Population dynamics and comparative efficacy of certain chemicals and biopesticides against okra sucking pests
Challa Nalini and Ashwani Kumar
The present trail was conducted to study population dynamics and efficacy of certain insecticides against sucking pests of okra during kharif season 2015. Results showed that the population of whitefly Bemesia tabaci) and leafhopper (Amrasca biguttula biguttula) has positive correlation with maximum temperature. Occurrence of whitefly and leafhoppercommenced from 35th standard week (August third week) and then the population gradually increased and reached to its peak by 41st standard week (October second week) where after a decline in population was observed as temperature decreased. Dimethoate 30EC was found to be superior with a least population of 2.77 (whiteflies/3leaves) and 2.45 (leafhoppers/3leaves) respectively, followed by Spinosad 3.20 (whiteflies/3leaves), 3.34 (leafhoppers/3leaves), and all the treatments were found to be superior over the control.
Challa Nalini, Ashwani Kumar. Population dynamics and comparative efficacy of certain chemicals and biopesticides against okra sucking pests. J Entomol Zool Stud 2018;6(4):888-891.