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Journal of Entomological Research
Year : 2024, Volume : 48, Issue : 1
First page : ( 48) Last page : ( 51)
Print ISSN : 0378-9519. Online ISSN : 0974-4576.
Article DOI : 10.5958/0974-4576.2024.00010.0

Incidence pattern of major insect pests of long duration pigeon pea (Cajanus cajan) and their correlation with weather factors

Prajapati Krishna Kant, Ramkumar*, Keval Ram1

Department of Entomology, Chandra Shekhar Azad University of Agriculture and Technology, Kanpur-208 002, Uttar Pradesh, India

1Department of Entomology and Agricultural Zoology, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi - 221 005, Uttar Pradesh, India

*Corresponding authors' E-mail : rkm1997@bhu.ac.in

Online published on 4 March, 2024.

Abstract

The incidence of Melanagromyza obtusa was observed in the 2nd SW, whose maggot population was highest in the 11th SW (8.07 maggots/plant). The presence of Clavigralla gibbosa was noticed for the first time in the 2nd SW, which reached its peak (6.13 bugs/plant) in the 12th SW. Gram pod borer (H. armigera) larva initially appeared in the 3rd SW, and the maximum in the 12th SW (4.40 larvae/plant). The plume moth (E. atomosa) larval first incidence in the 4th SW and maximum larval population was found in the 12th SW (2.20 larvae/plant). The highest and lowest temperatures had a significant positive association with all insect populations, whereas a significant negative association between all the insects with evening RH. The tur pod fly and plume moth population had a significant positive association with sunshine hours.

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Keywords

Abiotic factor, Clavigralla gibbosa, Correlation, Exelastis atomosaHelicoverpa armigeraMelanagromyza-obtusa, Pigeon pea.

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