By Mark Loux, Ohio State University Extension herbicide specialist
There is still time to control weeds in fields that were not planted to crops this year due to wet weather. A major goal of any control implemented at this time should be prevention of seed production by summer annual weeds. It’s not always necessary or practical to kill weeds, especially large ones, to prevent seed production. Summer annual weeds that are mowed now, or substantially affected by herbicides, should produce few seed even if they are able to still reach maturity. The choices for control are probably limited to mowing or herbicides at this point. Tillage is certainly an option, but control of the large weeds in many fields would require more than a shallow tillage pass.
As much as we would like for growers to avoid glyphosate applications in order to minimize further selection for glyphosate-resistant weeds, a glyphosate-based herbicide program may still make the most sense here.… Continue readingRead More »