Pandey, R. and Ujagir, R. (2008) Effect of intercropping on Helicoverpa armigera (Hüb.) infesting chick pea. Annals of Plant Protection Sciences , 16 (2). pp. 320-324.
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Abstract
A field trial was conducted to determine the effect of coriander, linseed and barley as intercrops in chickpea on Helicoverpa armigera incidence and yield during the rabi seasons of 2003-04 and 2004-05 in Uttaranchal, India. In general, all the three intercrops were found to be effective in reducing the egg count and larval population. Overall, mean number of egg count varied from minimum of 17/m2 in chickpea+coriander (2:1) and chickpea+barley (4:2) to the maximum of 37.7/m2 in chickpea sole crop. The reducing effect of intercropping on egg count was more pronounced when chickpea and coriander were grown at the row ratio of 2:1. This suggested that both egg and larval counts of H. armigera could significantly be reduced if chickpea was intercropped with coriander at 2:1 ratio. The highest pod borer damage (90.6%) was recorded in chickpea sole crop, which was significantly suppressed with the introduction of intercrops. Mean equivalent grain yield in intercropping combinations ranged from maximum of 886.8 kg/ha in chickpea+coriander (4:2) to minimum of 188.9 kg/ha in chickpea sole crop.
| Item Type: | Article |
|---|---|
| Author Affiliation: | Department of Entomology, College of Agriculture, G.B. Pant Univ. of Agri. & Tech., Pantnagar - 263 145, India |
| Subjects: | Plant Protection > Pesticides Plant Protection > Pests Crop Improvement |
| Divisions: | Chickpea |
| Depositing User: | Mr B Krishnamurthy |
| Date Deposited: | 28 Nov 2010 18:27 |
| Last Modified: | 29 Dec 2010 20:13 |
| Official URL: | http://www.indianjournals.com/ijor.aspx?target=ijo... |
| URI: | http://eprints.icrisat.ac.in/id/eprint/807 |
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