@bugdocisin

Professor of Entomology at Clemson University. I use X/Twitter for work, but posts are my own.

 SC
clemson.edu/cafls/faculty_staff/profiles/greene4
Joined December 2011
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286Media
Any guesses on what these are on this cotton leaf? I'm pretty sure I know. What do you think? – at South Carolina, USA
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That was quick. Yes!
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Here is what AI (ChatGPT) is predicting for the invasive two-spot cotton leafhopper (cotton jassis) in South Carolina this season. It is basically predicting a repeat of 2025, with jassid populations building in blooming cotton and not being an issue prebloom. We will see. – at South Carolina, USA
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Jassid...not jassis
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So, we have a new insect pest in cotton in the southeastern USA called the two-spot cotton leafhopper, Amrasca biguttula. Found in US Virgin Islands and Pierto Rico in 2023, in FL during 2024, and GA and SC this year. We do not know if it will be yield-limiting yet. We are on it. – at South Carolina, USA
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– at South Carolina, USA
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Simulated insect defoliation at 100% in soybeans at R2. Will it recover or see yield loss? – at South Carolina, USA
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It's hot today in SC! Not a parking lot and parked temperature. That was like 115 degrees. – at South Carolina, USA
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Year 3 of a portion of graduate student Adam Whitfield's PhD research simulating defoliation injury to soybeans and refining treatment thresholds. No injury versus 100% defoliation at late vegetative stage. Yield loss on this early stage extreme defoliation? – at South Carolina, USA
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Seeing a lot of stink bugs in corn. Is it going to be a big stink bug year in cotton and soybeans? – at South Carolina, USA
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Can anyone guess the species that deposited this mass of eggs on a soybean leaf near Blackville, SC? BAW or FAW? We've had both species in our area lately. – at South Carolina, USA
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That's a good guess, but we have been seeing BAW in other local soybean fields, with FAW an issue mostly in grass. I didn't keep the mass to rear out, so it's a mystery! Just wondering if anyone could tell the difference. Thanks for guessing.
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Larva of the silverspotted skipper is a favorite of the "Bug Crew" every year. We never see large numbers of this defoliator, so the rare specimen gets a photoshoot. – at South Carolina, USA
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In honor of "stink bug" month (August) and break dancing at the Olympics, we (the bug crew) proudly present stink bug break dancing (aka a southern green stink bug trying to get back on its feet). No stink bugs were harmed in making this video (it was released). 😅 – at South Carolina, USA
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Easily observed mating green stink bugs and tobacco budworm (TBW) moths this morning in cotton. This was a patch of non-Bt cotton of mine, so TBW eggs and hatching larvae have a chance here. Any TBW in Bt cotton are doomed. Capture of TBW moths in traps increased this past week. – at South Carolina, USA
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Found a lot of soybean loopers, podworms, and beet armyworms in soybeans this morning. – at South Carolina, USA
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Some low-level bollworm injury in 2-gene Bt cotton this week. Seeing about 1 to 2% but not yet at 5% threshold mark. No bollworm damage in 3-gene Bt cotton this week. – at South Carolina, USA
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It's August, so "Stink Bug Month" has started. I'm seeing adults mating, egg masses hatching, nymphs, and boll injury. Quick tip - sort your bolls to be opened by those with and without external lesions, and open those with external lesions first - can speed up field assessment. – at South Carolina, USA
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Time point #1 for simulated insect defoliation in soybeans with PhD student Adam Whitfield. The crew loves "punching" leaflets, while Adam and I handle the other treatments, like the 100% shown. We will have good data after 3 years to calculate EILs and defoliation thresholds. – at South Carolina, USA
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Aphids and spider mites starting to show up quickly. – at South Carolina, USA
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