Fertilizers having a high hardness and storage stability
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United States of America Patent
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May 19, 1992
Issued Date -
N/A
app pub date -
Mar 14, 1991
filing date -
Dec 10, 1990
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Abstract
A fertilizer composition characterized by high mechanical resistance and anti-caking properties comprises a compound selected from the group consisting of urea, ammonium sulphate, nitrogen-potassium-phosphorus granulates, mono-ammonic phosphate, di-ammonic phosphate, potassium chloride and mixtures thereof admixed with a hydrosoluble lignate salt selected from the group consisting of sodium lignates, alkaline metal lignates, ammonium lignates, and mixtures thereof in an amount of between 0.1 to 5.0 wt. % in the final fertilizer composition.
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