| abstract |
A method of controlling Take-all disease of plants by applying, preferably to the seed prior to planting, a fungicide of the formula wherein Z1 and Z2 are C or N and are part of an aromatic ring that is thiophene; A is selected from -C(X)-amine, -C(O)-SR3, -NH-C(X)R4, and -C(=NR3)-XR7; B is -Wm-Q(R2)3 or selected from o-tolyl, 1-naphthyl, 2-naphthyl, and 9-phenanthryl, each optionally substituted with halogen or R4; Q is C, Si, Ge, or Sn; W is -C(R3)pH(2-p)-; or when Q is C, W is selected from -C(R3)pH(2-p)-, -N(R3)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; R1, R2, R3, R4 and R7 are herein defined; or an agronomic salt thereof. |