CA2480173A1 - Slow release nitrogen seed coat - Google Patents
Slow release nitrogen seed coat Download PDFInfo
- Publication number
- CA2480173A1 CA2480173A1 CA002480173A CA2480173A CA2480173A1 CA 2480173 A1 CA2480173 A1 CA 2480173A1 CA 002480173 A CA002480173 A CA 002480173A CA 2480173 A CA2480173 A CA 2480173A CA 2480173 A1 CA2480173 A1 CA 2480173A1
- Authority
- CA
- Canada
- Prior art keywords
- urea
- seed
- formaldehyde
- methylol
- mole ratio
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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
Abstract
A seed for enhancing the extended delivery of nitrogen needed for plant development and growth, the seed having a slow release nitrogen coating (Fig . 1) of a particulate UF polymer adhered to the seed with an adhesive binder.< /SDOAB>
Claims (25)
1. A plant seed having an adherent coating thereon comprising an adhesive binder and a particulate urea-formaldehyde polymer.
2. The plant seed of claim 1 wherein the particulate urea-formaldehyde polymer is made by acidifying a aqueous methylol urea solution, wherein the aqueous methylol urea solution either contains a dispersing agent or is subjected to a high shear condition during the acidifying, to form an aqueous dispersion of insoluble urea-formaldehyde polymer particles and drying the dispersion to recover the urea-formaldehyde polymer particles.
3. The seed of claim 2 wherein the adhesive binder is applied to the seed as a latex and dried.
4. The seed of claim 3 wherein the latex is selected from an acrylic polymer emulsion and a polyacylamide polymer emulsion.
5. The seed of claim 2 wherein the aqueous methylol urea solution is made by reacting urea and formaldehyde at a urea:formaldehyde mole ratio of approximately 1:1.
6. The seed of claim 5 wherein the aqueous methylol urea solution is made by reacting urea and formaldehyde at a urea:formaldehyde mole ratio of 0.83:1 to 1.1:1.
7. The method of claim 2 wherein the methylol urea solution is made by reacting urea and formaldehyde at a urea:formaldehyde mole ratio of 0.95:1 to 1.05:1.
8. The seed of claim 2 wherein the aqueous methylol urea solution is made by reacting urea and formaldehyde at a urea:formaldehyde mole ratio of 0.95:1 to 1.05:1 and wherein the methylol urea solution contains a dispersing agent during the acidifying.
9. The seed of claim 1, 2, 5, 6, 7 or 8 wherein the seed is selected from grass seed, barley, oats, corn, sunflower, sugar beets, rape, safflower, flax, canary grass, tomatoes, cotton seed, peanuts, soybean, wheat, rice, alfalfa, sorghum, beans, carrot, broccoli, cabbage and flower seeds.
10. The seed of claim 9 wherein said coating has an additional adjuvant selected from calcium carbonate; gypsum; metal silicates; metal chelates of a metal selected from iron, zinc and manganese; talc; elemental sulfur;
activated carbon; pesticides; herbicides; fungicides; super absorbent polymers; wicking agents; wetting agents; plant stimulants; urea, inorganic fertilizers, sources of phosphorus and sources of potassium.
activated carbon; pesticides; herbicides; fungicides; super absorbent polymers; wicking agents; wetting agents; plant stimulants; urea, inorganic fertilizers, sources of phosphorus and sources of potassium.
11. The seed of claim 9 wherein the particulate urea-formaldehyde polymer is provided in an amount to result in a release of nitrogen at a rate consistent with the growth rate of the plant.
12. The seed of claim 9 wherein the particulate urea-formaldehyde polymer particles contain about 36% nitrogen.
13. A method of enhancing the growth and development of a plant grown from seed comprising providing said seed with an adherent coating thereon comprising an adhesive binder and a particulate urea-formaldehyde polymer prior to planting said seed.
14. The method of claim 13 wherein the particulate urea-formaldehyde polymer is made by acidifying a aqueous methylol urea solution, wherein the aqueous methylol urea solution either contains a dispersing agent or is subjected to a high shear condition during the acidifying, to form an aqueous dispersion of insoluble urea-formaldehyde polymer particles and drying the dispersion to recover the urea-formaldehyde polymer particles.
15. The method of claim 14 wherein the adhesive binder is applied to the seed as a latex and dried.
16. The method of claim 15 wherein the latex is selected from an acrylic polymer emulsion and a polyacylamide polymer emulsion.
