Naik, C.M. and Chakravarthy, A.K. and Naik, T.B. and Sasivihalli , P.B. (2013) Population dynamics and management of Helicoverpa armigera (Hubner) (Noctuidae: Lepidoptera) on groundnut in coastal Karnataka. Environment and Ecology, 31 (1). pp. 54-57.
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Abstract
A field experiment was conducted during the rabi-summer of 2002-05 to study the population dynamics and to find out the effectiveness of insecticides and bio-pesticides against Helicoverpa armigera (Hubner) on groundnut. H. armigera population was reached its peak on groundnut in coastal Karnataka during the month of February. The mean larval population/plant during February ranged from 1.43 to 2.06 larvae/plant. Among the insecticides and bio-pesticides evaluated against H. armigera, the insecticide quinolphos (0.05) recorded the least leaf damage of 9.55% and it was at par with chlorpyriphos (0.05) (11.22%). Highest pod yield of 9.86 q/ha was recorded with chlorpyriphos (0.05) followed by quinolphos (0.05) 9.41 q/ha. The maximum cost:benefit ratio of 1:6.12 was obtained in quinolphos (0.05)
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Helicoverpa armigera, population dynamics, Management, Groundnut |
| Author Affiliation: | AICRP on Soybean, University of Agricultural Sciences, GKVK, Bengaluru 560 065, India. |
| Subjects: | Plant Protection Environmental Science |
| Divisions: | Groundnut |
| Depositing User: | Mr B Krishnamurthy |
| Date Deposited: | 06 Jun 2013 14:38 |
| Last Modified: | 06 Jun 2013 14:38 |
| URI: | http://eprints.icrisat.ac.in/id/eprint/10697 |
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