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Incorporating Foramsulfuron into Annual Weed Control Systems for Corn

Published online by Cambridge University Press:  20 January 2017

Jeffrey A. Bunting ,
Christy L. Sprague  and
Dean E. Riechers
Jeffrey A. Bunting
Affiliation:
Department of Crop Sciences, University of Illinois, Urbana, IL 61801
Christy L. Sprague*
Affiliation:
Department of Crop Sciences, University of Illinois, Urbana, IL 61801
Dean E. Riechers
Affiliation:
Department of Crop Sciences, University of Illinois, Urbana, IL 61801
*
Corresponding author's E-mail: sprague1@msu.edu
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Abstract

Field studies were conducted in 2000, 2001, and 2002 at Brownstown, DeKalb, Perry, and Urbana, IL, to evaluate weed control and corn tolerance from postemergence (POST) applications of foramsulfuron in sequential and total-POST herbicide programs. Foramsulfuron applied alone controlled giant foxtail, fall panicum, and redroot pigweed 88, 99, and 99%, respectively, 28 d after treatment (DAT), which was comparable with the standard treatment of nicosulfuron. However, control of common cocklebur, velvetleaf, and common lambsquarters was significantly higher with foramsulfuron compared with nicosulfuron. Sequential herbicide programs of atrazine, S-metolachlor, or isoxaflutole applied preemergence (PRE) followed by a POST application of foramsulfuron provided greater than 85% control of giant foxtail, fall panicum, common cocklebur, velvetleaf, common waterhemp, and redroot pigweed. Of the sequential herbicide treatments, atrazine applied PRE followed by a POST application of foramsulfuron provided the greatest Pennsylvania smartweed control. A PRE application of either atrazine or isoxaflutole was needed before a POST application of foramsulfuron to control common lambsquarters. POST tank mixtures of foramsulfuron with atrazine, dicamba, and dicamba plus diflufenzopyr improved control of Pennsylvania smartweed, common cocklebur, velvetleaf, common lambsquarters, and common waterhemp when compared with foramsulfuron applied alone. The tank mixture of foramsulfuron with mesotrione improved control of all species, except Pennsylvania smartweed, common lambsquarters, and common cocklebur. Foramsulfuron tank mixtures with carfentrazone did not improve control of any weed species to commercial acceptance. Adjuvant selection was important for POST tank mixtures. Control of giant foxtail and fall panicum was reduced when atrazine was tank mixed with foramsulfuron and crop oil concentrate (COC). However, when methylated seed oil (MSO) was added to the atrazine–foramsulfuron tank mixture instead of COC, giant foxtail and fall panicum control were similar to foramsulfuron applied alone.

Keywords

Atrazinecarfentrazonedicambadiflufenzopyr, 2-[1-[[[(3,5-difluorophenyl)amino]carbonyl]hydrazono]ethyl]-3-pyridinecarboxylic acidforamsulfuron, 2-[[[[(4,6-dimethoxy-2-pyrimidiny)amino]carbonyl]amino]sulfonyl]-4-(formylamino)-N,N-dimethylbenzamideisoxaflutolemesotrioneS-metolachlorcommon cocklebur, Xanthium strumarium L. # XANSTcommon lambsquarters, Chenopodium album L. # CHEALcommon waterhemp, Amaranthus rudis Sauer. # AMATAfall panicum, Panicum dichotomiflorum Michx. # PANDIgiant foxtail, Setaria faberi Herm. # SETFAPennsylvania smartweed, Polygonum pennsylvanicum L. # POLPYredroot pigweed, Amaranthus retroflexus L. # AMAREvelvetleaf, Abutilon theophrasti Medicus # ABUTHcorn, Zea mays L.Antagonismtank mixturetotal-POSTALS, acetolactate synthase (EC 4.1.3.18)COC, crop oil concentrateDAT, days after treatmentMSO, methylated seed oilNIS, nonionic surfactantPOST, postemergencePRE, preemergenceUAN, urea ammonium nitrate
Type
Research Article
Information
Weed Technology , Volume 19 , Issue 1 , March 2005 , pp. 160 - 167
Copyright
Copyright © Weed Science Society of America 

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