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Preemergence Control of Italian Ryegrass (Lolium multiflorum) in Wheat (Triticum aestivum)

Published online by Cambridge University Press:  20 January 2017

Ronald L. Ritter  and
Hiwot Menbere
Ronald L. Ritter*
Affiliation:
Department of Natural Resource Sciences and Landscape Architecture, University of Maryland, College Park, MD 20742-5821
Hiwot Menbere
Affiliation:
Department of Natural Resource Sciences and Landscape Architecture, University of Maryland, College Park, MD 20742-5821
*
Corresponding author's E-mail: rr24@umail.umd.edu.
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Abstract

Field studies were conducted from 1998 to 2000 in Beltsville, MD, to evaluate the effects of preemergence (PRE) applications of BAY FOE 5043 + metribuzin, s-metolachlor, and diclofop on crop injury, yield, and control of diclofop-tolerant Italian ryegrass in winter wheat. No injury was observed in 1999. In 2000, minor stunting of wheat plants was observed where high rates of BAY FOE 5043 + metribuzin and s-metolachlor were utilized. Wheat plants outgrew the stunting and grain yields were not affected. High rates of BAY FOE 5043 + metribuzin and s-metolachlor provided equally effective Italian ryegrass control in 1999, averaging 85% or greater in June. In 2000, all rates of BAY FOE 5043 + metribuzin provided 93% or greater Italian ryegrass control, whereas s-metolachlor at 0.43 kg/ha or greater provided 85% Italian ryegrass control or greater when evaluated in June. In 1999, wheat yields from plots treated with BAY FOE 5043 + metribuzin, or s-metolachlor at 0.43, 0.56, or 0.84 kg/ha, were higher than from the nontreated control. In 2000, all wheat yields from plots treated with BAY FOE 5043 + metribuzin and s-metolachlor were higher than from the nontreated control.

Keywords

BAY FOE 5043diclofopmetribuzins-metolachlorItalian ryegrass, Lolium multiflorum Lam. #3 LOLMUwheat, Triticum aestivum L. ‘Jackson’Herbicide-resistant weedsEP, early postemergencePOST, postemergencePRE, preemergence
Type
Research
Information
Weed Technology , Volume 16 , Issue 1 , March 2002 , pp. 55 - 59
Copyright
Copyright © Weed Science Society of America 

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References

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