The changes, requested by pesticide registrants in consultation with those states, are intended to reduce risks from the use of over-the-top dicamba, an herbicide used to control certain types of broadleaf weeds.

While seed companies would lead you to believe growers will be planting dicamba-tolerant soybeans this spring to improve yields or do a better job of controlling weeds, results from a No-Till Farmer survey indicate many will only be doing so to protect their bean crop against potential herbicide drift concerns from neighboring soybean fields.

University research studied the effects of microrates of two dicamba products applied to non dicamba-tolerant soybeans at three growth stages.