogen coating |
PCT/US2003/008454 WO2003082005A2 (en) | 2002-03-26 | 2003-03-26 | Slow release nitrogen fertilizer |
PCT/US2003/008452 WO2003082004A2 (en) | 2002-03-26 | 2003-03-26 | Slow release nitrogen seed coat |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2003/008453 WO2003082775A1 (en) | 2002-03-26 | 2003-03-26 | Slow release nitrogen root treatment |
PCT/US2003/007800 WO2003082003A2 (en) | 2002-03-26 | 2003-03-26 | Slow release nitrogen coating |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2003/008452 WO2003082004A2 (en) | 2002-03-26 | 2003-03-26 | Slow release nitrogen seed coat |
Country Status (12)
Country | Link |
---|---|
US (4) | US6900162B2 (en) |
EP (3) | EP1487254B1 (en) |
JP (2) | JP4430945B2 (en) |
KR (2) | KR101002884B1 (en) |
CN (1) | CN1309685C (en) |
AU (4) | AU2003233412B2 (en) |
BR (2) | BR0308607B1 (en) |
CA (2) | CA2480173C (en) |
ES (1) | ES2450130T3 (en) |
HK (1) | HK1080446B (en) |
MX (2) | MXPA04009230A (en) |
WO (4) | WO2003082775A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7753984B2 (en) | 2005-04-07 | 2010-07-13 | Yaqing Liu | Slow and controlled-release polymeric fertilizer with multiple nutrients, preparing process for the same and the use method of the same |
US8419819B2 (en) * | 2006-06-23 | 2013-04-16 | Koch Agronomic Services, Llc | Solid urea fertilizer |
US8562711B2 (en) | 2006-01-12 | 2013-10-22 | Koch Agronomic Services, Llc | Additive containing N-(n-butyl)thiophsphoric triamide for urea-based fertilizer |
EP2747557A4 (en) * | 2011-08-25 | 2015-05-13 | Dow Agrosciences Llc | Pesticidal compositions with enhanced active ingredient retention in pest control zones |
US9034072B2 (en) | 2012-08-15 | 2015-05-19 | Koch Agronomic Services, Llc | Compositions of substantially spherical particles and methods of making thereof |
US9682894B2 (en) | 2012-08-15 | 2017-06-20 | Koch Agronomic Services, Llc | Compositions of urea formaldehyde particles and methods of making thereof |
Families Citing this family (134)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6039059A (en) * | 1996-09-30 | 2000-03-21 | Verteq, Inc. | Wafer cleaning system |
US20070280981A1 (en) * | 2006-06-02 | 2007-12-06 | The Andersons, Inc. | Adherent biologically active ingredient carrier granule |
KR101002884B1 (en) * | 2002-03-26 | 2010-12-21 | 조지아-퍼시픽 케미칼즈 엘엘씨 | Slow Release Nitrogen Fertilizer |
JP3860073B2 (en) * | 2002-05-27 | 2006-12-20 | サッポロビール株式会社 | Appropriateness determination method of raw barley as raw material for malt production by dyeing method |
JP2005325024A (en) * | 2002-08-02 | 2005-11-24 | Maruo Calcium Co Ltd | Flower-picking agent |
CA2529222A1 (en) * | 2003-06-27 | 2005-01-06 | Melspring International B.V. | Process for the production of a fertilizer and fertilizer |
FR2874008B1 (en) * | 2004-08-06 | 2007-02-23 | Snf Sas Soc Par Actions Simpli | FERTILIZER PELLETS AND METHOD OF MANUFACTURE |
CA2587971C (en) * | 2004-11-30 | 2013-04-09 | Victor Chow | Process and composition for coating propagation material |
US7534280B2 (en) * | 2005-04-25 | 2009-05-19 | The Davey Tree Expert Company | Fertilizers containing polyamino acid |
US20060236734A1 (en) * | 2005-04-25 | 2006-10-26 | The Davey Tree Expert Company | Fertilizers containing polyamino acid |
US7686215B2 (en) * | 2005-05-21 | 2010-03-30 | Apple Inc. | Techniques and systems for supporting podcasting |
DE102005028016A1 (en) | 2005-06-16 | 2006-12-21 | Uhde Gmbh | Coated controlled release fertilizer and process for its production |
MX2008002264A (en) * | 2005-08-18 | 2008-11-19 | Regal Chemical Company | Slow-release fertilizer and method of making and using same. |
WO2007030557A2 (en) * | 2005-09-08 | 2007-03-15 | Cornell Research Foundation, Inc. | Formulations of viable microorganisms and their methods of production and use |
US9102893B2 (en) * | 2005-09-08 | 2015-08-11 | Advanced Biological Marketing | Equipment lubricating microbial compositions |
ITMI20051892A1 (en) * | 2005-10-07 | 2007-04-08 | Sadepan Chimica S R L | METHOD FOR THE PREPARATION OF GRANULAR ORGANIC-MINERAL FERTILIZERS WITH NITROGEN, SLOW CESSION, HIGH FREQUENCY AND MINIMUM ENVIRONMENTAL IMPACT |
JPWO2007083445A1 (en) * | 2006-01-17 | 2009-06-11 | 蔵 山田 | Plant growth promotion and quality improvement method, and growth promoter and quality improvement agent used in the method |
US20070207927A1 (en) * | 2006-03-01 | 2007-09-06 | Rosa Fred C | Polymer based seed coating |
US8642507B1 (en) | 2006-08-14 | 2014-02-04 | The United States Of America As Represented By The Secretary Of Agriculture | Fertilizer formulation for reduction of nutrient and pesticide leaching |
WO2008040636A2 (en) * | 2006-09-29 | 2008-04-10 | Basf Se | Process for the continuous granulation of fertilizers |
US7862642B2 (en) * | 2006-12-14 | 2011-01-04 | Georgia-Pacific Chemicals Llc | Extended-release urea-based granular fertilizer |
US20080196463A1 (en) * | 2007-02-21 | 2008-08-21 | Hudson Alice P | Precursor coatings for sulfur coated controlled release fertilizers |
US7753618B2 (en) | 2007-06-28 | 2010-07-13 | Calera Corporation | Rocks and aggregate, and methods of making and using the same |
EA200901629A1 (en) | 2007-06-28 | 2010-06-30 | Калера Корпорейшн | METHODS AND DESCRIPTION SYSTEMS INCLUDING THE DECOMPOSITION OF CARBONATE COMPOUNDS |
