Have you had problem weeds slipping through your snap or dry bean weed control program? Have lambsquarters, ragweed, hairy or Eastern black nightshade, nutsedge, etc, been escaping? Herbicide choice and rate, application timing, soil or foliar application, rainfall and temperature near the time of application, soil organic matter, clay/silt content, and moisture, etc. can all affect how well herbicides work. Some bean classes are more sensitive to bean phytotoxicity/damage than others. Some herbicide residues last a long time in soils and there are restrictions on what crops can be planted 8, 10 or 12 months after the application.The 2015 update to the Herbicide for Snap and Dry Bean Weed Control chart includes information on all these factors and will help you choose the best herbicide programs for your fields.
2015 Herbicides for Snap and Dry Bean Weed Control (pdf; 85KB)