6/2/2011 8:09:09 PM
Originally posted April 25, 2011, by Natalie Hummel on Louisiana Rice Insects
I had some technical difficulties with the blog last week, so this posting is a little delayed. Also, before you get into it, I’d like to talk about more insect problems. The dry conditions are continuing to create headaches. I’ve had about 5 more calls about chinch bugs, rice levee bill bugs in rice. Some are reporting successful control with a spray of pyrethroid to control the insects. I would caution you to avoid using an insecticide unless you can confirm the presence of the insect causing injury. There are some mystery problems out there, and it is easy to blame insects in some cases.
The bottom line is that if you can’t find any insects causing injury, then there is no point paying for an insecticide application. I know it is hard to scout in the wind and the dry conditions. Scouting early in the morning will increase your chances of finding chinch bugs in rice. Also, scouting the vegetation of the edges of the field – particularly sweeping grasses with a sweep net – is another good scouting method for chinch bugs. Tomorrow we will be in Vermilion Parish for a morning meeting and a walk with Dr. Saichuk at the verification field. In the afternoon, we will head to Jefferson Davis Parish to scout some of these fields that are/have suffered injury from chinch bugs, rice levee bill bugs, and/or colaspis.
After we found colaspis in Jefferson Davis Parish last week, we headed over to St. Landry to take stand data at Charlie Fontenot’s farm (pictures 1 & 2). We met with Valent company representatives Karen Arthur, John Bordlee and Bill Odle to discuss this location and the other sites. Charlie Fontenot, crop consultant Dean Reed and county agent Vince Deshotel also met us at the field (picture 3). We did not notice any obvious visual differences between treatments, but all treatments looked a little better than the untreated (pictures 4 & 5). We will report the overall stand observations once we have take data at all sites.
All plots are marked with colored flagging, so feel free to contact county agent Vince Deshotel if you’d like to drive by and visit the test site.
We intend to plant our last site – located in Avoyelles Parish – on Wednesday. We will take stand data at the Calcasieu site on Thursday. Busy week of field work ahead!