US8202343B2 (en) | 2007-11-13 | 2012-06-19 | Board Of Trustees Of Michigan State University | Sand based fungicides |
US9549499B2 (en) | 2007-11-13 | 2017-01-24 | Board Of Trustees Of Michigan State University | Solid carrier sprayer apparatus and methods of using same |
US20170137703A1 (en) | 2007-12-11 | 2017-05-18 | Superior Silica Sands, LLC | Hydraulic fracture composition and method |
US7726070B2 (en) * | 2007-12-11 | 2010-06-01 | Thrash Tommy K | Hydration maintenance apparatus and method |
US9057014B2 (en) | 2007-12-11 | 2015-06-16 | Aquasmart Enterprises, Llc | Hydraulic fracture composition and method |
US9856415B1 (en) | 2007-12-11 | 2018-01-02 | Superior Silica Sands, LLC | Hydraulic fracture composition and method |
US10920494B2 (en) | 2007-12-11 | 2021-02-16 | Aquasmart Enterprises, Llc | Hydraulic fracture composition and method |
US20100239467A1 (en) | 2008-06-17 | 2010-09-23 | Brent Constantz | Methods and systems for utilizing waste sources of metal oxides |
US7749476B2 (en) | 2007-12-28 | 2010-07-06 | Calera Corporation | Production of carbonate-containing compositions from material comprising metal silicates |
BRPI0821515A2 (en) | 2007-12-28 | 2019-09-24 | Calera Corp | co2 capture methods |
US7754169B2 (en) | 2007-12-28 | 2010-07-13 | Calera Corporation | Methods and systems for utilizing waste sources of metal oxides |
JP4950953B2 (en) * | 2008-07-02 | 2012-06-13 | 財団法人日本植物調節剤研究協会 | Crop cultivation method with reduced inhibition of germination growth inhibition by chemical substances |
WO2010006233A2 (en) * | 2008-07-11 | 2010-01-14 | Floratine Biosciences, Inc. | Foliarly applicable silicon nutrition compositions & methods |
US7993500B2 (en) | 2008-07-16 | 2011-08-09 | Calera Corporation | Gas diffusion anode and CO2 cathode electrolyte system |
US7771505B2 (en) * | 2008-07-16 | 2010-08-10 | Agrium Inc. | Controlled release fertilizer composition |
CN104722466A (en) * | 2008-07-16 | 2015-06-24 | 卡勒拉公司 | Low-energy 4-cell Electrochemical System With Carbon Dioxide Gas |
WO2010009273A1 (en) | 2008-07-16 | 2010-01-21 | Calera Corporation | Co2 utilization in electrochemical systems |
EP2338136A1 (en) | 2008-09-11 | 2011-06-29 | Calera Corporation | Co2 commodity trading system and method |
US7815880B2 (en) | 2008-09-30 | 2010-10-19 | Calera Corporation | Reduced-carbon footprint concrete compositions |
US7939336B2 (en) | 2008-09-30 | 2011-05-10 | Calera Corporation | Compositions and methods using substances containing carbon |
TW201026597A (en) | 2008-09-30 | 2010-07-16 | Calera Corp | CO2-sequestering formed building materials |
US8869477B2 (en) | 2008-09-30 | 2014-10-28 | Calera Corporation | Formed building materials |
CN101925391A (en) * | 2008-10-31 | 2010-12-22 | 卡勒拉公司 | Non-cementitious compositions comprising CO2 sequestering additives |
US9133581B2 (en) | 2008-10-31 | 2015-09-15 | Calera Corporation | Non-cementitious compositions comprising vaterite and methods thereof |
KR101221061B1 (en) | 2008-11-14 | 2013-01-11 | 한국농수산대학 산학협력단 | Silicate, iron powder and calcium gypsum coated seed |
EA201100807A1 (en) * | 2008-12-19 | 2012-02-28 | Пастеуриа Байосаенс, Инк. | MATERIALS AND METHODS OF STRUGGLE AGAINST NEMATODIS WITH THE HELP OF PASTEURIA DISPUTE IN SEED COVERINGS |
US8652490B2 (en) | 2009-01-26 | 2014-02-18 | Pasteuria Bioscience, Inc. | Pasteuria strain |
US8834688B2 (en) | 2009-02-10 | 2014-09-16 | Calera Corporation | Low-voltage alkaline production using hydrogen and electrocatalytic electrodes |
WO2010101953A1 (en) | 2009-03-02 | 2010-09-10 | Calera Corporation | Gas stream multi-pollutants control systems and methods |
EP2247366A4 (en) | 2009-03-10 | 2011-04-20 | Calera Corp | Systems and methods for processing co2 |
AU2010230024B2 (en) * | 2009-03-23 | 2015-09-10 | Brigham Young University | Seed coating compositions and methods for applying soil surfactants to water-repellent soil |
US7993511B2 (en) | 2009-07-15 | 2011-08-09 | Calera Corporation | Electrochemical production of an alkaline solution using CO2 |
CN101993268B (en) * | 2009-08-25 | 2012-11-28 | 史丹利化肥股份有限公司 | Selenium urea formaldehyde roller pelleting compound fertilizer and production method thereof |
US8466087B2 (en) | 2009-09-03 | 2013-06-18 | Fbsciences Holdings, Inc. | Seed treatment compositions and methods |
BR112012007613A2 (en) * | 2009-09-28 | 2017-06-20 | Fbsciences Holdings Inc | fertilizer compositions and methods |
EP2482638A4 (en) * | 2009-09-28 | 2013-08-07 | Fbsciences Holdings Inc | Methods of reducing plant stress |
WO2011071909A1 (en) * | 2009-12-07 | 2011-06-16 | Momentum Tchnologies, Inc. | Nutrient yielding bio-renewable controlled release fertilizer coatings |
RU2457666C2 (en) * | 2010-01-11 | 2012-08-10 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Казанский государственный аграрный университет" | Method of cultivation of fodder crops and controlled-release nitrogen fertiliser to its implementation |
CN102711482A (en) * | 2010-01-26 | 2012-10-03 | 独立行政法人农业·食品产业技术综合研究机构 | Agent for improving plant growth, seeds, and method for improving plant growth |
CN102985393B (en) | 2010-06-07 | 2014-12-10 | 斯里兰卡纳米科技协会(私人)有限公司 | A cellulose based sustained release macronutrient composition for fertilizer application |
CA2805115A1 (en) | 2010-07-15 | 2012-01-19 | Fbsciences Holdings, Inc. | Microorganism compositions and methods |
