Abstract: A compound and method for controlling Take-all disease of plants are disclosed by applying a fungicide of the formula: ##STR1## wherein Z.sub.1 and Z.sub.2 are carbons of a benzene ring; A is selected from the group consisting of --C(X)-amine wherein the amine is substituted with a first and a second amine substituent or with an alkylaminocarbonyl and a hydrogen, --C(O)--SR.sub.3, --NH--C(X)R.sub.4, and --C(.dbd.NR.sub.3)--XR.sub.7 ;B is --W.sub.m --Q(R.sub.2).sub.3 ; Q is Si, Ge, or Sn; W is --C(R.sub.3).sub.p H.sub.(2-p) --; n is 0, 1, 2, or 3; m is 0 or 1; p is 0, 1, or 2;or an agronomic salt thereof;the first and second amine substituents and R, R.sub.2, R.sub.3, R.sub.4, and R.sub.7 are defined herein.