Fertilizer composition containing micronutrients and methods of making same
First Claim
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1. A fertilizer composition comprising:
- a base fertilizer granule, the base fertilizer granule comprising at least one primary nutrient;
a barrier coating covering at least a portion of an outer surface of the base fertilizer granule, the barrier coating being selected from the group consisting of urea, langbeinite, ammonium sulfate, potassium sulfate, magnesium sulfate, calcium sulfate, elemental sulfur, silicates, respective hydrates, and combinations thereof;
one or more micronutrients dispersed within the barrier coating such that the one or more micronutrients are chemically and physically isolated from the base fertilizer granule; and
a polymer coating covering at least a portion of the barrier coating, and one or more additional micronutrients incorporated into or onto the polymer coating.
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Abstract
A fertilizer composition including a base fertilizer granule with a barrier coating and one or more micronutrients. The base fertilizer material is coated with a barrier coating, and then a coating of one or more micronutrients. Alternatively, the base fertilizer material is coated with a barrier coating having discrete particles of micronutrients dispersed throughout. The barrier coating acts to physically and chemically isolate the micronutrient particles from the underlying fertilizer composition such that more of the micronutrient is available to the soil solution, and ultimately to the root zone of the plant.
45 Citations
5 Claims
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1. A fertilizer composition comprising:
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a base fertilizer granule, the base fertilizer granule comprising at least one primary nutrient; a barrier coating covering at least a portion of an outer surface of the base fertilizer granule, the barrier coating being selected from the group consisting of urea, langbeinite, ammonium sulfate, potassium sulfate, magnesium sulfate, calcium sulfate, elemental sulfur, silicates, respective hydrates, and combinations thereof; one or more micronutrients dispersed within the barrier coating such that the one or more micronutrients are chemically and physically isolated from the base fertilizer granule; and a polymer coating covering at least a portion of the barrier coating, and one or more additional micronutrients incorporated into or onto the polymer coating. - View Dependent Claims (2, 3, 4, 5)
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Specification