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superphosphate |
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superphosphate or superphosphate of lime, Ca(H2PO4)2, is a compound produced by treating rock phosphate with sulfuric acid or phosphoric acid, or a mixture of the two. It is the principal carrier of phosphate, the form of phosphorus usable by plants, and is one of the world's most important fertilizers. Ordinary superphosphate contains about 20% available phosphate; double superphosphate (also called treble superphosphate) contains 40%–50% available phosphate. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Applying one-quarter cup of superphosphate around each bush is also recommended. About 65% of the sulfuric acid produced annually is used in the production of agricultural fertilizers that include both superphosphate and ammonium sulfate. Superphosphate is added to make sure roots get off to a fast start. |
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superphosphate
