Department of Plant Breeding and Genetics, Punjab Agricultural University, Ludhiana - 141 004, Punjab, India
*Corresponding author's present address: Department of Entomology, Punjab Agricultural University, Ludhiana - 141 004, Punjab, India, E-mail: akankshasingla684@gmail.com
Online Published on 29 December, 2021.
Economic threshold level (ETL) for gram pod borer, Helicoverpa armigera on chickpea was experimentally worked out during a trial conducted under All India Co-ordinated Research Project (AICRP) during rabi2018–19 and 2019–20. The yield losses due to pod borer ranged from 6.94–40.72 per cent with increase in larval density from 0.5–3.0 larvae/meter row. The highest pod damage (25.73%) and minimum seed yield (1239 kg ha−1) was observed in the treatment comprising of three larvae per meter row length. Thus, on the basis of regression analysis and gain threshold, the Economic injury level (EIL) and Economic threshold level (ETL) of H. armigera in chickpea was determined as 2.35 and 1.76 larvae per meter row, respectively.
Chickpea, Economic injury level (EIL), Economic threshold level (ETL), Gram pod borer, Pest control
