Effect of intercropping on Helicoverpa armigera (Hüb.) infesting chick pea

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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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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