Farmers should carefully evaluate their herbicide choices before spraying any planted soybean fields that didn’t get their preemergence (PRE) herbicide on ahead of the rain.

In areas where soybeans are still in the field and weeds still have some gree in them, there is a potential for problems when the combine starts rolling, says Penn State University weed expert Bill Curran.

Soybean vein necrosis is a newly identified viral disease in soybean fields that has the potential to reduce yields, according to Ioannis “Yannis” Tzanetakis, assistant professor of plant pathology in the University of Arkansas Division of Agriculture.