Evaluation of the effect of different Dates of Sowing Regimes in Chickpea against Legume Pod Borer, Helicoverpa armigera (Hubner)

Author: Ramana N., Sai Ram Kumar D.V., Jagdish Jaba, Anil Kumar P., Srinivasa Rao V., Suraj Prashad M. and Pooja Bhatnagar M.

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Abstract

Effect of different sowing dates on chickpea crop and varietal factors against the incidence of legume pod borer Helicoverpa armigera, pod damage and yield were studied at the International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Patancheru, Hyderabad, Telangana during the post rainy seasons of 2019-20, and 2020-21. Ten Chickpea genotypes were sown at monthly intervals during first weeks of September, October and November. Each entry was sown in a 6 row plots, with 10 x 30 cm spacing. There were four replications in a split plot design. Among the different sowing regimes tested, November sown crop was found to be optimal and right time for sowing of the chickpea genotype to evade the pod borer coincidence. The borer population fluctuated with the change in dates of sowing. Pod borer population was higher in the early sown crop (September) and with delayed dates of sowing in October and November population decreased. There were significant differences in percent po

Keywords

Chickpea genotypes, Temporal factors, Varietal performance, Pod borer, H. armigera