BR112013011263A2 (en) | 2010-11-09 | 2016-08-16 | Pasteuria Bioscience Inc | "nematicidal composition, and method for controlling nematodes" |
CN102557838A (en) * | 2010-12-30 | 2012-07-11 | 中国科学院沈阳应用生态研究所 | Multi-functional slow-release urea fertilizer and preparation method |
JP5678755B2 (en) * | 2011-03-23 | 2015-03-04 | Jfeスチール株式会社 | Iron powder for seed coating, iron powder coated seed |
CN102153392B (en) * | 2011-04-08 | 2014-04-23 | 山东聊城鲁西化工第五化肥有限公司 | Production method of novel slow release urea-formaldehyde compound fertilizer |
GB201106748D0 (en) * | 2011-04-20 | 2011-06-01 | Exosect Ltd | Coating compositions for pathogen control in cotton |
US20130243839A1 (en) * | 2011-08-08 | 2013-09-19 | Landec Corporation | Controlled, Sustained Release Particles for Treating Seeds and Plants and Methods for Making the Particles |
EP2741608A4 (en) * | 2011-08-09 | 2015-04-22 | Univ Putra Malaysia | An improved plant treatment agent |
US8682584B2 (en) * | 2011-08-19 | 2014-03-25 | Brookside Laboratories, Inc. | Nitrogen potential index |
WO2013040392A2 (en) * | 2011-09-14 | 2013-03-21 | Wisearth Ip, Inc | Pelletized organic fertilizer |
AU2012352161B2 (en) | 2011-12-13 | 2016-05-19 | Monsanto Technology Llc | Plant growth-promoting microbes and uses therefor |
BR112014017162A8 (en) | 2012-01-12 | 2017-07-04 | Fbsciences Holdings Inc | plant biology modulation |
WO2013133819A1 (en) | 2012-03-07 | 2013-09-12 | Empire Technology Development Llc | Lignin-based multipurpose fertilizers |
US9115307B2 (en) | 2012-03-31 | 2015-08-25 | The Andersons, Inc. | Soil adherent pellet and active agent delivery with same |
CN102653503B (en) * | 2012-05-18 | 2013-07-10 | 成都市新都化工股份有限公司 | Double-envelope composite fertilizer production method |
US9353019B2 (en) | 2013-01-18 | 2016-05-31 | Oms Investments, Inc. | Coated seeds |
CN103102220A (en) * | 2013-02-04 | 2013-05-15 | 桂林菲科特生物科技有限公司 | High-energy peptide urea |
CA2808647C (en) * | 2013-03-08 | 2014-08-26 | Biochambers Incorporated | A controlled environment enclosure with built-in sterilization/pasteurization functionality |
US9169164B2 (en) * | 2013-04-05 | 2015-10-27 | Ecolab Usa Inc. | Polymers useful in agricultural applications |
CA3209979A1 (en) | 2013-09-04 | 2015-03-12 | Indigo Ag, Inc. | Agricultural endophyte-plant compositions, and methods of use |
WO2015076382A1 (en) * | 2013-11-21 | 2015-05-28 | 横浜ゴム株式会社 | Pneumatic tire |
CN106458779B (en) | 2014-01-31 | 2020-12-11 | 沙地基本工业公司 | Fertilizer coating comprising one or more cores and method for making same |
JP6735235B2 (en) | 2014-05-05 | 2020-08-05 | サビック グローバル テクノロジーズ ベスローテン フエンノートシャップ | Coated granular fertilizer, its manufacturing method and use |
CN103980070B (en) * | 2014-05-10 | 2016-04-06 | 青岛乡润生物科技有限公司 | A kind of Synergistic type peanut Slow release special fertilizer |
CN104045486B (en) * | 2014-05-28 | 2016-03-02 | 马鞍山市心洲葡萄专业合作社 | One grow wheat specific complex coated fertilizer and preparation method thereof |
CN106659116A (en) * | 2014-07-25 | 2017-05-10 | 住友化学株式会社 | Coated rice seed and method for producing same |
KR102409814B1 (en) * | 2014-07-25 | 2022-06-15 | 스미또모 가가꾸 가부시끼가이샤 | Coated rice seed and method for producing same |
US10501383B2 (en) | 2014-10-31 | 2019-12-10 | Koch Agronomic Services, Llc | Nitrification inhibitor compositions and methods of making thereof |
CN104557286A (en) * | 2014-12-24 | 2015-04-29 | 中国科学院沈阳应用生态研究所 | Efficient compound organic acid-based stable ecological fertilizer |
US20160185682A1 (en) * | 2014-12-31 | 2016-06-30 | Dow Agrosciences Llc | Nitrification inhibitor compositions and methods for preparing the same |
AU2016219488A1 (en) | 2015-02-09 | 2017-09-14 | Bioconsortia, Inc. | Agriculturally beneficial microbes, microbial compositions, and consortia |
EP3095770A1 (en) * | 2015-05-21 | 2016-11-23 | Casale SA | Process for the production of combined fertilizers |
US20180171228A1 (en) * | 2015-06-26 | 2018-06-21 | Dow Global Technologies Llc | Application of aqueous sulfonated aromatic polymer for enhanced water retention |
US10689306B2 (en) | 2015-07-20 | 2020-06-23 | Sabic Global Technologies B.V. | Fertilizer composition and methods of making and using same |
CA2993131A1 (en) | 2015-07-20 | 2017-01-26 | Sabic Global Technologies B.V. | An extruded fertilizer core particle comprising a urease inhibitor and/or a nitrification inhibitor and a binder therefor |
MX2018000780A (en) | 2015-07-25 | 2018-03-23 | Bioconsortia Inc | Agriculturally beneficial microbes, microbial compositions, and consortia. |
EP3377461A4 (en) | 2015-11-16 | 2019-07-10 | SABIC Global Technologies B.V. | Coated granular fertilizers, methods of manufacture thereof, and uses thereof |
BR112018009872B1 (en) | 2015-11-16 | 2022-11-16 | Sabic Global Technologies B.V. | MANUFACTURING PROCESS OF A COATED FERTILIZER |
CN105594501A (en) * | 2015-11-19 | 2016-05-25 | 宁夏中青农业科技有限公司 | Urea resin foam particle matrix and processing method thereof |
CN105359902B (en) * | 2015-12-16 | 2017-12-19 | 孟祥荣 | A kind of seedbed method for culturing seedlings of early rice |
WO2017137902A1 (en) | 2016-02-08 | 2017-08-17 | Sabic Global Technologies B.V. | Method of making a fertilizer seed core |
