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Broadleaf Weed Control in Corn (Zea mays) and Soybean (Glycine max) with CGA-248757 and Flumiclorac Alone and in Tank Mixtures

Published online by Cambridge University Press:  20 January 2017

Jason C. Fausey  and
Karen A. Renner
Jason C. Fausey
Affiliation:
Department of Crop and Soil Sciences, Michigan State University, East Lansing, MI 48824-1325
Karen A. Renner*
Affiliation:
Department of Crop and Soil Sciences, Michigan State University, East Lansing, MI 48824-1325
*
Corresponding author's E-mail: renner@pilot.msu.edu.
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Abstract

Broadleaf weed control with postemergence applications of CGA-248757 and flumiclorac applied alone and in tank mixtures was evaluated in greenhouse and field studies. In greenhouse studies velvetleaf, common lambsquarters, redroot pigweed, common ragweed, common cocklebur, eastern black nightshade, and wild mustard shoot weight were reduced by 50% from 0.1, 2.9, 0.9, 1.1, 0.8, 0.4, and 1.2 g/ha of CGA-248757 and 0.7, 3.0, 2.4, 3.3, 3.0, 3.4, and 74.1 g/ha of flumiclorac, respectively. Under greenhouse conditions, tank mixtures of CGA-248757 or flumiclorac with atrazine, bentazon, bromoxynil, dicamba, halosulfuron, imazethapyr, lactofen, primisulfuron plus prosulfuron, or 2,4-D increased velvetleaf, common lambsquarters, redroot pigweed, or common ragweed control 14 d after treatment (DAT) when compared with the control provided by atrazine, bentazon, bromoxynil, dicamba, halosulfuron, imazethapyr, lactofen, primisulfuron plus prosulfuron, or 2,4-D applied alone. In field studies, adding CGA-248757 or flumiclorac to atrazine, bentazon, bromoxynil, dicamba, halosulfuron, imazethapyr, lactofen, CGA-277476, primisulfuron plus prosulfuron, or 2,4-D increased crop injury 3 DAT, but there was no reduction in corn or soybean yields as a result. In corn, tank mixtures of CGA-248757 or flumiclorac plus atrazine, dicamba, or 2,4-D increased velvetleaf control compared with treatments without CGA-248757 or flumiclorac. Tank mixtures of CGA-248757 or flumiclorac with primisulfuron plus prosulfuron increased common lambsquarters control compared with primisulfuron plus prosulfuron alone. Similarly, in soybean CGA-248757 or flumiclorac tank mixtures with bentazon or CGA-277476 increased control of redroot pigweed, and tank mixtures with lactofen increased common lambsquarters control. However, season-long broadleaf control in soybean with bentazon, lactofen, and CGA-277476 tank mixtures with CGA-248757 or flumiclorac did not provide acceptable weed control. Compared with imazethapyr alone the addition of CGA-248757 and flumiclorac improved soybean yield and provided season-long eastern black nightshade, common lambsquarters, redroot pigweed, and common ragweed control.

Keywords

Atrazinebentazonbromoxynildicambaflumiclorachalosulfuronimazethapyrlactofenprimisulfuronprosulfuron2,4-Dcommon cocklebur, Xanthium strumarium L. # XANSTcommon lambsquarters, Chenopodium album L. # CHEALcommon ragweed, Ambrosia artemisiifolia L. # AMBELeastern black nightshade, Solanum ptycanthum Dun. # SOLPTredroot pigweed, Amaranthus retroflexus L. # AMAREsoybean, Glycine max (L.) Merr. Conrad # GLYMAvelvetleaf, Abutilon theophrasti Medik. # ABUTHwild mustard, Brassica kaber (D.C.) L.C. Wheeler # SINARAcifluorfenantagonismchlorimuronDigitaria sanguinalisglyphosateherbicide interactionnicosulfuronprotoxSetaria faberisethoxydimSorghum bicolorthifensulfuronCOC, crop oil concentrateDAP, days after plantingDAT, days after treatmentGR50, 50% growth reductionNIS, nonionic surfactantPOST, postemergenceprotox, protoporphyrinogen oxidaseUAN, 28% urea ammonium nitrate
Type
Research
Information
Weed Technology , Volume 15 , Issue 3 , September 2001 , pp. 399 - 407
Copyright
Copyright © Weed Science Society of America 

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