Effective on annual broadleaf and grassy weeds. Timing important, especially for grasses. Might need to consider spot spraying wild oats before spraying the entire field. Aerial application equipment must be properly calibrated and product must be applied in 5 or more gallons of water per acre. All other conditions from the original authorization still apply.
Growth starts slowly but soon occurs rapidly.
Effectiveness and crop injury problems can be attributed to herbicide application to weeds and crops that are too large. Most postemergence herbicide labels list the ranges of weed and crop heights over which herbicide effectiveness will be maximized and crop injury will be minimized. However, the need for a timely herbicide application to maximize effectiveness and to minimize weed-crop interference is important. For example, in the Roundup Ready corn system, the glyphosate label states that theherbicide should first be applied when weeds are 4 inches in height. Under most spring and early summer cropping conditions it takes approximately four weeks for foxtail to reach 4 inches in height and approximately six weeks for the foxtail to reach 8 inches in height.