EP3472122B1 (en) * | 2016-06-18 | 2022-03-09 | Milliken & Company | Compositions suitable for use in making fertilizers, methods for making such compositions, and method for making fertilizers using the same |
CN106146151B (en) * | 2016-06-30 | 2018-02-06 | 吉林贝盈生物科技有限公司 | Granulated fertilizer additive and preparation method thereof, granulated fertilizer additive powder and granulated fertilizer |
US20180177192A1 (en) * | 2016-12-27 | 2018-06-28 | Talc Usa, Llc | Seed Treatment Composition |
BR112019014982A2 (en) * | 2017-01-20 | 2020-04-28 | Koch Agronomic Services Llc | Fertilizer compositions containing acid-resistant urease inhibitor adduct |
WO2018193358A1 (en) | 2017-04-19 | 2018-10-25 | Sabic Global Technologies B.V. | Enhanced efficiency fertilizer with urease inhibitor and nitrification inhibitor in separate particles |
US11306037B2 (en) | 2017-04-19 | 2022-04-19 | Sabic Global Technologies B.V. | Enhanced efficiency fertilizer with urease inhibitor and nitrification separated within the same particle |
WO2018193345A1 (en) | 2017-04-20 | 2018-10-25 | Sabic Global Technologies B.V. | Enhanced efficiency fertilizer with embedded powder composition |
CN111148827A (en) | 2017-05-09 | 2020-05-12 | 塔克森生物科学公司 | Microorganism, composition and use for promoting plant growth |
CN107176890A (en) * | 2017-05-15 | 2017-09-19 | 覃广强 | A kind of rich manganese slow-release compound fertilizer |
US11447431B1 (en) | 2017-06-14 | 2022-09-20 | Central Garden & Pet Company | Composite coating for seed |
US11324160B1 (en) | 2017-06-14 | 2022-05-10 | Central Garden & Pet Company | Composite coating for seed |
AU2018313067B2 (en) | 2017-08-09 | 2024-02-08 | SABIC Agri-Nutrients Company | Extruded fertilizer granules with urease and/or nitrification inhibitors |
CN107337543B (en) * | 2017-08-21 | 2020-11-24 | 济南大学 | Saline-alkali soil slow-release fertilizer and preparation method thereof |
CN107382510B (en) * | 2017-08-21 | 2020-11-24 | 济南大学 | Controllable slow-release fertilizer and preparation method thereof |
BR112020006320A2 (en) | 2017-09-27 | 2020-09-24 | Pioneer Hi-Bred International, Inc. | agricultural composition, methods for producing an agricultural composition, method for increasing the absorption of a crop protection agent in a crop plant, method for increasing the yield of a crop in a field, method of providing a plurality of agricultural microspheres of prolonged release to a crop field comprising a plurality of crop seeds and method of increasing yield of a crop plant |
CN107879766A (en) * | 2017-11-08 | 2018-04-06 | 贵州省化工研究院 | A kind of ureaformaldehyde method of modifying and modified urea formaldehyde and its application |
CN107721622A (en) * | 2017-11-16 | 2018-02-23 | 来安县薜必英家庭农场 | It is a kind of to save artificial paddy-specific slow release fertilizer |
CN108456121A (en) * | 2018-02-09 | 2018-08-28 | 郑州高富肥料有限公司 | A kind of nucleocapsid slow-release or control-release fertilizer and preparation method thereof |
CN108314561A (en) * | 2018-05-09 | 2018-07-24 | 河北卓秋实业有限公司 | A kind of macromolecule long-acting slow-release selenium-rich fertilizer and preparation method thereof |
DE102018210030A1 (en) | 2018-06-20 | 2019-12-24 | Thyssenkrupp Ag | Use and recycling of supercritical CO2 as a solvent for PLA and other biodegradable polymers in the coating process for fertilizers |
US20210400985A1 (en) | 2018-10-10 | 2021-12-30 | Pioneer Hi-Bred International, Inc. | Plant growth-promoting microbes, compositions, and uses |
WO2020106828A2 (en) * | 2018-11-20 | 2020-05-28 | Arr-Maz Products, L.P. | Fertilizer coating applied in the reduction of caking and moisture adsorption |
WO2020205764A1 (en) | 2019-04-02 | 2020-10-08 | Corn Products Development, Inc. | Aflatoxin biocontrol composition |
JP2022535047A (en) * | 2019-06-05 | 2022-08-04 | オーエムエス インベストメンツ,インコーポレイテッド | Controlled release fertilizer composition |
US20210229883A1 (en) * | 2020-01-29 | 2021-07-29 | Jarod D. Wenrick | Biodegradable additive |
MA62707A1 (en) | 2021-03-22 | 2023-12-29 | Bioconsortia Inc | IMPROVED DIAZOTROPHIC MICROORGANISMS FOR USE IN AGRICULTURE |
US11530169B1 (en) | 2021-10-07 | 2022-12-20 | Bio-Soil Enhancers, Inc. | Fertilizer microbe combination |
CN114747446B (en) * | 2022-04-01 | 2023-06-27 | 中国科学院地理科学与资源研究所 | Corn and soybean mixed planting method |
CN117285393A (en) * | 2022-08-09 | 2023-12-26 | 南京林业大学 | Slow-release urea-based compound sprayable film-forming fertilizer and preparation method thereof |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2810710A (en) | 1955-06-10 | 1957-10-22 | Borden Co | Urea formaldehyde condensation product |
US3649598A (en) | 1969-08-22 | 1972-03-14 | Sumitomo Chemical Co | Method for producing condensation products of urea and formaldehyde using sodium borate as an alkalizer |
US3712879A (en) | 1969-04-05 | 1973-01-23 | G Blume | Urea formaldehyde condensation products |
US3759687A (en) | 1971-04-30 | 1973-09-18 | A Nobell | Method for manufacture of ureaformaldehyde fertilizer |
FR2270221A1 (en) | 1974-05-08 | 1975-12-05 | Saarbergwerke Ag | |
US4753035A (en) | 1987-02-04 | 1988-06-28 | Dow Corning Corporation | Crosslinked silicone coatings for botanical seeds |
RU1819877C (en) | 1991-01-09 | 1993-06-07 | Институт общей и неорганической химии АН БССР | Composition for treating mineral fertilizers |
US5501720A (en) | 1994-06-13 | 1996-03-26 | Georgia-Pacific Corporation | Spray-dried urea-formaldehyde and lignosulfonate compositions |
