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Efficacy of KIH-485 on Texas Panicum (Panicum texanum) and Selected Broadleaf Weeds in Corn

Published online by Cambridge University Press:  20 January 2017

Gregory L. Steele ,
Peter J. Porpiglia  and
James M. Chandler
Gregory L. Steele
Affiliation:
Department of Soil and Crop Science, Texas A&M University, College Station, TX 77843-2474
Peter J. Porpiglia
Affiliation:
K-I Chemical U.S.A. Inc., 11 Martine Avenue, White Plains, NY 10606
James M. Chandler
Affiliation:
Department of Soil and Crop Science, Texas A&M University, College Station, TX 77843-2474
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Abstract

KIH-485 is an experimental herbicide being evaluated for preemergence weed control in corn. Field experiments were conducted in Burleson County, Texas, in 2003 and 2004 to compare weed control, corn tolerance, and corn yield with various rates of KIH-485 or S-metolachlor. Each herbicide was applied in single preemergence applications at four rates, or in combination with atrazine. KIH-485 at 500 g ai/ha provided better Texas panicum control than S-metolachlor by 9 WAT. KIH-485 or S-metolachlor treatments controlled Palmer amaranth at least 91% at all evaluation dates. In 2003, no other treatment controlled velvetleaf better than 500 g/ha KIH-485. The following year, all KIH-485 rates above 125 g/ha controlled velvetleaf better than any rate of S-metolachlor alone. Moreover, KIH-485 controlled all weed species as good as or better than S-metolachlor plus atrazine, regardless of KIH-485 rate. There was no significant corn injury observed, and grain yield reflected the effects of weed control.

Keywords

AtrazineKIH-485, 3-[(5-difluoromethoxy-1-methyl-3-trifluoromethylpyrazol-4-yl)-methylsulfonyl]-4,5-dihydro-5,5-dimethylisoxazolemetolachlorS-metolachlorPalmer amaranth, Amaranthus palmeri S. Wats# AMAPATexas panicum, Panicum texanum Buckl., # PANTEvelvetleaf, Abutilon theophrasti Medicus, # ABUTHcorn, Zea mays L. # ZEAMACorn weed controlexperimental herbicidepreemergenceWAT, weeks after treatment
Type
Research Article
Information
Weed Technology , Volume 19 , Issue 4 , December 2005 , pp. 866 - 869
Copyright
Copyright © Weed Science Society of America 

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References

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