High solids suspension fertilizer
AssigneeKoch Agronomic Services, LLC
InventorRenil John Anthony
Life of this patent
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Abstract
High solids suspension fertilizers containing macro and micronutrients are provided herein. The fertilizers comprise at least one nutrient suspended in a liquid medium, along with a thickener and a dispersant. The liquid compositions advantageously comprise a suspension of larger fertilizer particles compared to prior art compositions, providing for a high solids content. The fertilizers are compatible with fungicide and insecticide seed treatments in coating agronomically important substrates, such as crop seed or prilled and granulated fertilizer. Also provided are methods of producing liquid fertilizers.
Claims7
An aqueous liquid fertilizer composition comprising:
- (a) a nutrient source comprising a source of zinc and a source of manganese and one or more sources of macronutrients, wherein the zinc is present in the nutrient source in an amount of about 15% to about 25% by weight and the manganese is present in the nutrient source in an amount of about 1% to about 10% weight based on the total weight of the source of the nutrient taken as 100% by weight, and wherein the one or more sources of macronutrients include phosphorus in a content of about 20% to about 30% by weight and nitrogen in a content of about 0.5% to about 8% by weight, based on the total weight of the source of the nutrient taken as 100% by weight,
- (b) from about 0.01% to about 1% by weight of a thickener, based on the total weight of the liquid fertilizer composition taken as 100% weight, and
- (c) from about 0.1% to about 10% by weight of a dispersant, based on the total weight of the liquid fertilizer composition taken as 100% weight, and
- wherein the composition has a suspended solids content of at least about 30% by weight, and
- wherein the composition comprises less than about 2% by weight styrene(meth)acrylic copolymer based on the total weight of the liquid fertilizer composition taken as 100% weight, and
- wherein the nutrient source is provided as a powder having an average particle size of about 100 mesh to about 325 mesh, and
- wherein the liquid fertilizer composition comprises about 20% to about 80% by weight of the nutrient source, based on the total weight of the liquid fertilizer composition taken as 100% by weight.
Dependencies are inferred from the claim text.