Family Cites Families (119)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2648609A (en) | 1949-01-21 | 1953-08-11 | Wisconsin Alumni Res Found | Method of applying coatings to edible tablets or the like |
BE567352A (en) * | 1957-05-06 | |||
US2986840A (en) * | 1957-12-16 | 1961-06-06 | Hugh R Rogers | Seed and method of preparing same with urea-aldehyde resin |
US2999336A (en) | 1958-08-09 | 1961-09-12 | Cie Nord Africaine De L Hyperp | Preparation of coated seeds |
US2999335A (en) * | 1959-06-30 | 1961-09-12 | Gadget Of The Month Club Inc | Manually operable carousel-simulating toy |
US3227543A (en) * | 1961-04-27 | 1966-01-04 | Hercules Powder Co Ltd | Manufacture and use of urea-formaldehyde compositions in fertilizer |
US3981845A (en) | 1963-08-23 | 1976-09-21 | Ciba-Geigy Ag | High surface area polycondensation polymer particulates based on urea and formaldehyde |
US3316676A (en) | 1965-03-03 | 1967-05-02 | Grace W R & Co | Seed packages of water insoluble polyethylene oxide |
US3438764A (en) | 1965-08-30 | 1969-04-15 | Du Pont | Stable fertilizer ammoniating solution and method of making said solution |
FR1456008A (en) * | 1965-09-02 | 1966-05-20 | Azote Office Nat Ind | Wet process for manufacturing pure phosphoric acid |
US3598565A (en) | 1968-07-30 | 1971-08-10 | Thomas M Graves | Seed coating composition |
US3705794A (en) * | 1969-08-15 | 1972-12-12 | Scott & Sons Co O M | Foamed fertilizers and combination products |
US3621612A (en) | 1970-04-24 | 1971-11-23 | Northrup King & Co | Process of regulating plant growth |
US3707807A (en) | 1970-12-02 | 1973-01-02 | Chevron Res | Seed coating composition |
US3735017A (en) * | 1971-04-12 | 1973-05-22 | Amp Inc | Lead frames and method of making same |
US3713800A (en) * | 1971-05-24 | 1973-01-30 | J Karnemaat | Process for producing garbage based fertilizer |
US3677736A (en) | 1971-06-08 | 1972-07-18 | Allied Chem | Liquid fertilizer suspension containing ureaform |
US3911183A (en) | 1972-11-10 | 1975-10-07 | Thomas M Hinkes | Seed coating process and product |
US3808740A (en) | 1973-01-08 | 1974-05-07 | Northrup King & Co | Coated seeds and methods |
GB1380865A (en) * | 1973-03-23 | 1975-01-15 | Coated Seed | Pasture establishment |
JPS5747642B2 (en) | 1973-08-08 | 1982-10-12 | ||
US3905152A (en) | 1974-07-02 | 1975-09-16 | Minnesota Mining & Mfg | Coated seeds |
US4066490A (en) | 1974-11-05 | 1978-01-03 | Shin Nihon Ryokugaku Kabushiki Kaisha | Method for producing a lawn nursery strip |
CA1041484A (en) | 1974-12-20 | 1978-10-31 | Silvio Vargiu | Process for the preparation of urea-formaldehyde condensates to be used as fertilizers |
IL47144A (en) | 1975-04-22 | 1978-06-15 | Chem & Phosphates Ltd | Fertilizer compound the ureaform type and a method for the production thereof |
US4058067A (en) | 1975-05-27 | 1977-11-15 | Fmc Corporation | Treatment of seedlings |
US4025329A (en) | 1975-12-04 | 1977-05-24 | O. M. Scott & Sons Company | Particulate urea-formaldehyde fertilizer composition and process |
US4190981A (en) | 1977-08-26 | 1980-03-04 | Muldner Lawrence Carl | Mat for growing lawns or other vegetation |
US4174957A (en) | 1978-03-06 | 1979-11-20 | Hydrosoil Corporation | Synthetic growing medium and method of preparing it |
US4192095A (en) | 1978-07-31 | 1980-03-11 | Haslam Lester H | Seed treating suspension and method of seed treatment |
US4357780A (en) | 1978-12-20 | 1982-11-09 | Ball Harry J | Fibrous web for planting seeds, method of using same, apparatus for producing same |
US4219966A (en) | 1979-03-21 | 1980-09-02 | Mccalister William J | Method of rapid grass growth |
US4245432A (en) | 1979-07-25 | 1981-01-20 | Eastman Kodak Company | Seed coatings |
US4249343A (en) | 1979-07-25 | 1981-02-10 | Eastman Kodak Company | Seed coatings |
US4251952A (en) | 1979-08-06 | 1981-02-24 | Sandoz Ltd. | Plant seed coating |
US4296512A (en) * | 1979-11-09 | 1981-10-27 | Union Carbide Corporation | Method for making fasteners |
US4280830A (en) * | 1980-01-23 | 1981-07-28 | O. M. Scott And Sons Company | Urea-formaldehyde granular fertilizer |
US4333265A (en) * | 1980-03-13 | 1982-06-08 | Arnold Richard L | Air drop planting system and improved planting device for same |
US4298512A (en) | 1980-04-24 | 1981-11-03 | W. A. Cleary Chemical Corporation | Urea formaldehyde dispersions modified with higher aldehydes |
US4411663A (en) * | 1981-07-21 | 1983-10-25 | Adnovum Ag | Reactable reagents with substrates |
US4378238A (en) | 1981-07-30 | 1983-03-29 | The O.M. Scott & Sons Company | Controlled release particulate fertilizer composition |
US4411683A (en) | 1981-07-30 | 1983-10-25 | The O. M. Scott & Sons Company | Process of preparing solid controlled release fertilizer composition |
US4832728A (en) | 1981-09-25 | 1989-05-23 | Melamine Chemicals, Inc. | Fertilizer compositions, processes of making them, and pocesses of using them |
DE3150631A1 (en) * | 1981-12-21 | 1983-07-21 | Saat- Und Erntetechnik Gmbh, 3440 Eschwege | Use of treated seeds for sowing |
US4409015A (en) | 1982-02-11 | 1983-10-11 | Borden, Inc. | Flowable liquid fertilizer containing suspended water insoluble nitrogen |
US4429075A (en) | 1982-05-17 | 1984-01-31 | Chem-Nuclear Systems, Inc. | Cross-linked urea-formaldehyde polymer matrix compositions containing cyclic intermediate structures |
