I wrote last week on managing heavy glyphosate-resistant (GR) Palmer amaranth infested fields in a corn rotation. Several have commented that this leads to the next question of how to manage these fields going back into conventional, Roundup Ready or Liberty Link soybeans. Continue reading
The following information was provided by Wade Moder (IPM Institute of North America).
For FY 2012, the USDA Natural Resources Conservation Service (NRCS) has made significant changes to conservation programs to streamline procedures, reduce costs and improve consistency. These changes will impact grower support from the Environmental Quality Incentives Program (EQIP), including for IPM. The following Continue reading
A reminder that the annual Tennessee Grain and Soybean Conference will be held Thursday, February 2nd at the Dyer County Fairgrounds in Dyersburg. Registration begins at 7:45 with the program beginning at 9:00. Program details.
PB 1768, Insect Control Recommendations for Field Crops for Tennessee is available online and includes IPM recommendations for cotton, corn, soybean, sorghum, wheat and pasture (LINK HERE).
PB 1580, 2012 Weed Control Manual for Tennessee is also available and includes information for field and forage crops, harvest aids, and farm ponds (LINK HERE).
Dr. Jim Brosnan, UT turf weed scientist, has just confirmed that annual bluegrass (Poa) he collected from a golf course back in 2010 in West Tennessee is glyphosate-resistant (GR). Continue reading
Potential Herbicide Carryover Needs to be Considered before Planting Wheat. It was not uncommon last year for fomesafen (Flexstar, Rhythm, Dawn, Prefix and Reflex) applications in mid-summer to carry in and injure wheat. According to the label, four months must pass between a fomesafen application and planting wheat this fall. The highest probability of carryover is in fields that have seen little rain this summer. This is another ramification of managing glyphosate resistant Palmer amaranth.
Volunteer Roundup Ready Corn Management. There have been several calls about burning down volunteer Roundup Ready corn before wheat planting. In our research there have only been two herbicide applications that controlled the volunteer corn. One was 40- 48 oz/A of Gramoxone Inteon applied with 0.25% NIS at 15 gal/A. Coverage and rate are critical to make this work. The other option was to use 0.5 oz/A of Finesse which also did a good job plus it provides residual control of ryegrass and many broadleaf weeds. Finesse has been used in Tennessee for about three years now and has for the most part worked well. Of course, like all pres, it works best when it receives a rain 7 to 10 days after application to activate it. However, if it does not get an activating rain the weed control can be inconsistent. One thing to remember is if Finesse is used, only STS soybeans can be planted for double crop in the summer.
Bluegrass Control in Wheat. Continue reading
With corn harvest under way, now is the time to think about postharvest weed control. Just this past year some of our worst glyphosate-resistant Palmer infested soybean and cotton fields were in corn the previous year. In most cases the Palmer amaranth that produced the seed emerged late as the corn was drying down. Often the worst Palmer patches come up in July in partially drowned out areas in a given corn field. Palmer that emerges in July in these areas is often 3 to 4’ tall by harvest time and will easily produce thousands of Palmer seed that will be a problem next year. Continue reading
There are two remaining Soybean Scout Schools scheduled for Tennessee (see below). These are field-side programs designed to give practical training on soybean management including insect, disease and weed control. Each program is 1.5 – 2 hours long. Participants will receive a scouting notebook and a sweep net while supplies last. Directions are Continue reading