In-Furrow Insecticide Options Peanut Notes No. 28 2020

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At Plant Insecticide Thoughts

Rick Brandenburg

Extension Entomologist

While planting is still several weeks away, the decision for what products to use is probably cast in stone. We have a number of good products available including the AgLogic (aldicarb) product, the AMVAC Thimet or phorate, Admire Pro and Velum Total. We’ve had good luck with all of these for many years now. This past year we saw a modest decrease in performance for the Admire Pro and Velum Total in our trials. This may have been the result of a very warm May. Both are neonic insecticides and there has been concern over the resistance that thrips are starting to show against this group of products. I do not expect to see any “failures” this year, but we do need to watch fields treated with these products and make sure they are still performing well.

We also need to keep in mind that there was an increase in the presence of Tomato Spotted Wilt Virus (TSWV) infected plants in the Southeast last year. It appears there were even more plants that were asymptomatic, but we did not check for the here in NC. My reason for bringing this up is that for quite a few years, we have not had a lot of TSWV. There are several reasons why including resistant varieties and the use of appropriate cultural practices that help limit its occurrence. The virus is still around and if farmers starting using practices such that favor the virus, then it will become more abundant. The factors that influence TSWV are all found in 2020 Peanut Information or on this portal. The TSWV Risk Index helps farmers decide which practices to reduce risk.