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G78-390 Right Crop Stage For Herbicide Use Alfalfa, Sugarbeets, Soybeans, And Fieldbeans (Revised January 1987), Robert G. Wilson, Alex Martin

University of Nebraska-Lincoln Extension: Historical Materials

If you are using herbicides on alfalfa, sugarbeets, soybeans, or fieldbeans, information in this Guide will help you apply them at the proper time for best weed control with a minimum of crop injury. Proper timing of postemergence herbicides is essential to achieve maximum weed control with minimum crop injury. As field crops grow and mature, their tolerance to herbicides changes. As a general rule, annual and biennial weeds are more susceptible to postemergence herbicides when they are in the seedling stage, becoming increasingly difficult to control as they mature. The grower is thus faced with the problem of when …