US4526608A (en) * | 1982-07-14 | 1985-07-02 | Zoecon Corporation | Certain 2-pyridyloxyphenyl-oximino-ether-carboxylates, herbicidal compositions containing same and their herbicidal method of use |
US4410685A (en) | 1982-09-10 | 1983-10-18 | Borden, Inc. | Hydrolytically stable urea-formaldehyde resins and process for manufacturing them |
US4501851A (en) | 1982-09-10 | 1985-02-26 | Borden, Inc. | Urea-formaldehyde precursor |
US4474925A (en) | 1982-12-10 | 1984-10-02 | W. A. Cleary Chemical Corporation | Urea formaldehyde dispersions modified with polyfunctional aldehydes |
LU84601A1 (en) | 1983-01-24 | 1984-10-24 | Sba Chimie Societe Anonyme | PROCESS AND COMPOSITIONS FOR CONDITIONING FLOORS |
US4526606A (en) | 1983-05-05 | 1985-07-02 | Georgia-Pacific Resins, Inc. | Urea-formaldehyde liquid fertilizer suspension |
US4493725A (en) | 1983-05-17 | 1985-01-15 | Korea Advanced Institute Of Science And Technology | Fertilizer product with sustained action and process therefor |
US4596593A (en) | 1983-05-25 | 1986-06-24 | Nitto Chemical Industry Co., Ltd. | Urea-formaldehyde condensate-based slow release nitrogen fertilizer and process for producing same |
US4780988A (en) * | 1983-05-25 | 1988-11-01 | Korber Ag | Method of producing rod-shaped incipient plant carrying devices |
US4530713A (en) * | 1983-07-25 | 1985-07-23 | Borden, Inc. | Urea-formaldehyde fertilizer suspensions |
US4735015A (en) | 1983-11-25 | 1988-04-05 | Basf Corporation | Seed protective coating |
FR2556172B1 (en) | 1983-12-12 | 1986-09-05 | Interox | COATED SEEDS AND PROCESS FOR OBTAINING THEM |
FR2556173B1 (en) | 1983-12-12 | 1986-09-05 | Solvay | COATED SEEDS AND PROCESS FOR OBTAINING THEM |
JPS60162201A (en) * | 1984-02-01 | 1985-08-24 | Mita Ind Co Ltd | Reflection plate |
US4578105A (en) | 1985-01-07 | 1986-03-25 | Hawkeye Chemical Company | Stable ureaform dispersion fertilizers |
JPS61204190A (en) * | 1985-03-06 | 1986-09-10 | Kanto Ishi Pharma Co Ltd | Glycoside and its production |
US4752317A (en) | 1985-07-08 | 1988-06-21 | Reed Lignin, Inc. | Controlled release formation for urea |
US4756738A (en) | 1985-07-08 | 1988-07-12 | Reed Lignin, Inc. | Controlled release formulation for fertilizers |
US4789391A (en) | 1985-07-08 | 1988-12-06 | Reed Lignin Inc. | Controlled release formulation for fertilizers |
IT209335Z2 (en) * | 1986-06-30 | 1988-09-20 | Nordica Spa | HEATING DEVICE, PARTICULARLY FOR SKI SHOES. |
US4906276A (en) | 1986-11-03 | 1990-03-06 | American Colloid Company | Plant transplant and plant preservation medium |
US4960858A (en) * | 1988-07-29 | 1990-10-02 | The United States Of America As Represented By The Secretary Of The Air Force | Rigid rod aromatic benzimidazole/thiazole heterocyclic polymer |
US5022182A (en) | 1988-08-22 | 1991-06-11 | Promac Industries, Ltd. | Agricultural processes and products |
US5043007A (en) | 1988-08-25 | 1991-08-27 | Davis Bobby G | Process for the production of fertilizer and the fertilizer produced thereby |
US6309440B1 (en) | 1998-08-25 | 2001-10-30 | Thomas T. Yamashita | Method and composition for promoting and controlling growth of plants |
US5797976A (en) * | 1988-09-09 | 1998-08-25 | Yamashita; Thomas T. | Method and composition for promoting and controlling growth of plants |
US5344471A (en) | 1988-11-15 | 1994-09-06 | Sri International | Plant root coatings |
US5110898A (en) | 1988-11-28 | 1992-05-05 | Georgia-Pacific Corporation | Method for manufacturing amino-aldehyde compositions |
US4960856A (en) | 1988-11-28 | 1990-10-02 | Georgia-Pacific Corporation | Urea-formaldehyde compositions and method of manufacture |
US5300127A (en) | 1989-01-06 | 1994-04-05 | Agricultural Genetics Company Limited | Seed coatings |
GB8900313D0 (en) | 1989-01-06 | 1989-03-08 | Agricultural Genetics Co | Seed coatings |
JP2903593B2 (en) | 1989-02-14 | 1999-06-07 | 三菱化学株式会社 | Method for producing granular slow-release nitrogen fertilizer |
CA2010408A1 (en) | 1989-03-06 | 1990-09-06 | Saburo Murayama | Pelletized seed |
JPH0322905A (en) * | 1989-03-06 | 1991-01-31 | Nitto Chem Ind Co Ltd | Pelletized seed |
AU5569990A (en) | 1989-05-05 | 1990-11-29 | Allelix Crop Technologies | Enhancement of conifer seedling growth |
US4997469A (en) | 1990-01-10 | 1991-03-05 | Harmony Products, Inc. | High integrity, low odor, natural based nitrogenous granules for agriculture |
US5106646A (en) * | 1991-01-08 | 1992-04-21 | Kraft General Foods, Inc. | Stabilized low calorie syrup with reduced sweetener solids content |
US5262381A (en) | 1991-09-06 | 1993-11-16 | Osaka Gas Co. Ltd. | Method to enhance inoculation of root systems |
US5266097A (en) | 1992-12-31 | 1993-11-30 | The Vigoro Corporation | Aminoureaformaldehyde fertilizer method and composition |
DE4308505A1 (en) | 1993-01-19 | 1994-09-08 | Polyplant Gmbh | Process for the preparation of a culture substrate which is flexible, workable, biodegradable and environmentally friendly and which is capable of storing (retaining) water and fertilisers and of being composted |
US5376175A (en) | 1993-08-17 | 1994-12-27 | Long, Jr.; Richard L. | Method and means for uniformly coating particulate material |
US5443637A (en) | 1993-09-17 | 1995-08-22 | Coating Machinery Systems, Inc. | Means for continuously coating particulate material |
