Glyphosate for johnsongrass (Sorghum halepense) control in no-till sorghum (Sorghum bicolor)
1988
Brown, S.M. | Chandler, J.M. | Morrison, J.E. Jr
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 plantig 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. Nomenclature: Glyphosate, N-(phosphonomethyl)glycine; johnsongrass, Sorghum balepense (L.) Pers. #3 SORHAgrain sorghum, Sorghum bicolor (L.) Moench.; wheat, Triticum aestivum L.
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