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Glyphosate for Johnsongrass (Sorghum halepense) Control in No-Till Sorghum (Sorghum bicolor)

Published online by Cambridge University Press:  12 June 2017

Steven M. Brown ,
James M. Chandler  and
John E. Morrison Jr.
Steven M. Brown
Affiliation:
Soil and Crop Sci. Dep., Texas A&M Univ., College Station, TX 77843
James M. Chandler
Affiliation:
Soil and Crop Sci. Dep., Texas A&M Univ., College Station, TX 77843
John E. Morrison Jr.
Affiliation:
USDA-ARS, P.O. Box 6112, Temple, TX 75603
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Abstract

Field experiments were conducted to evaluate johnsongrass control in no-till grain sorghum with glyphosate treatments applied in mid-June, late July, and mid-September before planting grain sorghum the following spring. Mid-June applications provided the best johnsongrass control. Ammonium sulfate enhanced the activity of glyphosate for only the late-July applications. In separate experiments, herbicide systems comprised of fall applications of glyphosate and/or spring applications of foliar and residual herbicides were evaluated. Fall applications of glyphosate provided superior johnsongrass control and grain sorghum yields.

Keywords

Glyphosate, N-(phosphonomethyl)glycinejohnsongrass, Sorghum halepense (L.) Pers. #3 SORHAgrain sorghum, Sorghum bicolor (L.) Moench.wheat, Triticum aestivum L.Ammonium sulfateconservation tillagerotation
Type
Weed Control and Herbicide Technology
Information
Weed Science , Volume 36 , Issue 4 , July 1988 , pp. 510 - 513
Copyright
Copyright © 1988 by the Weed Science Society of America 

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References

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