US5674971A (en) | 1995-06-06 | 1997-10-07 | Georgia-Pacific Resins, Inc. | Urea-formaldehyde resin composition and method of preparation thereof |
CN1040096C (en) * | 1995-08-17 | 1998-10-07 | 郑州乐喜施磷复肥技术研究推广中心 | Releasion controlled fertilizer |
US6058649A (en) | 1995-09-11 | 2000-05-09 | Her Majesty The Queen In Right Of Canada, As Represented By The Minister Of Agriculture | Seed coating for enhancing the level of selenium in crops |
US5618330A (en) | 1995-12-20 | 1997-04-08 | Artozon Sylvester; Rosa I. | Plant treatment compositions and process |
US5849320A (en) | 1996-06-13 | 1998-12-15 | Novartis Corporation | Insecticidal seed coating |
US5725630A (en) * | 1996-07-31 | 1998-03-10 | Helena Chemical Co. | Dry granular fertilizer blend and a method of fertilizing plants |
US6088957A (en) | 1996-10-09 | 2000-07-18 | Mjm Technologies, L.L.P. | Seed-containing fertilizer package |
US6009663A (en) | 1996-10-09 | 2000-01-04 | Mjm Technologies, L.L.P. | Carrier for seeds and consumable particulates |
CN1237876A (en) | 1996-10-31 | 1999-12-08 | 先锋高级育种国际股份有限公司 | Seed coatings |
US6022827A (en) | 1997-01-28 | 2000-02-08 | E. I. Du Pont De Nemours And Company | Sod or other vegetation having a root support matrix with beneficial plant adjuvants thereon |
US6209259B1 (en) | 1997-07-11 | 2001-04-03 | Encap, Llc | Seeding treatments |
US5860245A (en) | 1997-08-19 | 1999-01-19 | Welch; Robin Lee | Vegetable growing mat |
US5935909A (en) | 1997-09-16 | 1999-08-10 | Donlar Corporation | Treatment of tree seedlings to enhance survival rate |
CN1138728C (en) * | 1998-06-02 | 2004-02-18 | 朱永绥 | Method for producing urea-formaldehyde compound fertilizer |
US6464746B2 (en) | 1998-07-24 | 2002-10-15 | Lebanon Chemical Corporation | Homogeneous granules of slow-release fertilizer and method of making the same |
US6048378A (en) | 1998-08-13 | 2000-04-11 | Lesco, Inc. | Highly available particulate controlled release nitrogen fertilizer |
GB9902665D0 (en) * | 1999-02-05 | 1999-03-31 | Mandops Uk Ltd | Foliar fertiliser |
US6432256B1 (en) * | 1999-02-25 | 2002-08-13 | Applied Materials, Inc. | Implanatation process for improving ceramic resistance to corrosion |
EP1036492A1 (en) * | 1999-03-13 | 2000-09-20 | Aventis Research & Technologies GmbH & Co. KG | Seed treatment composition |
US6254655B1 (en) * | 1999-03-18 | 2001-07-03 | Oms Investments, Inc. | Processes for preparing granular composite fertilizer compositions and products produced thereby |
DE19923525A1 (en) * | 1999-05-21 | 2000-11-23 | Saar En Gmbh | Urea-formaldehyde fertilizer preparation, including addition of hexamethylene tetramine and/or tetramethylene diamine to precondensate before final condensation to release ammonia for neutralization in situ |
US6306194B1 (en) | 1999-09-14 | 2001-10-23 | Georgia-Pacific Resins, Inc. | Controlled release urea-formaldehyde liquid fertilizer resins with high nitrogen levels |
US6230438B1 (en) | 1999-09-20 | 2001-05-15 | Grow Tec Inc. | Water insoluble, freeze sensitive seed coatings |
US6432156B1 (en) | 1999-11-17 | 2002-08-13 | The Homestead Corp. | Method of coating materials and materials formed thereby |
US6858634B2 (en) | 2000-09-15 | 2005-02-22 | Monsanto Technology Llc | Controlled release formulations and methods for their production and use |
DE10102555B4 (en) * | 2001-01-19 | 2014-04-10 | Suet Saat- Und Erntetechnik Gmbh | Seed with an envelope containing nitrogen fertilizer |
US20020134012A1 (en) | 2001-03-21 | 2002-09-26 | Monsanto Technology, L.L.C. | Method of controlling the release of agricultural active ingredients from treated plant seeds |
ITMI20011831A1 (en) * | 2001-08-30 | 2003-03-02 | Sadepan Chimica S R L | PROCEDURE FOR THE PRODUCTION OF AZIOATED AND COMPLEX FERTILIZERS, EVEN WITH MICROELEMENTS, IN HIGH SPHERICAL GRANULAR FORM WITH HIGH HOMOGENEOUS |
KR101002884B1 (en) | 2002-03-26 | 2010-12-21 | 조지아-퍼시픽 케미칼즈 엘엘씨 | Slow Release Nitrogen Fertilizer |
JP2004129614A (en) | 2002-10-11 | 2004-04-30 | Takii Shubyo Kk | Method for improving germination of seed, germination improved seed and coated seed |
JP4490664B2 (en) | 2003-09-25 | 2010-06-30 | 住友化学株式会社 | Seed germination improvement method, germination improvement seed, coating seed and germination improvement agent |
-
2003
- 2003-03-26 KR KR1020047014895A patent/KR101002884B1/en not_active IP Right Cessation
- 2003-03-26 CN CNB038090953A patent/CN1309685C/en not_active Expired - Fee Related
- 2003-03-26 US US10/396,702 patent/US6900162B2/en not_active Expired - Lifetime
- 2003-03-26 US US10/396,706 patent/US6936573B2/en not_active Expired - Lifetime
- 2003-03-26 WO PCT/US2003/008453 patent/WO2003082775A1/en not_active Application Discontinuation
- 2003-03-26 AU AU2003233412A patent/AU2003233412B2/en not_active Ceased
- 2003-03-26 AU AU2003224717A patent/AU2003224717B2/en not_active Ceased
- 2003-03-26 AU AU2003218151A patent/AU2003218151A1/en not_active Abandoned
- 2003-03-26 KR KR1020047014894A patent/KR101084819B1/en not_active IP Right Cessation
- 2003-03-26 EP EP03721400.4A patent/EP1487254B1/en not_active Expired - Lifetime
- 2003-03-26 CA CA2480173A patent/CA2480173C/en not_active Expired - Fee Related
- 2003-03-26 EP EP20140193533 patent/EP2839734A3/en not_active Withdrawn