17. The method of claim 14 wherein the methylol urea solution is made by reacting urea and formaldehyde at a urea:formaldehyde mole ratio of approximately 1:1.
18. The method of claim 17 wherein the methylol urea solution is made by reacting urea and formaldehyde at a urea:formaldehyde mole ratio of 0.83:1 to 1.1:1.
19. The method of claim 14 wherein the methylol urea solution is made by reacting urea and formaldehyde at a urea:formaldehyde mole ratio of 0.95:1 to 1.05:1.
20. The method of claim 14 wherein the methylol urea solution is made by reacting urea and formaldehyde at a urea:formaldehyde mole ratio of 0.95:1 to 1.05:1 and wherein the methylol urea solution contains a dispersing agent during the acidifying.
21. The method of claim 13, 14, 18, 19 or 20 wherein the seed is selected from grass seed, barley, oats, corn, sunflower, sugar beets, rape, safflower, flax, canary grass, tomatoes, cotton seed, peanuts, soybean, wheat, rice, alfalfa, sorghum, beans, carrot, broccoli, cabbage and flower seeds.
22. The method of claim 21 wherein said seed coating has an additional adjuvant selected from calcium carbonate; gypsum; metal silicates; metal chelates of a metal selected from iron, zinc and manganese; talc; elemental sulfur; activated carbon; pesticides; herbicides; fungicides; super absorbent polymers; wicking agents; wetting agents; plant stimulants; urea, inorganic fertilizers, sources of phosphorus and sources of potassium.
23. The method of claim 21 wherein the particulate urea-formaldehyde polymer is provided in an amount to result in a release of nitrogen at a rate consistent with the growth rate of the plant.
24. The method of claim 21 wherein the particulate urea-formaldehyde polymer particles contain about 36% nitrogen.
25. An artificial seedbed containing a seed according to any one of claims 1, 2, 7, or 8.
Applications Claiming Priority (5)
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 | ||
PCT/US2003/008452 WO2003082004A2 (en) | 2002-03-26 | 2003-03-26 | Slow release nitrogen seed coat |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2480173A1 true CA2480173A1 (en) | 2003-10-09 |
CA2480173C CA2480173C (en) | 2012-12-04 |
Family
ID=28678183
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA2480173A Expired - Fee Related CA2480173C (en) | 2002-03-26 | 2003-03-26 | Slow release nitrogen seed coat |
CA2479614A Expired - Fee Related CA2479614C (en) | 2002-03-26 | 2003-03-26 | Slow release nitrogen fertilizer |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA2479614A Expired - Fee Related CA2479614C (en) | 2002-03-26 | 2003-03-26 | Slow release nitrogen fertilizer |
Country Status (12)
Country | Link |
---|---|
US (4) | US6900162B2 (en) |
EP (3) | EP1487254B1 (en) |
JP (2) | JP4456875B2 (en) |
KR (2) | KR101002884B1 (en) |
CN (1) | CN1309685C (en) |
AU (4) | AU2003224717B2 (en) |
BR (2) | BR0308609B1 (en) |
CA (2) | CA2480173C (en) |
ES (1) | ES2450130T3 (en) |
HK (1) | HK1080446B (en) |
MX (2) | MXPA04009230A (en) |
WO (4) | WO2003082775A1 (en) |
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- 2003-03-26 CA CA2479614A patent/CA2479614C/en not_active Expired - Fee Related
- 2003-03-26 KR KR1020047014895A patent/KR101002884B1/en not_active IP Right Cessation
- 2003-03-26 AU AU2003218151A patent/AU2003218151A1/en not_active Abandoned
- 2003-03-26 ES ES03728259.7T patent/ES2450130T3/en not_active Expired - Lifetime
- 2003-03-26 AU AU2003233412A patent/AU2003233412B2/en not_active Ceased
- 2003-03-26 WO PCT/US2003/008454 patent/WO2003082005A2/en active Application Filing
- 2003-03-26 KR KR1020047014894A patent/KR101084819B1/en not_active IP Right Cessation
- 2003-03-26 MX MXPA04009282A patent/MXPA04009282A/en active IP Right Grant
- 2003-03-26 BR BRPI0308607-0B1A patent/BR0308607B1/en not_active IP Right Cessation
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2006
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