Ojha, P.K. and Kumari, R. and Chaudhary, R.S.
(2017)
Impact of abiotic and biotic factors on population
dynamics of Helicoverpa armigera Hubner
(Noctuidae: Lepidoptera) in chickpea.
Journal of Entomology and Zoology Studies, 5 (1).
pp. 636-642.
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Abstract
To determine the impact of abiotic factors and parasitization by Campoletis chlorideae on population
dynamics of Helicoverpa armigera, investigations were undertaken in chickpea during winter 2010-11
and 2011-12. Weekly observations were recorded regarding abiotic factors in relation to larval intensity,
larval parasitization, and rate of larval multiplication in field or lab conditions. It was concluded that
during February month, the larval population had the highest peaks as 8.93 & 7.93 larvae m-1 row along
with the highest multiplication rate as 0.44 & 0.33 larvae/day. The natural parasitization was the
maximum during December month as 51.67 & 56.67%. Simple correlation coefficient (r) of temperature
(maximum and minimum), wind speed, and evaporation rate had reflected positive values when relative
humidity (morning and evening), rainfall and larval parasitization played a negative role on the pest
population.
| Item Type: |
Article
|
| Uncontrolled Keywords: |
Population dynamics, Helicoverpa armigera, Abiotic factor, Campoletis chlorideae, Chickpea, Larval parasitization |
| Author Affiliation: |
University Department of Zoology, Lalit Narayan Mithila
University, Darbhanga, Bihar, India |
| Subjects: |
Plant Protection |
| Divisions: |
Chickpea |
| Depositing User: |
Mr B Krishnamurthy
|
| Date Deposited: |
20 Sep 2017 04:17 |
| Last Modified: |
20 Sep 2017 04:17 |
| URI: |
http://eprints.icrisat.ac.in/id/eprint/15040 |
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