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Agricultural Science Digest, volume 33 issue 1 (march 2013) : 77-79

POPULATION FLUCTUATIONS OF HELICOVERPA ARMIGERA AND CAMPOLETIS CHLORIDEAE AND THEIR RELATIONSHIP ON CHICKPEA

Munni Lal, S.V. Singh, Dharmendra Singh*, B.N. Pal
1Department of Entomology, C.S. Azad University of Agriculture and Technology, Kanpur-208 002, India

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Cite article:- Lal Munni, Singh S.V., Singh* Dharmendra, Pal B.N. (2024). POPULATION FLUCTUATIONS OF HELICOVERPA ARMIGERA AND CAMPOLETIS CHLORIDEAE AND THEIR RELATIONSHIP ON CHICKPEA. Agricultural Science Digest. 33(1): 77-79. doi: .

ABSTRACT

Two peaks of the larval population of gram pod borer, Helicoverpa  armigera were noticed first  peak during 49th meteorological week(MSW) with a maximum of 1.73 and 2.13 larvae m-1  row length and second peak with 8.93 and 7.93 larvae m-1 row during 8-9th MSW in 2003-04 and 2004-05, respectively which decreased sharply  with maturity of the crop. The temperature and wind speed showed positive relationship with the larval multiplication during both the years. Relative humidity and rainfall exhibited negative effect on larval multiplication of pest during first the year. The Ichneumonids (Campoletis chlorideae) exhibited reciprocal relationship with environmental parameters and suppressed larvae of H. armigera.

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