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Increasing Postemergence Herbicide Efficacy and Rainfastness with Silicone Adjuvants

Published online by Cambridge University Press:  12 June 2017

Frank C. Roggenbuck ,
Loston Rowe ,
Donald Penner ,
Len Petroff  and
Richard Burow
Frank C. Roggenbuck
Affiliation:
Dep. Crop Soil Sci., Mich. State Univ., E. Lansing, MI 48824
Loston Rowe
Affiliation:
Dep. Crop Soil Sci., Mich. State Univ., E. Lansing, MI 48824
Donald Penner
Affiliation:
Dep. Crop Soil Sci., Mich. State Univ., E. Lansing, MI 48824
Len Petroff
Affiliation:
Dep. Crop Soil Sci., Mich. State Univ., E. Lansing, MI 48824
Richard Burow
Affiliation:
Midland, MI 48686
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Abstract

A greenhouse study was designed to evaluate a series of silicone adjuvants for increasing efficacy and rainfastness of Na-acifluorfen, isopropylamine-glyphosate, and Na-bentazon on velvetleaf and common lambsquarters. Silicone adjuvants were identified that increased both herbicide efficacy and rainfastness at 0.9 to 1.2 L ha-1. Specificity of adjuvants for specific target weed species and herbicides was evident. Effective silicone adjuvants were identified that did not increase soybean injury by Na-acifluorfen or Na-bentazon beyond that observed with crop oil concentrate. The efficacy of the best silicone adjuvant did not appear to be solely a function of reduced surface tension of the spray solution.

Keywords

Acifluorfen, 5-[2-chloro-4-(trifluoromethyl)phenoxy]-2-nitrobenzoic acidbentazon, 3-(1-methylethyl)-(1H)-2,1,3-benzothiadiazin-4(3H)-one 2,2-dioxideglyphosate, N-(phosphonomethyl)glycinecommon lambsquarters, Chenopodium album L. ♯4 CHEALvelvetleaf, Abutilon theophrasti Medic. ♯ ABUTHsoybean, Glycine max (L.) Merr.Acifluorfenbentazonglyphosatecrop oil concentrateChenopodium albumAbutilon theophrastiGlycine maxABUTHCHEAL
Type
Research
Information
Weed Technology , Volume 4 , Issue 3 , September 1990 , pp. 576 - 580
Copyright
Copyright © 1990 Weed Science Society of America 

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References

Literature Cited

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