Harvest Aid Considerations for Weedy Soybean Fields

There are a lot of weedy soybean fields across Wisconsin this year and the dry conditions are the major culprit. A lack of precipitation reduced the effectiveness of many residual herbicides and drought-affected soybeans were slower to close the canopy. To make matters worse, the dry conditions seem to be accelerating soybean dry down while weeds remain green. In Wisconsin, we usually get a killing frost around early to mid-October. Fields with heavy weed pressure may not be physically harvestable until then. This leaves us with the very real possibility of harvesting too-dry soybeans from fields under heavy weed pressure.

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Authored by: Sam Bibby, Regional Crops & Soils Educator- UW Madison Extension; Dr. Rodrigo Werle, Associate Professor and Extension Cropping Systems Weed Scientist- UW Madison; and Dr. Shawn P. Conley, Professor and Soybean & Small Grains Extension Funded Campus-Based Faculty- UW Madison