Combination of active ingredients for inhibiting or controlling ammonia nitrification in arable topsoil and subsoil
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United States of America Patent
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Apr 21, 1998
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N/A
app pub date -
Aug 13, 1996
filing date -
Feb 21, 1994
priority date (Note) -
Expired
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Abstract
This patent describes nitrification inhibitors characterized by the fact that they contain as their active ingredients a substituted pyrazole, or a salt or metallic complex thereof, dicyanodiamide, and one of the compounds ammonium thiosulfate, biguanide, or ammonium rhodanide. The combinations of the present invention are more efficacious than the individual ingredients alone and binary combinations of the same ingredients, and are thus superior to same from the ecological, phytotoxicity, and cost-effectiveness stand-points, as well as in terms of their tendencies to form undesirable residues.
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