Wheat harvest this year had many folks too busy to drop by the UT weed tour held back in June. So we thought we would bring part of the weed tour to you. We have put together some short videos that hit some of the high points on Palmer amaranth management in soybean that were discussed at the 2013 weed tour. The research highlighted here as well as the videos were funded by the United Soybean Board and the Tennessee Soybean Promotion Board. Thanks also goes to Ginger Rowsey for putting these videos together.
Soybean population and row width effect on Palmer amaranth control.
First year evaluation of cover crop type on Palmer amaranth control in soybean.
Post alone herbicide application compared to Pre followed by Post herbicide applications.
Liberty herbicide application timing effect on Palmer amaranth control.
I enjoyed watching all four videos.
You sprayed a burn down to kill the cereal rye and wheat. Have you considered letting the cereal rye get taller and using a roller-crimper instead? The mat of cereal rye stalks with this approach may keep the topsoil cooler and wetter resulting in planting spring crops later. I have read research summaries of work where Dr. Culpepper used a similar integrated approach to managing pigweed but wonder if letting the cereal rye get too tall here may cause a whole different set of problems?
Do you have any thoughts on this?
Richard
Thanks for the comments. Yes I visit with Dr. Culpepper frequently and their situation is different than ours in two fundemental ways. First they never have winter so their ryegrass will get 6′ to 8′ tall by the spring. We have looked at rye for a number of years here as well and even planted earlier than what most farmers can plant it at best we get 3′ tall rye. A couple of the colder winters it only got about 2′ tall.
Second they do roll their rye but they also strip till into the rolled rye to get seed soil contact. If we strip till your Haywood county fields you would have gullys down each strip. So we have tried get around that by 1 planting into standing rye and 2 in another experiment strip burning down 3 months ahead of time with an rtk system and then planting back into those strips. Then burndown the whole test at the normal time. The strip burndown has looked good in the first year of testing.
Larry