FIELD AND LABORATORY PERFORMANCE OF WIDESTRIKE INSECT PROTECTION AGAINSTSECONDARY LEPIDOPTERAN PESTS

摘要

Field and laboratory studies conducted during 2004 have indicated WideStrike cotton to be effective against important secondary lepidopteran pests of cotton. WideStrike varieties, including PHY440W and PHY470WR, were highly effective against fall armyworm, Spodoptera frugiperda; soybean looper, Pseudoplusia includens; cabbage looper, Trichoplusia ni; European corn borer, Ostrinia nubilalis; citrus peelminer, Marmara gulosa; cotton leaf perforator, Bucculatrix thurberiella; and omnivorous leafroller,Playnota stultana. Efficacy of WideStrike was demonstrated against low-level field infestations of black cutworm, Agrotis ipsilon. Results from artificially infested efficacy trials against beet armyworm, Spodoptera exigua, suggest larval survival and foliage feeding may be greater than other species evaluated. The deregulation and registration of WideStrike will enable additional testing under more realistic field conditions.