At harvest this year, watch for patches of pigweeds, which are quickly multiplying across Ohio. A campaign dubbed “No Pigweed Left Behind” is aimed at encouraging farmers to stop those weeds […]
A team including evolutionary biologists from the University of Toronto have identified the ways in which herbicide-resistant strains of an invasive weed named common waterhemp have emerged in fields of […]
As harvest approaches, Iowa State University will conduct a statewide survey to collect waterhemp seeds produced by plants in corn/soybean fields as well in field edges.
Preharvest herbicide treatments are primarily intended to suppress/kill and desiccate weeds that can make harvest more difficult. Products with contact activity will cause faster desiccation and leaf drop of weeds […]
The world of soybean herbicide resistance traits has gotten more complex over the past several years. The good news is that we have new options for control of herbicide-resistant weeds, […]
Palmer amaranth’s resistance to PPO-inhibiting herbicides, a group of chemicals that disrupt chlorophyll synthesis, is especially problematic with glyphosate already out of the picture. Farmers had been turning to PPO-inhibitors […]
As farmers enter harvest season, let’s remember that the work isn’t done just because the crop is out of the field. Planning efforts for next year are already underway and […]
The current approach to weed management in Iowa is at risk due to rapid expansion of herbicide-resistant weeds. In order to preserve the efficacy of herbicides two things must happen.
Now is a great time to scout for Palmer amaranth (Amaranthus palmeri) in Iowa crop fields. As of late 2018, this species had been identified in over half of Iowa’s […]
If you don’t already have to deal with waterhemp or Palmer amaranth, you don’t want it. Neither one of these weeds is easy to manage, and both can cause substantial […]