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This article in AJ

  1. Vol. 83 No. 5, p. 921-925
    Received: June 22, 1989

    * Corresponding author(s):
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SOYHERB-A Computer Program for Soybean Herbicide Decision Making

  1. K. A. Renner  and
  2. J. R. Black
  1. D ep. of Crop and Soil Sciences, Michigan State Univ., East Lansing, MI 48824
    A gricultural Economics, Michigan State Univ., East Lansing, MI 48824



There has been a rapid increase in the number of herbicides and herbicide mixtures registered for use in soybean [Glycine max (L.) Merr.] production. SOYHERB is a computer program developed to assist Cooperative Extension Service personnel, agribusiness, farmers, and teachers in determining herbicide options for soybean production. Tillage practices, atrazine (6-chloro-N-ethyl-N'-(1-methylethyl)-1,3,5-triazine-2,4-diamine) or simazine (6-chloro-N,N'diethyl-1,3,5-triazine-2,4-diamine) use in a previous corn crop, soil type and percentage of organic matter, soil pH, projected crop rotation plans, method of herbicide application, and weed species and weed pressure are entered by the user. SOYHERB generates herbicide programs and their cost per acre that provide excellent control of all weed species at the weed pressures indicated. Fair (80–90%) weed control options may also be generated. Additional screens describe control of perennial weeds, a summary of herbicide premixes, and a table listing the maximum height of broadleaf weeds controlled by postemergence herbicides. Data can be saved for future reference. A computer capable of running MS-DOS or PC-DOS version 2.1 or greater with a minimum of 512K bytes of RAM is required.

Acknowledgment is made to the Michigan Agric. Exp. Stn. for support of this research.

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