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In-Furrow Terbufos Reduces Field and Sweet Corn (Zea mays) Tolerance to Nicosulfuron

Published online by Cambridge University Press:  12 June 2017

Cathy A. Morton
Affiliation:
Crop Weed Sci. Dep., North Dakota State Univ., Fargo, ND 58105 Dep. Agron., Univ. Wisconsin, Madison, WI 53706
R. Gordon Harvey
Affiliation:
Dep. Agron., Univ. Wisconsin, Madison, WI 53706
James J. Kells
Affiliation:
Dep. Crop Soil Sci. and Pestic. Res. Cent., Michigan State Univ., East Lansing, MI 48824
Douglas A. Landis
Affiliation:
Dep. Entomol. and Pestic. Res. Cent. Michigan State Univ., East Lansing, MI 48824
William E. Lueschen
Affiliation:
Univ. Minnesota, Southern Exp. Stn., Waseca, MN 56093
Vincent A. Fritz
Affiliation:
Univ. Minnesota, Southern Exp. Stn., Waseca, MN 56093

Abstract

Field experiments were conducted in Michigan, Minnesota, and Wisconsin in 1990 to explore interactions between nicosulfuron applied POST and terbufos insecticide at 0.06 or 0.11 g ai/m of row applied in-furrow on ‘Pioneer 3751’ field corn and ‘Jubilee’ sweet corn. Nicosulfuron at 0, 70, and 140 g ai/ha plus nonionic surfactant and 28% nitrogen fertilizer was applied to both corn types. Field corn response to nicosulfuron and terbufos was similar at all locations, whereas sweet corn injury varied with location. Nicosulfuron injured field corn more when applied at the four-leaf than the three-leaf stage. Injury to both corn types increased as nicosulfuron rate increased or when applied following terbufos. Nicosulfuron at 140 g/ha without terbufos did not reduce yield of either corn type; however, corn previously treated in-furrow with terbufos reduced yield.

Type
Research
Copyright
Copyright © 1994 by the Weed Science Society of America 

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