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Tag Archives: earworm

Why you should plant non-Bt corn as resistance insurance

corn earworm

• By Dominic Reisig • All growers who plant Bt corn in North Carolina are required by law to plant non-Bt corn (refuge). Details are specified on the bag tag, but non-Bt corn must represent at least 20% of the total corn acres, including both Bt and non-Bt corn. Even if refuge-in-a-bag (RIB) hybrids are planted, North Carolina growers must ... Read More »

EPA proposal could drastically change Bt corn resistance management

corn earworm

• By Pat Porter • My recent post discussed the proposal by Environmental Protection Agency to drastically change the resistance management regulations around Bt corn and cotton. You can submit a comment here before Nov. 9. The proposal is hard to find on the EPA website, so I have reposted it here. Part of the plan is to phase out ... Read More »

EPA proposes sweeping changes to Bt crops in the Cotton Belt

corn earworm larva

• By Pat Porter • This week, the Environmental Protection Agency released a draft plan that essentially overhauls many of the regulations around insect resistance management in Bt crops grown in the Cotton Belt. There are many major changes proposed, one of which is that field failures are presumed to be cases of “practical resistance” if certain criteria are met ... Read More »