(3.215.182.81)
Users online: 905    [ij] [ij] [ij] 
Email id
 

Journal of Entomological Research
Year : 2009, Volume : 33, Issue : 1
First page : ( 41) Last page : ( 43)
Print ISSN : 0378-9519. Online ISSN : 0974-4576.

Relative efficacy of Trichogramma chilonis Ishii and Trichogramma brasiliensis (Ashmead) alone and combination with endosulfan on chickpea and pigeonpea for control of Helicoverpa armigera Hübner

Kumar Arvind, Kumar Suneel, Khan M.A.

Department of Entomology, College of Agriculture, G.B. Pant University of Agriculture & Technology, Pantnagar - 263 145, Uttarakhand, India.

Accepted:  20  January,  2009.

Abstract

Studies on relative efficacy of Trichogramma chilonis and Trichogramma brasiliensis alone and combination with endosulfan on chickpea and pigeonpea for the control of Helicoverpa armigera Hübner revealed no significant differences among the parasitization, observed in different treatments. Maximum parasitization of 10.6% was observed in both chickpea and pigeonpea, when T. chilonis @ 50,000/ha + endosulfan @ 350 gm a.i was applied, whereas, minimum parasitization 2.5% and 5.0% by T. chilonis @ 50,000/ha was observed in chickpea and pigeonpea, respectively. The mean percent parasitization of eggs of H. armigera by Trichogramma brasiliensis was 6.7% and 7.6% on chickpea and pigeonpea, respectively, which was very low to control the H. armigera to reach EIL.

Top

  
║ Site map ║ Privacy Policy ║ Copyright ║ Terms & Conditions ║ Page Rank Tool
409,755,117 visitor(s) since 30th May, 2005.
All rights reserved. Site designed and maintained by DIVA ENTERPRISES PVT. LTD..
Note: Please use Internet Explorer (6.0 or above). Some functionalities may not work in other browsers.