While the extended hot, dry weather in Ohio recently might mean that weeds aren’t growing as fast as they would in more moist conditions, the weather can still make weed management more challenging for corn and soybean growers, an Ohio State University Extension weed specialist says.
The abnormally dry conditions affect the germination, growth, hardiness and competitive ability of weeds, but they also complicate weed control efforts, Mark Loux said.
“The biggest thing that happens to weeds when the weather conditions continue to be hot and dry is that the weeds get tougher to control,” he said. “Under good moisture, weeds tend to be more sensitive to herbicides.
“Under extended dry conditions, weeds grow more slowly and also develop thicker cuticles on the leaf surfaces, which has the overall effect of reducing herbicide movement into and throughout the plant.”
While growers often wonder if they should wait for rain to treat weeds with herbicides, Loux said, the most important thing is to make sure they select the right herbicide treatment for the weeds they are trying to control.… Continue reading Read More »