Efficacy of Trichogramma chilonis Ishii against sugarcane early shoot borer, Chilo infuscatellus Snellen under sugar factory operational areas of coastal Andhra Pradesh.

摘要

Multiplication of T. chilonis and its host insect, Corcyra cephalonica, was undertaken in the IPM laboratory, Regional Agricultural Research Station, Anakapalle (Andhra Pradesh, India) since 1999. The activity was intensified during 2003-04 with an objective to supply 'Trichocards' to sugarcane farmers for the control of sugarcane early shoot borer, Chilo infuscatellus. During 2004-05, ~130 million T. chilonis parasitoids were produced in the laboratory and supplied as Trichocards (6500 Trichocards) to the farmers through Sugar factories. Impact of T. chilonis on early shoot borer in factory operational areas of M/s Sri Sarvaraya Sugars Ltd., Chelluru (Andhra Pradesh) was studied. The T. chilonis-released plots recorded less incidence (0.16%) of early shoot borer in sugarcane compared to the untreated plots (3.33%). The T. chilonis-released plots recorded a cane yield of 120.3 t/ha and 19.0% juice sucrose..