AgFax Southern Grain - Louisiana

by AgFax Media LLC,


Worm treatments continue, mostly for bollworms. But loopers – both soybean and cabbage – are becoming more apparent in places.

Velvetbean caterpillars (VBC) have turned up in parts of the region where they're not typically part of the pest spectrum. Our contacts continue to say that loopers and VBC are appearing earlier than usual, something we also heard in 2015. In places, the mix also may include saltmarsh caterpillars, green cloverworms and other species.

Stink bug applications are going out to varying degrees through the region. The redbanded stink bug remains the predominate pest through much of Louisiana, although a few treatments have been made in Mississippi specifically for redbanded. Bean leaf beetles hare required attention on a scattered basis.

Corn harvest has widened in both the Southeast and Midsouth, and more corn has hit black layer. Crop advisors are starting to drop some early planted soybeans.


David Kerns, Entomologist, Louisiana State University, Macon Ridge Research Station:

"We still have a lot of bollworms in soybeans after a big flight and egg lay. Soybean loopers are just now coming on, too, and some treatments have been made in south Louisiana and a little in our central parishes. So far, I'm not picking them up in north Louisiana, although I expect that to change next week.

"As soybeans move towards maturity, they're becoming more attractive to stink bugs, and those numbers are increasing. We're seeing greens, southern greens, browns and redbanded in north Louisiana. As you move south, all that transitions to only redbanded, since they tend to displace other species as the season progresses.

"Corn harvest is underway. In grain sorghum, some applications are still going out for sugarcane aphids. In late grain sorghum we're picking up a lot of worms, although most of the crop is past the stage that worms matter."

Travis Vallee, CenLa Ag Services, Pineville, Louisiana:

"Some corn harvest started over the weekend (7/30-31). In places, it's cutting really well, with dryland averages in the 200 bu/acre range. Our dryland milo is doing fairly well. No firm yields yet, but it's mostly over 100 bu/acre.

"In soybeans, we'll probably start paraquat applications soon on some MG 4.8 and MG 4.9 fields. We began getting rains about 10 days ago, and that will save a big part of our bean crop. Some fields went 4 weeks without a rain, although they were planted early and will definitely yield better than beans did last year. In places, we're on our third application for redbanded stink bugs. Last year we sprayed once or maybe twice on some fields."