When used as a context menu, the recommended way of opening the menu is to call popup(). Popup menus for example, a menu that is shown after clicking a button.Context menus for example, a menu that is shown after right clicking.void popup(Item parent, real x, real y, MenuItem item).void popup(real x, real y, MenuItem item).void popup(Item parent, point pos, MenuItem item).void insertAction(int index, Action action).List of all members, including inherited members.Two quick and easy places to look up herbicide labels are I also encourage anyone looking into alternative methods to terminate cover crops to reach out to local resources like your local Iowa State University Extension and Outreach field agronomist or groups like Practical Farmers of Iowa. Read up more on using a roller crimper to terminate cover crops here and here.Īlways look at the herbicide labels for directions and any restrictions for the subsequent crop. The Wisconsin research noted above showed that when combined with roller crimping, the HG 1 herbicide treatments resulted in improved kill, though still not as effective as glyphosate in combination with the roller crimper. One substantial benefit to roller crimping is laying the cover down in an even mat on the ground, which may reduce shading on the crop and could improve weed suppression. While roller crimping can be quite effective at the correct growth stage for cereal rye, it is often less consistent than a glyphosate application, usually requires delayed crop planting, and the equipment can be challenging to procure. Termination using a roller crimper is gaining interest in parts of Iowa. Applications of HG1 products to large cereal grasses often result in a slower death than with glyphosate, and cereal rye remains more upright than when terminated with glyphosate. Researchers have noted mixed success in controlling cereal rye with the HG 1 products, including some new research from University of Wisconsin’s Rodrigo Werle’s lab. These applications are most effective on cereals less than 6 inches tall. Both paraquat and HG 1 products list volunteer cereal grasses on the labels for effective burndown. The addition of metribuzin or atrazine to paraquat will improve its consistency. These products are more likely to be effective when weather conditions are favorable. Research continues to show they provide less consistent control than glyphosate. Researchers have looked at other herbicides such as paraquat, glufosinate, and herbicide group (HG) 1 products like clethodim and quizalofop. I’m often asked about alternative chemicals or different strategies to manage cereal rye in the spring. This addition can also be helpful when broadleaf winter annuals are present. If cereal rye or other grass species are seeded with a legume, inclusion of 2,4-D or dicamba with glyphosate will improve consistency of control of the broadleaf. If you’re applying in particularly challenging conditions, multi-state research shows that the addition of clethodim to glyphosate will improve control, but keep in mind the planting restriction if using that mixture prior to corn. If you’re using a new glyphosate product or adjusting the rate from prior years, use the “Glyphosate math” blog to determine the equivalent rate of the new glyphosate product. should be sufficient to kill a small (60F) day with a 3-5 day forecast that doesn’t get below 40F if possible In the past, we’ve recommended using a 1 lb acid equivalent (a.e.) rate, but this is a generous rate to account for variable spring weather, variation in cover crop size, and the addition of tank mix partners. Herbicidal termination is going to be the most effective method available to most farmers and despite substantial research into alternatives, glyphosate remains the most consistent product to kill grass species.Ĭhoose an appropriate glyphosate rate for the size and condition of the cover crop. This cereal rye cover crop has some tissue remaining green following burndown. Timing is less critical for soybean, but killing the cover crop prior to soybean emergence reduces risk to crop yield. Regardless of when you choose to terminate your cover crop, remember that the best management practice is to terminate 10-14 days ahead of corn planting. While some will let the covers grow for some time yet, those covers in fields going to corn this spring will likely be terminated in the next few weeks. The warmer weather forecast has me thinking about new beginnings and the resurrection of our dormant overwintering cover crops.
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