Life table studies of Helicoverpa armigera (Hubner) on pigeonpea.

Bisane, K.D. and Katole, S.R. (2008) Life table studies of Helicoverpa armigera (Hubner) on pigeonpea. Indian Journal of Entomology, 70 (4). pp. 350-355.

[img] PDF
Restricted to ICRISAT researchers only

Abstract

Life tables for determining mortality factors of Helicoverpa armigera on pigeon pea were prepared during 2004-05 and 2005-06. In the life table of absolute population of field-collected life stages, egg non-viability was 9.35%, whereas, smaller larvae was the most vulnerable stage as parasitoids accounted for 37.70% mortality. Highest parasitization (15.58%) was recorded due to Eriborus argenteopilosus followed by Campoletis chlorideae (5.53%) and Bracon sp. (4.02%). In bigger and prepupal larvae, tachinid fly caused 7.37 and 5.38% parasitization respectively. Besides, HaNPV disease contributed to 2.52 and 0.49% reduction of smaller and bigger larvae respectively. Pupal suppression was 30.0% on pigeon pea, where tachinid fly resulted in the highest mortality of 12.73%. Life table from field collected eggs revealed the highest mortality 13.47% in egg stage on pigeon pea and artificial diet. Similarly in laboratory cultured eggs on pigeon pea and artificial diet, egg stage showed maximum population reduction of 10.19 and 10.94%, respectively, followed by the first instar larvae and pupal stage. The maximum generation survival of H. armigera was more on artificial diet than pigeonpea.

Item Type: Article
Author Affiliation: Department of Entomology, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola, India
Subjects: Plant Protection > Pesticides
Plant Protection > Pests
Divisions: Pigeonpea
Depositing User: Mr B Krishnamurthy
Date Deposited: 12 Dec 2010 22:33
Last Modified: 29 Dec 2010 19:52
Official URL: http://www.indianjournals.com/ijor.aspx?target=ijo...
URI: http://eprints.icrisat.ac.in/id/eprint/975

Actions (login required)

View Item View Item