COMPOSITIONS AND METHODS FOR SUSTAINED RELEASE OF AGRICULTURAL MACRONUTRIENTS
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United States of America Patent
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Feb 20, 2014
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Jun 5, 2010
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Abstract
A solid fertilizer composition wherein a nitrogen-containing macronutrient is adsorbed on the surface of hydroxyapatite phosphate nanoparticles and wherein the ratio of the nitrogen-containing macronutrient to the hydroxyapatite phosphate is between 1:1 and 10:1. In certain embodiments, said solid fertilizer composition slowly releases the nitrogen-containing macronutrient to soil.
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