Agricultural stannanamines

A compound of the formula ##STR10## wherein Z.sub.1, Z.sub.2 and Z.sub.3 are independently C.sub.1 -C.sub.8 allyl, C.sub.5 -C.sub.6 cycloalkyl or phenyl;

• R.sub.1, R.sub.3 and R.sub.4 are independently H, F, Cl, Br, NO.sub.2, CF.sub.3, OCF.sub.2 H, OCF.sub.3, OCF.sub.2 CF.sub.2 H or S(O).sub.k R.sub.9 ;
• and
• R.sub.3 and R.sub.4 can be taken together to form --OCF.sub.2 O-- or --OCF.sub.2 OCF.sub.2 --;
• R.sub.2 is H, F, Cl, Br, NO.sub.2, CF.sub.3 or S(O).sub.k R.sub.9 ;
• R.sub.5 is H, Cl, F, Br or NO.sub.2 ;
• R.sub.6 is H, NO.sub.2 or CF.sub.3 ;
• R.sub.7 is NO.sub.2 or CF.sub.3 ;
• k is 0, 1 or 2;
• R.sub.9 is C.sub.1 -C.sub.2 alkyl, optionally substituted with 2-4 Cl or F
• provided that
• (1) at least two of R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.5 are hydrogen;
• (2) no more than two of the substituents R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are simultaneously NO.sub.2 or CF.sub.3 ;
• (3) when two NO.sub.2 or two S(O).sub.k R.sub.9 groups are present they are not ortho to one another, and further provided that when R.sub.6 is NO.sub.2, then
• (a) R.sub.1 is H, F or Cl when R.sub.3 or other than H, F, or Cl;
• (b) when R.sub.1 =R.sub.3 =R.sub.5, then R.sub.1, R.sub.3 and R.sub.5 are either H or F;
• and
• (c) R.sub.5 is either H or F.