Herculex I is a transgenic corn trait being commercially marketed by Dow AgroSciences LLC, through its affiliate Mycogen Seeds, and Pioneer Hi-Bred International, Inc. 2003 is the first year of commercial sales of hybrids containing the Herculex I trait. Herculex I hybrids contain the Cry1F protein which has been derived from Bacillus thuringiensis (Bt) serovar aizawai. These hybrids are protected from infestations of European corn borer (Ostrinia nubilalis), southwestern corn borer (Diatraea grandiosella), black cutworm (Agrotis ipsilon ) and fall armyworm (Spodoptera frugiperda), and provide suppression of damage from corn earworm (Helicoverpa zea). Field trials in 2000 suggested that Herculex I might also reduce damaging infestations of western bean cutworm (Richia albicosta). Subsequent research programs have focussed on characterizing the degree of activity provided by Herculex I hybrids for preventing economically damaging infestations by western bean cutworm. Replicated small plot trials, strip trials and commercial observations were utilized to characterize Herculex I performance against Western Bean Cutworm. Collectively data from these trials indicate Herculex I provides commercial level protection against western bean cutworm.
Species 1: Lepidoptera Noctuidae Richia albicosta (western bean cutworm)
Keywords: Cry1F, efficacy
Back to Display Presentations, Section F. Crop Protection Entomology
Back to Posters
Back to The 2003 ESA Annual Meeting and Exhibition