Patent ID: 6489438
Filing Date: 2002-12-03
Classification: C05D

Abstract:
A fertilizer formulation comprising, mixed together with an inorganic fertilizer or slurry or liquid fertilizer, one or more polysulfonic acids and, as a nitrification inhibitor, at least one pyrazole of the formula (I): whereinR1 is hydrogen, halogen or C1-C4-alkyl, R2 is C1-C4-alkyl and R3 is hydrogen or CH2OH, and pyrazoles of the formula I in which R1 is halogen or C1-C4-alkyl, R2 is C1-C4-alkyl and R3 is hydrogen, CH2CH2COOH or CH2CH(CH3)COOH or its acid addition salts with an inorganic mineral acid and/or organic acids.