It seems that fall armyworms have gotten a running start in recent years. This species does not overwinter in Tennessee, but it may survive warm winters in the extreme southern areas of coastal states during mild winters. It migrates into Tennessee each year. Often, fall armyworms don’t show in substantial numbers until late July or August. However, they are being found Continue reading
Although not a major pest, the threecornered alfalfa hopper (TCAH) causes occasional damage by girdling the main stems of seedling plants (typically those < 10 inches tall). They will feed around the perimeter of the stem with their beak, eventually creating a swollen callus. By itself, this injury does not affect yield, but Continue reading
Please see the update at the bottom of this article …
Every so often, I get questions about reducing fire ant mounds in reduced-tillage soybean fields, particularly from the southern counties of the state where this occurs most commonly. Fire ants enjoyed our mild winter, so I have had a couple of questions already. This insect causes problems during harvest when Continue reading
They’re back, but they don’t scare me! It is very unusual to see economic damage from Japanese beetles in cotton, soybean, or corn. They may cause defoliation in all crops. I’ve never seen enough defoliation in cotton or corn to justify treatment. On a few occasions, I’ve seen enough defoliation in soybean to catch my attention. They will hang around for a while, so in combination with other defoliators, they may cause enough damage Continue reading
There have been a few reports of good sized (>12”) horseweed (marestail) putting on significant new growth after an Engenia or Xtendimax application. Though these occurrences have been relatively few they are a concern as the horseweed appears to be growing back with a vengeance (Picture right).
As we go into the double crop soybean planting stretch these reports are a good reminder to apply a good burndown on horseweed prior to even Xtend soybeans emerging. Continue reading
I blogged several weeks back on the poor Palmer amaranth control with Engenia in a field in Fayette County. We followed up by applying another application of Engenia on the still green Palmer 14 days after the first application. I am glad to report that all the Palmer amaranth were controlled 14 days after the second Engenia application. Continue reading
The University of Tennessee Variety Testing team is pleased to announce the launch of a new search tool for yield and agronomic data for corn grain and silage, cotton, soybeans and wheat. Continue reading
The question of the week is will the Palmer amaranth die that is still green after an Engenia or Xtendimax application? The situation is that many pigweeds in some fields have not grown after an Engenia or Xtendimax application but still remain green going on 10 days or more after the application. The question is will these pigweeds start to regrow? Continue reading