Submitted to: National Cotton Council Beltwide Cotton Conference
Publication Type: Proceedings
Publication Acceptance Date: January 13, 2006
Publication Date: January 13, 2006
Citation: McGuire, M.R., Leland, J.E. 2006. Field trials of Beauveria bassiana against Lygus spp. in California and Mississippi. National Cotton Council Beltwide Cotton Conference. p. 1389-1392.
Lygus hesperus and L. lineolaris are particularly devastating pests of cotton in the western and midsouthern US respectively. The fungal entomopathogen Beauveria bassiana infects and kills both Lygus species and new isolates of the fungus discovered in California and Mississippi were tested under field conditions for their effectiveness in infecting and controlling populations of Lygus. The commercial isolate, GHA was also tested. All three isolates could infect large percentages of Lygus in the field. However, populations of both species were not reduced as infection levels would have predicted. Infection levels were reduced as the application rate of conidia was reduced but infections were still > 50% at the lowest dose tested.