Rice Stink Bug Demonstration Program Results – 2011

As you may recall, we received approval for a Section 18 registration for Tenchu 20SG to control rice stink bug in Louisiana rice. This approval came very late in the season when most of the southern crop was either harvested, or well on it’s way to harvest. Fortunately, we were able to work with a team of county agents to line up some field locations and compare the efficacy of Tenchu 20SG to pyrethroid treatments. Overall, we concluded that either Tenchu 20SG or pyrethroids, when applied appropriately, both provided good control of RSB and prevented grade reductions due to peck. We are continuing to conduct research on rice stink bug thresholds and treatment strategies. I’ll talk about these results at the winter production meetings in 2012.

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Rice stink bug control in second crop rice

This week I’ve received a few calls from consultants about high rice stink bug counts in late-planted rice and second crop. We don’t have recommendations for second crop rice in our publications, largely because this crop has not historically been important enough (economically) to protect. With advances in variety yield potential and improvements in second crop management, the second crop has become important enough to warrant protection (in most situations). We would recommend that if the thresholds for first crop (30 per 100 in first two weeks of heading and 100 per 100 after first two weeks of heading) are exceeded in second crop, then you should consider using an insecticide.

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Bill bugs and chinch bugs reducing rice stands in Calcasieu Parish

Today we scouted fields in Calcasieu Parish which were infested with rice levee bill bugs and chinch bugs.

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Rice water weevils and colaspis in Louisiana rice

On Friday, I headed out to scout rice in Jeff Davis Parish with County Agent Barrett Courville and Consultant Rustin Gilder. We scouted a field where Rustin had found a single colaspis larva. We also discussed rice water weevil management. Rice water weevils are already out and infesting fields in southwest Louisiana. You can watch our scouting videos on colapis and rice water weevil for a refresher on how to scout for these pests of rice.

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Whiteheads in Vermilion Parish – borers, rats and a Friday mystery for you.

We scouted some rice in Vermilion Parish with Fred Cramer and Toby McCown today. Whiteheads had been caused by rats, sugarcane borers and rice stalk borers. This was a good reminder to confirm the cause of damage before making a treatment decision.

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Begin scouting for borers at green ring

Is anybody starting to see borers in the field? They might start to come on as the crop approaches boot. We recommend that you begin scouting for borers at green ring and intensify scouting as plants get closer to or reach early boot stages.

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Pyrethroid spray recommended at Vermilion Parish demo site

This morning I met with County Agent Stuart Gauthier, Rice producer Richard Hardee and Consultant Chuck Greene at the demonstration site in Vermilion Parish just outside of Gueydan.

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2010 rice water weevil demonstration plans – Acadia Parish

Yesterday I met with Mr. Darryl Hoffpauir and Mr. Rustin Gilder to discuss the layout for the location in Rayne, La. This year we will be comparing an untreated check to Dermacor seed treatment, Cruiser seed treatment, and Karate pre-flood followed by Mustang on fertilizer post-flood.

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