Inner salts of phosphonic acid useful in the protection of plants from pathogenesis caused by fungi.

摘要

There invention describes inner salts of phosphonic acid having the general formula: CHEM contiene="yes" wherein: R is H, C1-C2 alkyl R1 and R2, identical or different, are H, C3-C4 alkyl when R is H, C1-C12 alkyl when R is C1-C2 alkyl, C3-C5 alkenyl or alkynyl when R is H, C3-C12 alkenyl or alkynyl when R is C1-C2 alkyl, alkoxy-alkyl, aryl when R is C1-C2 alkyl, aralkyl, or, together with N, form a heterocycle R3 and R4, identical or different, are H, C1-C4 alkyl, phenyl. Said inner salts are useful in the defence of plants (vine and tomato) from pathogenesis due to fungi. They are endowed with systemic properties.