Fungicides for the control of take-all disease of plants.

摘要

A method of controlling Take-all disease of plants by applying, preferably to the seed prior to planting, a fungicide of the formula <CHEM> wherein Z<5> and Z<6> are C or N and are part of an aromatic ring selected from benzene, pyridine, thiophene, furan, pyrrole, pyrazole, thiazole, and isothiazole; A is selected from -C(X)-amine, -C(O)-SR<7>, -NH-C(X)R<8>, and -C(=NR<7>)-XR1/2 ; B is -Wm-Q(R<6>)<7> or selected from o-tolyl, 1-naphthyl, 2-naphthyl, and 9-phenanthryl, each optionally substituted with halogen or R<8>; Q is C, Si, Ge, or Sn; W is -C(R<7>)pH(2-p)-; or when Q is C, W is selected from -C(R<7>)pH(2-p)-, -N(R<7>)mH(1-m)-, -S(O)p-, and -O-; X is O or S; n is 0, 1, 2, or 3; m is 0 or 1; p is 0, 1, or 2; each R is independently selected from a) halo, formyl, cyano, amino, nitro, thiocyanato, isothiocyanato, trimethylsilyl, and hydroxy; b) C1-C4 alkyl, alkenyl, alkynyl, C3-C6 cycloalkyl, and cycloalkenyl, each optionally substituted with halo, hydroxy, thio, amino, nitro, cyano, formyl, phenyl, C1-C4 alkoxy, alkylcarbonyl, alkylthio, alkylamino, dialkylamino, alkoxycarbonyl, (alkylthio)carbonyl, alkylaminocarbonyl, dialkylaminocarbonyl, alkylsulfinyl, or alkylsulfonyl; c) phenyl, furyl, thienyl, pyrrolyl, each optionally substituted with halo, formyl, cyano, amino, nitro, C1-C4 alkyl, alkenyl, alkynyl, alkoxy, alkylthio, alkylamino, dialkylamino, haloalkyl, and haloalkenyl; d) C1-C4 alkoxy, alkenoxy, alkynoxy, C3-C6 cycloalkyloxy, cycloalkenyloxy, alkylthio, alkylsulfinyl, alkylsulfonyl, alkylamino, dialkylamino, alkylcarbonylamino, aminocarbonyl, alkylaminocarbonyl, dialkylaminocarbonyl, alkylcarbonyl, alkylcarbonyloxy, alkoxycarbonyl, (alkylthio)carbonyl, phenylcarbonylamino, phenylamino, each optionally substituted with halo; wherein two R groups may be combined to form a fused ring; each R<6> is independently selected from alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkenyl and phenyl, each optionally substituted with R<8> or halogen; and wherein, when Q is C, R<6> may also be selected from halo, alkoxy, alkylthio, alkylamino, and dialkylamino; wherein two R<6> groups may be combined to form a cyclo group with Q; R<7> is C1-C4 alkyl; R<8> is C1-C4 alkyl, haloalkyl, alkoxy, alkylthio, alkylamino, or dialkylamino; and R1/2 is C1-C4 alkyl, haloalkyl, or phenyl, optionally substituted with halo, nitro, or R<8>; or an agronomic salt thereof. l