SULPHUR-BASED FERTILIZER COMPOSITION WITH LOW ROCK PHOSPHATE CONTENT
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United States of America Patent
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app pub date -
Feb 7, 2013
filing date -
Feb 7, 2013
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Abstract
A fertilizer composition is provided that includes sulphur and rock phosphate. The fertilizer composition can be a controlled release fertilizer that includes elemental sulphur, a rock phosphate, and a swelling material. The rock phosphate is present in the fertilizer composition in low amounts, e.g., 5% by weight or less. The fertilizer composition can be produced by mixing molten elemental sulphur with rock phosphate and cooling the mixture.
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Cited Art Landscape
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