ENHANCED EFFICIENCY FERTILIZER WITH UREASE INHIBITOR AND NITRIFICATION INHIBITOR IN SEPARATE PARTICLES
First Claim
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1. A particulate fertilizer composition comprising:
- (a) a first particle comprising a first core particle and a first shell, wherein the first core particle comprises a urease inhibitor and is substantially free of any nitrification inhibitor; and
(b) a second particle comprising a second core particle and a second shell, wherein the second core particle comprises a nitrification inhibitor and is substantially free of any urease inhibitor.
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Abstract
Particulate fertilizer compositions that include nitrification inhibitors and urease inhibitors are described herein. The inhibitors are separated from each other by being in separate particles. Fertilizer particles in the composition include particles having a core-shell structure, with an inhibitor included in the core particle.
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Citations
20 Claims
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1. A particulate fertilizer composition comprising:
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(a) a first particle comprising a first core particle and a first shell, wherein the first core particle comprises a urease inhibitor and is substantially free of any nitrification inhibitor; and (b) a second particle comprising a second core particle and a second shell, wherein the second core particle comprises a nitrification inhibitor and is substantially free of any urease inhibitor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A particulate fertilizer composition comprising at least two of the following groups of particles:
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(a) a plurality of first particles, each first particle comprising; (i) a first core particle comprising N-(n-butyl) thiophosphoric triamide (NBTPT) and a binder; and (ii) a urea-containing fertilizer composition in contact with the outer surface of the first core particle; and (b) a plurality of second particles, each second particle comprising; (i) a second core particle comprising dicyandiamide (DCD) and a binder; and (ii) a urea-containing fertilizer composition in contact with the outer surface of the second core particle; and (c) a plurality of third particles, each third particle comprising a urea-containing fertilizer and not comprising a core particle. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification