The efficacy of spinosad on different strains of spodoptera littoralis (Boisduval) (Lepidoptera: noctuidae)

The cotton leafworm, Spodoptera littoralis (Boisduval), was collected from commercial cotton production fields in Adana, Turkey, and tested for susceptibility to the insecticide spinosad. The susceptibility of the field strain was also compared to the susceptible strain (S) of S. littoralis.