NISCAIR Online Periodicals Repository

Research Journals >
Bharatiya Vaigyanik evam Audyogik Anusandhan Patrika (BVAAP) >
BVAAP Vol.18 [2010] >
BVAAP Vol.18(1) [June 2010] >

Title: Bio-efficacy of different entomopathogenic nematode species against Scarab Grubs
Authors: Rathour, K S
Kumar, Sushil
Ganguli, Sudershan
Issue Date: Jun-2010
Publisher: CSIR
Abstract: Entomopathogenic Nematodes (EPNs) of the families Steinernematidae and Heterorhabditidae are being used as potential biological control agents against several insect-pests of turf grass, citrus, vegetables, fruits and other agriculturally important crops, as well as many veterinary and house-hold insect pests including termites. They carry symbiotic bacteria Xenorhabdus spp. (Steinernematidae) and Photorhabdus spp.(Heterorhabditidae) which is required to kill the insect host and to digest its tissues, thereby providing nutrient conditions for nematode growth and development. These nematodes kill the host insect within 24-48 h. by causing septicemia, complete their life cycle inside the cadavers and emerge en-masses within 4-5 days after mortality in case of steinernematidae and 9-15 days in case of helerorhabditids. Scarabs (Order Coleoptera) are serious pests of several field crops. Their adults feed on foliage while their larval forms, commonly called as white grubs, live in soil and feed on roots. Our recent surveys showed heavy population of grubs in the rhizosphere of sugarcane in Meerut. The grubs were collected from the fields for use in the present study. Managing scarab grubs by entomopathogenic nematodes is highly challenging because they tend to avoid infection by frequent defecation. The biocontrol efficacy of 8 EPN species/strains viz. Steinernema thermophilum; S. glaseri; S. riobrave strain GAU-M; S. carpocapsae strain Megha-1; Heterorhabditidae bacteriophora strain GAU; indica strain Megha-3; Heterorhabditiditis strain Haryana-2 and Haryana-5 was tested against scarab (Hototrichia cosanguina) larvae. All the species/strain were found to be highly efficacious against scarab larvae and could induce 80-100% mortality with in 5-6 DAI (days after inoculation). Among the tested species/strain S. glaseri was found to be highly efficacious inducing 100% mortality within 5 DAI; followed by S. thermophilum, and H. indica causing 100% mortality within 6 DAI. The other tested species/strain S. riobrave, S. carpocapsae, Heterorhabditis strain Haryana-2. H. bacteriophora and Heterorhabditis strain Haryana-4 could induce only 80% mortality up to 6 DAI. The higher efficacty of S. glaseri is attributed to its cruising type behavior best suited for accessing scarab larvae. In view of the pesticide resistance being developed in several insects, EPNs can be a suitable eco-friendly option for incorporating in integrated pest management programmes.
Page(s): 9-14
ISSN: 0975-2412 (Online); 0771-7706 (Print)
Source:BVAAP Vol.18(1) [June 2010]

Files in This Item:

File Description SizeFormat
BVAAP 18(1) 9-14.pdf221.79 kBAdobe PDFView/Open
 Current Page Visits: 808 
Recommend this item


Online Submission of Articles |  NISCAIR Website |  National Knowledge Resources Consortium |  Contact us |  Feedback

Disclaimer: NISCAIR assumes no responsibility for the statements and opinions advanced by contributors. The editorial staff in its work of examining papers received for publication is helped, in an honorary capacity, by many distinguished engineers and scientists.

CC License Except where otherwise noted, the Articles on this site are licensed under Creative Commons License: CC Attribution-Noncommercial-No Derivative Works 2.5 India

Copyright © 2015 The Council of Scientific and Industrial Research, New Delhi. All rights reserved.

Powered by DSpace Copyright © 2002-2007 MIT and Hewlett-Packard | Compliant to OAI-PMH V 2.0

Home Page Total Visits: 171919 since 01-Sep-2015  Last updated on 30-Jun-2016Webmaster: