1. At each site, the project will be incorporated into public field days for farmers and ag professionals. This project will also be highlighted during small group tours that are available to be scheduled upon request of small groups of farmers, retailers, or industry representatives.
2. In-season updates will be provided via extension crop news blog, twitter posts, and on the strategic farming webinar series.
3. At season’s end the results will be summarized and published in a research report, to be posted on the web.
4. Results will be disseminated via traditional extension activities including winter meetings, workshops, webinars, and newsletters/blogs.
5. We will post a short video on the crops YouTube channel.
6. We will cover this project/subject on the Gopher Coffee Shop Podcast
7. Results will be incorporated into a “Best Practices” segment on the Farm Connections television program. The Farm Connections program airs on KSMQ out of Austin, MN and Pioneer TV out of Granite Falls, MN.
8. We will explore opportunities to collaborate with some of the Northern Soybean Marketing efforts on foreign material in soybean grain and export implications.

An eighteen-treatment randomized complete block design experiment will be conducted at Rochester, MN and the Research and Outreach Center in either Waseca or Rosemount, MN. Fields will be prepared, and herbicide tolerant volunteer corn will be incorporated/planted, then soybeans will be planted in 30-inch rows. A preemergence herbicide will be sprayed at the time of planting and will be followed by an appropriately timed postemergence application to control weeds including the volunteer corn. Weed and volunteer corn control will be visually rated at 7, 14, and 21 days after POST application treatment, and a late season visual assessment will be conducted prior to harvesting plots. Plots will be harvested for grain yield calculations. A phone and email survey will be conducted to determine the costs of various herbicide programs.
Proposed Treatments:
PREEMERGENCE
All treatments will start with a preemergence (e.g. Broadaxe XC) at planting.
POSTEMERGENCE
1. Enlist + Glyphosate + Select Max 6 oz + (AMS & NIS)
2. Enlist + Glyphosate + Select Max 6 oz + Dual + (AMS & NIS)
3. Enlist + Glyphosate + Select Max 9 oz + (AMS & NIS)
4. Enlist + Glyphosate + Select Max 9 oz + Dual + (AMS & NIS)
5. Enlist + Select Max 6 oz + (AMS & COC)
6. Enlist + Select Max 6 oz + Dual + (AMS & COC)
7. Enlist + Select Max 9 oz + (AMS & COC)
8. Enlist + Select Max 9 oz + Dual + (AMS & COC)
9. Enlist + Glyphosate + Assure II 4 oz + (AMS & NIS)
10. Enlist + Glyphosate + Assure II 4 oz + Dual + (AMS & NIS)
11. Enlist + Glyphosate + Assure II 5 oz + (AMS & NIS)
12. Enlist + Glyphosate + Assure II 5 oz + Dual + (AMS & NIS)
13. Enlist + Assure II 4 oz + (AMS & COC)
14. Enlist + Assure II 4 oz + Dual + (AMS & COC)
15. Enlist + Assure II 5 oz + (AMS & COC)
16. Enlist + Assure II 5 oz + Dual + (AMS & COC)
17. Enlist + Glyphosate+ (AMS) fb1 Select Max 6 oz + (COC & AMS)
18. Enlist + Glyphosate + (AMS) fb Assure II 4 oz + (COC & AMS)
1= graminicide in a sequential treatment 5-7 days after initial POST treatment

Update:
A summary of methods and results is attached to progress of work 2. For this progress report I will focus the summary of outreach activities:
4 Field day presentations (approximately 200 farmers and ag professionals)
3 Winter weed management presentations for farmers (approximately 100 farmers)
19 Private applicator workshops (Over 600 farmers)
10 Commercial applicator workshops (900-1,000 applicators working for farmers)
1 Poster North Central Weed Science Society Annual Meeting
1 Poster MN Ag Expo

Farmers using 2,4-D tolerant soybeans need to adjust their spray plans to adequately control volunteer corn. 2,4-D is the main factor causing antagonism and reduced volunteer corn control in the tank-mixes we tested. If grass controlling herbicides (graminicides) are tank mixed with 2,4-D, the farmer must use increased rates of graminicides to overcome herbicide antagonism and insufficient volunteer corn control. A second strategy is to use sequential applications with grass controlling herbicides applied 7 days after application of 2,4-D and glyphosate. With sequential applications we were able to maintain adequate volunteer corn control with lower rates of grass controlling herbicides. A second year of this study has been funded by Minnesota Soybean and the studies have been established at Waseca and Rochester. Once the results have been confirmed we will create a full report with guidelines for growers.