Calcium polysulfide, potassium polysulfide, calcium thiosulfate, and magnesium thiosulfate as urease inhibitors
AssigneeTessenderlo Kerley, Inc.
InventorsMichael Hojjatie, John Clapp, Thomas Fairweather, Constance Lockhart
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Abstract
Use of urease-inhibiting amounts of calcium polysulfide, potassium polysulfide, calcium thiosulfate, magnesium thiosulfate, and blends thereof, in combination with urea-containing fertilizer to significantly reduce potential losses of nitrogen due to ammonia volatilization.
Claims20
A method for inhibiting urease activity on urea-containing fertilizer applied to soil or foliage comprising applying to the soil or foliage a urease-inhibiting quantity of a compound selected from the group consisting of calcium polysulfide, potassium polysulfide, calcium thiosulfate, magnesium thiosulfate, and blends thereof.
A method for inhibiting urease-catalyzed conversion of urea-containing fertilizer applied to soil or foliage to ammonia comprising applying to the soil or foliage a urease-inhibiting quantity of a compound selected from the group consisting of calcium polysulfide, potassium polysulfide, calcium thiosulfate, magnesium thiosulfate, and blends thereof.
A method of reducing nitrogen loss from urea-containing fertilizer applied to soil or foliage comprising applying to the soil or foliage a urease-inhibiting quantity of a compound selected from the group consisting of calcium polysulfide, potassium polysulfide, calcium thiosulfate, magnesium thiosulfate, and blends thereof.
Dependencies are inferred from the claim text.