Gulf Oil Corporation

Gulf Research & Development Company

James L Ahle

Jerry L Rutter

The present invention is directed to a class of novel 1-benzoyl-3-thiosemicarbazides which are useful as plant growth regulants. The present invention is also directed to methods and formulations for plant growth regulation.

Substituted thiosemicarbazides, their manufacture and use as plant

Wild oats are killed over a substantial period of growth from two-leaf through four-leaf stages by applying post-emergently to the oats plants an effective amount of a combination of one part of barban with from about two to five parts, preferably three to four parts of CIPC, a herbicide which is normally applied pre-emergently.

Method of selectively combating wild oats

Certain noxious weeds, particularly yellow foxtail (Setaria glanca) and beggarweed (Desmodium torguosum) are combated in a number of crops by preemergent application of a synergistic combination of preferably about two parts by weight of N-benzyl-N-isopropylpivalamide with one part by weight of 2-cyclopropanecarboxamide-5-(2-chloro-1,1-dimethylethyl)-1,3,4-thiadiazole . Synergistic interaction of the two compounds is graphically illustrated by isobole charts of application rates which produce severe injury to specific weeds.

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Shawnee, KS, United States of America

James L Ahle