Mitchell, Paul D.; Hurley, Terrance M.; Hellmich, Richard L. - Center for Agricultural and Rural Development (CARD), … - 2000
In order to prolong the efficacy of Bt, the Environmental Protection Agency has imposed mandatory refuge requirements for Bt crops. Growers, however, have no economic incentive to comply with requirements because, on average, refuge crops are riskier and less productive. The authors evaluate...