COMPOSITION FOR RETARDING OR REGULATING NITRIFICATION OF AMMONIUM NITROGEN IN SOIL AND SUBSTRATE Russian patent published in 1997 - IPC

FIELD: agriculture. SUBSTANCE: use of combination of active ingredients is more efficient than use of individual compounds or well known combinations. Composition of active ingredients based on at least one compound of general formula I: wherein in case of coordination compounds; M represents different monovalent and multivalent metal ions n is 1 or more, and in case of metal salts of substituted pyrazoles if n is O, it does not exist; in case of anionic complexes and pyrazoles, A represents opposite ion, preferably ammonium alkali or alkaline-earth ion, and in case of anionic complexes, A also represents 3-methyl-pyraxole cation, and in case of metal salts, A further represents Fe and Al, and b is from 0 to 4; is the same or different and represents monovalent and multivalent inorganic or organic anions if q is 0 to 6; R₁ is hydrogen, ethyl or halogen; Z is hydrogen, CONH₂,CNHNH₂ or CSNH₂; S is 1 to 6, and is dicyanodiamide. Said composition retards considerably nitrification process. EFFECT: improved properties of the composition. 2 cl, 4 tbl