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This article in AJ

  1. Vol. 86 No. 1, p. 66-72
     
    Received: Feb 8, 1993
    Published: Jan, 1994


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doi:10.2134/agronj1994.00021962008600010013x

Interrow Cultivation to Reduce Herbicide Use in Corn following Alfalfa without Tillage

  1. Douglas D. Buhler ,
  2. Jerry D. Doll,
  3. Richard T. Proost and
  4. Mark R. Visocky
  1. Dep. of Agronomy, Univ. of Wisconsin, Madison, WI 53706

Abstract

Abstract

Information on integrated weed management systems for conservation tillage systems is needed so that producers can minimize the environmental impacts of crop production without sacrificing profitability. Our objective was to evaluate reduced levels of preemergence herbicides in combination with interrow cultivation for weed control in corn (Zea mays L.) planted into an unfilled, deteriorated alfalfa stand treated with glyphosate [N-(phosphonomethyl)glycine] the previous fall. Fall application of glyphosate controlled 97% of the perennial vegetation without additional treatment the following spring. Atrazine [6-chloro-N-ethyl-N'-(l-methylethyl)-l,3,5-triazine-2,4-diamine] at 1.1 kg a.i. ha−1 or cyanazine (2-[[4-chloro-6-(ethylamino)- l,3,5-triazin-2-yl]amino]-2-methylpropanenitrile) at 2.2 kg a.i. ha−1 applied within 1 d after corn planting greatly reduced weed densities

Joint contribution of the USDA-ARS Plant Sci. Res. Unit, St. Paul, MN; Wisconsin Agric. Exp. Stn., Madison, WI; and the Minnesota Agric. Exp. Stn., St. Paul, MN. Univ. Minnesota Agric. Exp. Stn. Journal Paper 20,258.

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