Susceptibility of four species of turfgrass-infesting scarabs (Coleoptera: Scarabaeidae) to Bacillus thuringiensis serovar japonensis strain Buibui |
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Authors: | Bixby Andrea Alm Steven R Power Kevin Grewal Parwinder Swier Stanley R |
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Institution: | Department of Plant Sciences and Entomology, University of Rhode Island, Kingston, RI 02881, USA. |
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Abstract: | Bacillus thuringiensis serovar japonensis strain Buibui experimental formulations containing Cry8Cal delta-endotoxin were evaluated in the field for the control of oriental beetle, Anomala orientalis Waterhouse; Japanese beetle, Popillia japonica Newman; Asiatic garden beetle, Maladera castanea (Arrow); and European chafer, Rhizotrogus majalis (Razoumowsky) larvae infesting turfgrasses. In 17 fall applications, control of A. orientalis and P. japonica was achieved at rates as low as 100 g of toxin per ha; however, rates of 301 or 593 g/ha were consistently more effective. A. orientalis larvae were the most susceptible followed by P. japonica, R. majalis, and M. castanea. Two spring applications of 120 g of toxin per ha were not effective against oriental or Japanese beetles. |
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