Surface and subsurface application of Beauveria bassiana for controlling mole crickets (Orthoptera: Gryllotalpidae) in golf courses

摘要

Three commercial formulations of Beauveria bassiana (Balsamo) Vuillemin were tested for controlling the southern mole cricket, Scapteriscus borellii Giglio-Tos (formally as S. acletus Rehn & Hebard), and the tawny mole cricket, S. vicinus Scudder, on bermudagrass, Cynodon dactylon (L.) Pets, fairways in 1997, 1998, and 1999. Mole cricket damage ratings from B. bassiana-treated plots were not significantly different from the untreated control in all surface applications, although damage ratings in the plots treated with B. bassiana were numerically lower than the untreated control in most situations. Imidacloprid, bifenthrin, or deltamethrin did not show better mole cricket control than B. bassiana. No synergistic effect was observed in this study between imidacloprid and B. bassiana for mole cricket control. Although subsurface application of B. bassiana did not provide significantly better mole cricket control compared with the corresponding surface application, it appeared that certain formulations of B. bassiana were more effective with subsurface application. One formulation (Biological Insecticide 7695 SCK) provided significantly better mole cricket control with subsurface application compared with the untreated check.