SYMPOSIA PAPER Published: 01 January 2001
STP10733S

A New Adjuvant Blend for Glyphosate Herbicides

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With the advent of glyphosate-resistant crop seed, glyphosate has become the herbicide of choice for controlling weeds in a wide range of field crops. Many manufacturers of agricultural chemicals are adding glyphosate herbicides to their herbicide product lines to serve this market need. An adjuvant blend has been developed specifically to enhance the performance of these glyphosate products.

Organosilicone (OS) surfactants are effective adjuvants to boost the performance of a number of foliar-applied herbicides. They are effective adjuvants when used with glyphosate herbicides against a number of weed species, but are weak or antagonistic on certain weeds, particularly lambsquarters and certain perennial grasses. Alkyl diphenyl oxide disulfonate (ADODS) surfactants, on the other hand, are effective on many of the weeds that are not enhanced by the organosilicone surfactants. It has been found that combinations of the organosilicone and ADODS surfactants are effective across a broad range of weed species.

In greenhouse studies using a low rate of glyphosate, the use of a combination of a mixture of OS and ADODS surfactants provided control of a broad range of weed species and provided rainfastness as well.

Author Information

Burow, RF
Dow Corning Corporation, Midland, MI
Penner, D
Michigan State University, E. Lansing, MI
Roggenbuck, FC
Michigan State University, E. Lansing, MI
Wallick, DE
The Dow Chemical Company, Midland, MI
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Details
Developed by Committee: E35
Pages: 246–253
DOI: 10.1520/STP10733S
ISBN-EB: 978-0-8031-5459-9
ISBN-13: 978-0-8031-2891-0