Use of ammonium syngenite as a slow-acting nitrogen fertilizer
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United States of America Patent
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Nov 28, 1989
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N/A
app pub date -
Mar 17, 1988
filing date -
May 22, 1985
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Expired
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Abstract
Soils are fertilized by a method in which ammonium syngenite (NH.sub.4).sub.2 SO.sub.4.CaSO.sub.4.H.sub.2 O or a mixture of finely divided ammonium sulfate, calcium sulfate, calcium nitrate, calcium chloride and/or dicalcium phosphate is applied to these soils, as a slow-acting nitrogen fertilizer, with the proviso that the molar ratio of Ca to SO.sub.4.sup.-- in the mixture is 1:2.+-.10%.
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