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Effect of DPX-V9360 and Terbufos on Field and Sweet Corn (Zea mays) Under Three Environments

Published online by Cambridge University Press:  12 June 2017

Cathy A. Morton
Affiliation:
Dep. Agron., Univ. Wisconsin, Madison, WI 53706
R. Gordon Harvey
Affiliation:
Dep. Agron., Univ. Wisconsin, Madison, WI 53706
James J. Kells
Affiliation:
Dep. Agron., Univ. Wisconsin, Madison, WI 53706
William E. Lueschen
Affiliation:
Dep. Crop Soil Sci., and Pestic. Res. Cent., Michigan State Univ., East Lansing, MI 48824
Vincent A. Fritz
Affiliation:
Univ. Minnesota, Southern Exp. Stn., Waseca, MN 56093

Abstract

Field studies were conducted in Michigan, Minnesota, and Wisconsin to explore interactions among DPX-V9360 herbicide applied postemergence, terbufos insecticide applied as an in-furrow treatment, and the environment. Field corn (‘Pioneer 3751’) and sweet corn (‘Jubilee’) were planted with and without an in-furrow application of terbufos. DPX-V9360 was applied postemergence when the corn was in the 4- to 6-leaf stage at 0, 35, 70, 140, and 280 g ai ha-1 with nonionic surfactant and 28% N fertilizer solution. Crop response to DPX-V9360 was similar at all three locations, varying only in magnitude of injury. Crop injury was greater with Jubilee sweet corn than with Pioneer 3751 field corn. Injury to both hybrids increased as DPX-V9360 application rate increased. Application of terbufos increased injury from DPX-V9360 to both hybrids. Significant yield reduction did not occur with either hybrid when DPX-V9360 was applied at rates of 140 g ha-1 or less and no terbufos was applied.

Type
Research
Copyright
Copyright © 1990 by the Weed Science Society of America 

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References

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