Soybean growers continue to look for ways to decrease input costs through herbicide program
selection, unfortunately,
herbicide resistant weeds continue to affect yield while new resistant biotypes continue to evolve
due to limited post- emergent herbicide options. Modern soybean genetics, such as glyphosate (i.e.
Roundup), dicamba (i.e. Xtendimax), glufosinate (i.e. Liberty), 2, 4-D, and HPPD (i.e. Callisto)
tolerant soybeans, provide herbicide tolerance to increase post- emergence weed control options.
However, misapplication and overuse of post-emergent herbicides has led to selection pressure in
waterhemp populations. Soil applied residuals are effective as the herbicide is absorbed into the
weed at the most vulnerable stage of growth, emergence.
This grant focuses specifically on providing an inclusive industry comparative program in target
weeds waterhemp and giant ragweed and the objectives will be achieved through four studies included
in the body of this grant: 1) Industry Programs on Waterhemp Control in Soybean; 2) Industry
Programs on Waterhemp Control in Corn Utilizing Different Modes of Action than in Soybean; 3)
Industry Programs on Giant Ragweed Control in Soybean; 4) Industry Programs on Giant Ragweed
Control in Corn Utilizing Different Modes of Action than in Soybean. The studies have the same
objectives with the exception of the target weed and crop which will impact treatment entries from
industry. Each industry partner will receive two entry slots per trial. Research will be conducted
on the research farm in Renville, MN,
with seed and chemical provided by supporting industry partners.