organic derivatives, salts thereof and their use for the control of phytopathogenic

organic compounds having the general formula (I), ** ** Formula wherein: - K represents a group CH2OH or COOR; - Ra represents a C1-C26 alkyl, linear or branched, optionally substituted; - R1 represents a hydrogen or an alkyl group C1-C26, linear or branched, optionally substituted; C1-C26 linear or branched haloalkyl group, optionally substituted; C1-C26 linear or branched alkoxy group, optionally substituted; C1-C26 linear or branched alkylthio group, optionally substituted; a C2-C26 linear or branched alkenyl group, optionally substituted; a C2-C26 linear or branched alkynyl group, optionally substituted; an optionally fused cycloalkyl group C3-C30 cycloalkyl group or a fused optionally substituted C17 steroid type; cycloalkoxy group one C3-C30 optionally fused and optionally substituted; a heterocyclic group optionally substituted; an optionally substituted aryl group; a heteroaryl group optionally substituted; a C6-C12, linear or cyclic saccharide type optionally substituted; an alkyl (C1-C26) amine or amine group (C2-C26) dialkyl group optionally substituted for n different from 0; - R2 and R3, identical or different, represent an alkyl group C1-C3 optionally substituted; - R4 and R5, identical or different, represent a hydrogen atom or an alkyl group C1-C6, linear or branched, optionally substituted; a C2-C6 linear or branched alkenyl group, optionally substituted; a C3-C6 cycloalkyl group optionally substituted; a hydroxyl group; an optionally substituted aryl group; a heteroaryl group optionally substituted; a heterocyclic group optionally substituted; - R4 and R5 can individually form a cycle together with R2; - X represents a nitrogen atom; - Z represents a carbon atom or a sulfur atom; - m represents a number ranging from 1 to 5; - n and p represent a number ranging from 0 to 3; - q has a value of 1; Y- represents a phosphite anion H2PO3 -; s has a value of 1 for Z> = carbon or a value of 2 for Z> = sulfur.