Efficacy of Aschersonia aleyrodis Against citrus blackfly and whitefly Bhosale D N, Ingle Y V*, Paithankar D H, Sadawarte A K AICRP on Fruits, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola, 444104, Maharashtra *Email: yog_ingle@rediffmail.com (corresponding author)
Online published on 24 September, 2020. Abstract The entomopathogenic fungus Aschersonia aleyrodis (Webber) is a promising fungal species against citrus blackfly and whitefly. In vitro study was carried out to assess the pathogenicity of an A. aleyrodis isolate against Aleurocanthus woglumi Ashby and Dialeurodes citri Ashmead with topical application method. Bioassays were undertaken with 1 × 105 to 1 × 109 spore/ml concentration against 2nd instar nymphs. The results indicated that the mortalities are concentration and age dependent. LT50 values of 8.14 to 13.77 days and 6.88 to 9.72 days, respectively were obtained at the respective concentrations. Probit analysis for LC50 values obtained were: 1.8 × 107 and 1.2 × 107 spore/ml for A. woglumi and D. citri, respectively. LC50 and LT50 were observed to be dose dependent. Top Keywords Aschersonia aleyrodis, Aleurocanthus woglumi, Dialeurodes citri, Citrus, 2nd instar, Bioassays, Probit analysis, LC50 and LT50. Top |