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Beige moth resting on a green leaf among foliage

Bollworm Flight Beginning in Some Locations

Two bits of information today tell me that we are likely beginning the main bollworm flight of the year. First, a consultant called finding eggs in Bollgard II cotton. Secondly, light trap captures…

Dried brown seed pod with small hole on stem among leaves; text "© Arun Babu 2015"

When to Spray Late-Season Bollworm

Another bollworm flight is on and, from the looks of it, there are many more moths in the system than the previous flight. This shouldn't be surprising, since this insect undergoes multiple…

Small brown caterpillar curled inside a green seed pod held between fingers

Bollworm Spray Recommendations for Bt Cotton and Important Scouting Changes

We are seeing as many, or more breakthroughs in Bt corn this year compared to last. Bollworms that are produced in Bt corn are adapted to survive on Bt cotton. What we have done in cotton prior to…

Avg % corn earworm survival (5 µg cypermethrin) 2011–2016: 16.92, No data, 18.49, 15.48, 27.27, 30.90

Considerations for Pyrethroids (Bifenthrin and Others) Used to Manage Bollworm in Cotton and Soybean

Pyrethroids (common examples include Baythroid XL, bifenthrin, Declare, Karate Z, and Mustang Maxx) have been used for managing bollworm (corn earworm) in the Southeast for over 40 years. Given this…

Two yellow-green moths, dorsal view, on white background; label "UGA1435150".

Be Prepared to Spray Bollworm in Bt Cotton During 2017

Bollworms are abundant again during 2017. Many survived the winter an emerged early. This could mean trouble for cotton, since we have the potential to crank out an additional generation, and since…

Small brown caterpillar curled inside a green seed pod held between fingers

Managing Bollworms in Bt Cotton Through Season’s End

Written by Drs. Guy Collins and Dominic ReisigAs predicted, we have had an extraordinary year for bollworms in Bt cotton, some growers stating that cotton looks like it did before Bt. We can assure…

Pencil tip pointing at a tiny insect egg on a green leaf

Be Prepared to Spray Bollworm in Bt Cotton This Year- Change in Recommendation

As noted in this complementary article, bollworm populations have been heavy this year in corn and they are breaking through a lot of Bt corn. What that means for cotton growers is that they need to…