SEDL / STP / STP1112-EB / STP16870S

Starch Encapsulated Herbicide Formulations: Scale-Up and Laboratory Evaluations

Wing, RE
research chemistsresearch agronomist, Northern Regional Research Center, Agricultural Research ServiceAgricultural Research Service, U. S. Department of Agriculture, Purdue University, PeoriaWest Lafayette, ILIN

Carr, ME
research chemistsresearch agronomist, Northern Regional Research Center, Agricultural Research ServiceAgricultural Research Service, U. S. Department of Agriculture, Purdue University, PeoriaWest Lafayette, ILIN

Doane, WM
research chemistsresearch agronomist, Northern Regional Research Center, Agricultural Research ServiceAgricultural Research Service, U. S. Department of Agriculture, Purdue University, PeoriaWest Lafayette, ILIN

Schreiber, MM
research chemistsresearch agronomist, Northern Regional Research Center, Agricultural Research ServiceAgricultural Research Service, U. S. Department of Agriculture, Purdue University, PeoriaWest Lafayette, ILIN

Pages: 7    Published: Jan 1992

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Abstract

Non-chemically modified cornstarch effectively encapsulates herbicides. Thousand pound quantities of atrazine, alachlor and metolachlor were prepared by extrusion followed by drying, grinding, and sieving to give the desired size granules. Leaching potential of these formulations was evalulated using soil columns and bioassay techniques. Large quantities of products were sent to cooperators in 10 states for evaluation along with commercial formulations.