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Winter Annual Weed Control with Fall-Applied Corn (Zea mays) Herbicides

Published online by Cambridge University Press:  20 January 2017

Ronald F. Krausz ,
Bryan G. Young  and
Joseph L. Matthews
Ronald F. Krausz*
Affiliation:
Department of Plant, Soil, and General Agriculture, Southern Illinois University, Carbondale, IL 62901-4415
Bryan G. Young
Affiliation:
Department of Plant, Soil, and General Agriculture, Southern Illinois University, Carbondale, IL 62901-4415
Joseph L. Matthews
Affiliation:
Department of Plant, Soil, and General Agriculture, Southern Illinois University, Carbondale, IL 62901-4415
*
Corresponding author's E-mail: rkrausz@siu.edu
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Abstract

Field studies were conducted during the 2000 to 2001 growing seasons to evaluate winter annual weed control and crop tolerance with fall-applied herbicides in corn at Belleville, IL. Atrazine, simazine, and rimsulfuron plus thifensulfuron applied in the fall controlled mouseear chickweed, henbit, and Carolina foxtail 93% or greater at planting the following spring. Flumetsulam controlled mouseear chickweed and henbit 98 and 93%, respectively, at planting. Metribuzin controlled mouseear chickweed and henbit 100 and 97%, respectively. CGA-152005 controlled mouseear chickweed, henbit, and wild garlic 93 to 100%. CGA-152005 provided the greatest control of wild garlic, with control ranging from 94 to 100% at planting. CGA-152005 plus simazine controlled 99 to 100% of all winter annual weeds evaluated. Reducing winter annual weed vegetation did not increase soil temperatures at 5-cm depth in May. CGA-152005 caused discoloration and height reduction of corn. CGA-152005 at the highest rate (60 g ai/ha) reduced corn plant height by 7% and grain yield by 8%.

Keywords

AtrazineCGA-152005, 1-(4-methoxy-6-methyl-triazin-2-yl)-3-[[2-(3,3,3-trifluoropropyl)-phenylsulfonyl]]-ureaflumetsulammetribuzinrimsulfuronsimazinethifensulfuronCarolina foxtail, Alopercurus carolinianus Walt. # ALOCAhenbit, Lamium amplexicaule L. # LAMAMmouseear chickweed, Cerastium vulgatum L. # CERVUwild garlic, Allium vineale L. # ALLVIcorn, Zea mays (L.) ‘Pioneer 33G28 LL’Discolorationheight reductionpreemergenceDAP, days after plantingDAT, days after treatmentPOST, postemergence
Type
Research
Information
Weed Technology , Volume 17 , Issue 3 , September 2003 , pp. 516 - 520
Copyright
Copyright © Weed Science Society of America 

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