Management of Leafhoppers with Novel Insecticide Molecules in Sesame (Sesamum indicum L.)
Kalapureddy Revathi *
Krishi Vigyan Kendra, Ghantasala, Krishna, India.
Karnam Hari Prasad
Department of Entomology, S.V. Agricultural College, Tirupati, ANGRAU, India.
Chalam MSV
Department of Entomology, S.V. Agricultural College, Tirupati, ANGRAU, India.
*Author to whom correspondence should be addressed.
Abstract
Chemical management method is still being adopted majorly for suppression of leafhoppers in India. Indiscriminate use of repeated chemicals may result in development of insect resistance and poor efficacy in reduction of insect population. A field study was conducted during kharif, 2020-21 at S.V. Agricultural College, Tirupati (dry land farm) to evaluate the effectiveness of novel insecticides viz., Thiacloprid, Thiamethoxam, Spinosad, Spiromesifen, Diafenthiuron, Dinotefuran, Flonicamid and Pymetrozine against sesame leafhoppers. Results indicated that the highest per cent reduction of leafhopper population was recorded in pymetrozine treated plots (90.73%) followed by dimethoate (79.42%) and thiamethoxam (78.80%). Spinosad and spiromesifen recorded lowest per cent reduction over untreated plot when compared to other treatments and were found least effective in managing leafhopper population.
Keywords: Sesame, leafhoppers, Pymetrozine, reduction over control