A Maximum Dose Bioassay to Assess Efficacy of Spinetoram against Cowpea Thrip Megalurothrips usitatus in China.

ABSTRACT: The bean flower thrip Megalurothrips usitatus (Bagnall) is a severe pest on cowpeas and causes a 20-30% reduction in cowpeas in Hainan, China, with even complete crop failure in severe cases. Spinetoram is currently the most important pesticide against M. usitatus in cowpea production. In the main producing areas of cowpeas in Hainan, however, the efficacy of spinetoram against M. usitatus is not well known. In the present study, we employed the maximum dose bioassay to evaluate the efficacy of the mortality rates of adult thrips at F₀ in spinetoram, freshly collected from 212 field populations of M. usitatus collected from 20 villages in the Yazhou District of Hainan. Our results showed that the mortality rates of these thrip populations exposed to s

SUBMITTER: Yu H 

PROVIDER: S-EPMC11204267 | biostudies-literature | 2024 Jun

REPOSITORIES: biostudies-literature