Pbi/gordon Corporation

James A Armbruster

Dale Sanson

An auxin acid-catalyzed stable microemulsion pesticide formulation is provided that is clear and stable under a wide range of temperature conditions encountered during distribution, storage, and use of the pesticide formulation. A precursor for the microemulsion includes an auxin ester, a protox inhibitor, and an auxin acid stabilizing agent as active ingredients. Inactive ingredients in the precursor include a microemulsifier, a stabilizing co-emulsifier, a dispersant, and a solvent present in amounts such that when the precursor is added to water of dilution to form a concentrate or a ready-to-use formulation, the clear and stable microemulsion that is spontaneously formed has oily active ingredient-containing nano-sized particles no larger than about 1&#x3bc; dispersed in the water.

Auxin acid-catalyzed stable microemulsion pesticide formulation

A selective synergistic postemergent herbicide composition is provided for the control of undesired broadleaf vegetation and grassyweeds comprising the combination of quinclorac and a selective herbicidal protox inhibitor. About 0.05 part to about 0.1 part by weight of the protox inhibitor is provided for each part by weight of quinclorac. Better synergistic results are obtained from the combination of quinclorac, a selective herbicidal protox inhibitor, and a selective herbicidal auxinic agent. About 0.05 part to about 0.1 part by weight of the protox inhibitor is provided for each part by weight of quinclorac, and about 1 part to about 4 parts by weight of the auxinic herbicidal agent for each part by weight of quinclorac. The synergistic composition hereof has been found to provide more rapid and better control of grassy weeds such as crabgrass than presently registered herbicides.

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Kansas City, MO, United States of America

James A Armbruster