- 2003-03-26 US US10/396,701 patent/US6936681B1/en not_active Expired - Lifetime
- 2003-03-26 JP JP2003579560A patent/JP4430945B2/en not_active Expired - Fee Related
- 2003-03-26 BR BRPI0308607-0B1A patent/BR0308607B1/en not_active IP Right Cessation
- 2003-03-26 EP EP03728259.7A patent/EP1487761B1/en not_active Expired - Lifetime
- 2003-03-26 US US10/396,700 patent/US7213367B2/en not_active Expired - Lifetime
- 2003-03-26 CA CA2479614A patent/CA2479614C/en not_active Expired - Fee Related
- 2003-03-26 WO PCT/US2003/007800 patent/WO2003082003A2/en not_active Application Discontinuation
- 2003-03-26 BR BRPI0308609-7B1A patent/BR0308609B1/en not_active IP Right Cessation
- 2003-03-26 WO PCT/US2003/008454 patent/WO2003082005A2/en active Application Filing
- 2003-03-26 WO PCT/US2003/008452 patent/WO2003082004A2/en active Application Filing
- 2003-03-26 MX MXPA04009230A patent/MXPA04009230A/en active IP Right Grant
- 2003-03-26 JP JP2003579559A patent/JP4456875B2/en not_active Expired - Fee Related
- 2003-03-26 MX MXPA04009282A patent/MXPA04009282A/en active IP Right Grant
- 2003-03-26 ES ES03728259.7T patent/ES2450130T3/en not_active Expired - Lifetime
- 2003-03-26 AU AU2003224718A patent/AU2003224718A1/en not_active Abandoned
-
2006
- 2006-01-06 HK HK06100290.1A patent/HK1080446B/en not_active IP Right Cessation
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2810710A (en) | 1955-06-10 | 1957-10-22 | Borden Co | Urea formaldehyde condensation product |
US3712879A (en) | 1969-04-05 | 1973-01-23 | G Blume | Urea formaldehyde condensation products |
US3649598A (en) | 1969-08-22 | 1972-03-14 | Sumitomo Chemical Co | Method for producing condensation products of urea and formaldehyde using sodium borate as an alkalizer |
US3759687A (en) | 1971-04-30 | 1973-09-18 | A Nobell | Method for manufacture of ureaformaldehyde fertilizer |
FR2270221A1 (en) | 1974-05-08 | 1975-12-05 | Saarbergwerke Ag | |
US4753035A (en) | 1987-02-04 | 1988-06-28 | Dow Corning Corporation | Crosslinked silicone coatings for botanical seeds |
RU1819877C (en) | 1991-01-09 | 1993-06-07 | Институт общей и неорганической химии АН БССР | Composition for treating mineral fertilizers |
US5501720A (en) | 1994-06-13 | 1996-03-26 | Georgia-Pacific Corporation | Spray-dried urea-formaldehyde and lignosulfonate compositions |
Non-Patent Citations (1)
Title |
---|
See also references of EP1487761A4 |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7753984B2 (en) | 2005-04-07 | 2010-07-13 | Yaqing Liu | Slow and controlled-release polymeric fertilizer with multiple nutrients, preparing process for the same and the use method of the same |
US8562711B2 (en) | 2006-01-12 | 2013-10-22 | Koch Agronomic Services, Llc | Additive containing N-(n-butyl)thiophsphoric triamide for urea-based fertilizer |
US9512045B2 (en) | 2006-01-12 | 2016-12-06 | Koch Agronomic Services, Llc | Additive containing N-(N-butyl)thiophosphoric triamide for urea-based fertilizer |
US8419819B2 (en) * | 2006-06-23 | 2013-04-16 | Koch Agronomic Services, Llc | Solid urea fertilizer |
US9517973B2 (en) | 2006-06-23 | 2016-12-13 | Koch Agronomic Services, Llc | Solid urea fertilizer |
EP2747557A4 (en) * | 2011-08-25 | 2015-05-13 | Dow Agrosciences Llc | Pesticidal compositions with enhanced active ingredient retention in pest control zones |
US9034072B2 (en) | 2012-08-15 | 2015-05-19 | Koch Agronomic Services, Llc | Compositions of substantially spherical particles and methods of making thereof |
US9682894B2 (en) | 2012-08-15 | 2017-06-20 | Koch Agronomic Services, Llc | Compositions of urea formaldehyde particles and methods of making thereof |
Also Published As
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA2479614C (en) | Slow release nitrogen fertilizer | |
US9446991B2 (en) | Compositions of substantially spherical particles and methods of making thereof | |
WO2016070184A1 (en) | Nitrification inhibitor compositions and methods of making thereof | |
ZA200407493B (en) | Slow release nitrogen fertilizer |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A2 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NI NO NZ OM PH PL PT RO RU SC SD SE SG SK SL TJ TM TN TR TT TZ UA UG UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A2 Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2003728259 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2479614 Country of ref document: CA Ref document number: 1373/KOLNP/2004 Country of ref document: IN |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2004/07493 Country of ref document: ZA Ref document number: 200407493 Country of ref document: ZA |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2003233412 Country of ref document: AU |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2003579560 Country of ref document: JP Ref document number: 1020047014895 Country of ref document: KR |
|
WWE | Wipo information: entry into national phase |
Ref document number: PA/a/2004/009282 Country of ref document: MX |
|
WWE | Wipo information: entry into national phase |
Ref document number: 20038090953 Country of ref document: CN |
|
WWP | Wipo information: published in national office |
Ref document number: 1020047014895 Country of ref document: KR |
|
WWP | Wipo information: published in national office |
Ref document number: 2003728259 Country of ref document: EP |