STUDIES ON NATIVE ISOLATES OF ENTOMOPATHOGENIC NEMATODES AGAINST Spodoptera litura (Fabricius) AND Spodoptera frugiperda (J. E. Smith)
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Date
2021
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DEPARTMENT OF NEMATOLOGY B. A. COLLEGE OF AGRICULTURE ANAND AGRICULTURAL UNIVERSITY ANAND
Abstract
The studies on native isolates of entomopathogenic nematodes against
Spodoptera litura and Spodoptera frugiperda were carried out in the Department of
Nematology, B. A. College of Agriculture, Anand Agricultural University, Anand
(Gujarat) during Kharif and Rabi 2020-21. A total, 103 soil samples were collected
from different habitats, viz., fruit crops, field crops and fallow land of the AAU
campus, Anand. Out of these, three were found positive and collected from three
different locations, i.e., Horticultural farm (Mango), Veterinary College Garden and
International Agri-Business Management College. The frequency of occurrence of
these nematodes was 2.9 per cent and they belonged to the genus Steinernema.
Nematode cultures from different locations were considered isolates and designated
Steinernema sp. (AAU St-1), Steinernema sp. (AAU St-2) and Steinernema sp.
(AAU St-3). Among three, Steinernema sp. (AAU St-1) was successfully
maintained under laboratory conditions. Based on the morphometrics, Steinernema
sp. (AAU St-1) was found similar to Steinernema ritteri.