Control Weeds Early or Risk Yield Loss

Michigan State University six location application timing chart

Early weed control is critical to maximizing yield potential. Weed competition costs yield and research proves just how much. Across six locations, Michigan State University researchers assessed pre-plant burndown applications made at least seven days prior to planting compared with delayed applications of glyphosate at VC (unifoliate) to V1 (one trifoliate) and V3 soybean.

Where applications were delayed until VC/VI, average soybean yield loss was 8.3 bushels per acre. Waiting until V3 resulted in losses of 9.2 bushel per acre. Click here to view the full report.