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Submitted
March 18, 2022
Published
August 8, 2022
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Abstract

The incidence of aphid Aphis craccivora Koch in Indian bean Lablab purpureus (L.) reached its peak during 2nd week of January (2nd SMW) with 25.27 aphids/ twig of 10 cm. Maximum incidence of jassid Empoasca kerri Pruthi (8.20/ leaf) and whitefly Bemisia tabaci (Gennadius) (7.12/ leaf) was observed during 4th week of December (52nd SMW). The thrips Megalurothrips distalis Karny started appearing from 4th week of November (48th SMW) reaching its peak (10.35/ flower) during 1st SMW. Maximum larval counts of Helicoverpa armigera (Hubner) (5.79/ plant) was observed during 2nd week of January (2nd SMW), while in case of Maruca vitrata Geyer (7.21/ plant) it was during 2nd week of January (2nd SMW). Maximum and minimum temperature showed significant negative influence on the incidence of all these pests; and morning relative humidity showed significant negative effect on all except M. distalis. While morning vapour pressure showed significant negative influence on the incidence of all pests except E. kerri and B. tabaci.

Keywords

Lablab purpureus, Empoasca kerri, Bemisia tabaci, Megalurothrips distalis, Helicoverpa armigera, Maruca vitrata, seasonal incidence, weather factors, correlation coefficients

Article Details

How to Cite
M, D. V. ., & Patel, . D. R. . (2022). Population dynamics of major insect pests of Indian bean. Indian Journal of Entomology, 1–3. https://doi.org/10.55446/IJE.2021.351
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