Patent Number: 6,762,151

Title: Methods of and compositions for plant defoliation

Abstract: A method of defoliating plants includes applying to plants an effective amount of a first active ingredient selected from the group consisting of substituted nitroguanidine and cyanoguanidine compounds of the formula: ##STR1## wherein R.sub.1 is NO.sub.2 or CN; R.sub.2 is CH.sub.3, C.sub.2 H.sub.5, CF.sub.3, n-C.sub.3 H.sub.7, CH.sub.2 OCH.sub.3 or CH.sub.2 CH.dbd.CH.sub.2 ; X is hydrogen, o-F, m-F, p-F, m-OCH.sub.3, m-OH or p-Cl; and the salts, tautomers and optical isomers thereof; an effective amount of a second active ingredient and optionally, an adjuvant.

Inventors: Lin; Hengchen (Overland Park, KS), Bloomberg; James R. (Overland Park, KS), Philbrook; Brent D. (Holt, MO)

Assignee: Bayer Crop Science LP

International Classification: A01N 51/00 (20060101); A01N 47/44 (20060101); A01N 47/40 (20060101); A01N 047/44 (); A01N 047/30 (); A01N 057/04 (); A01N 043/828 ()

Expiration Date: 07/13/2021