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STUDIES ON THE MASS PRODUCTION AND PATHOGENICITY OF Nomuraea rileyi (Farlow) SAMSON : AN ENTOMOPATHOGENIC FUNGUS

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Title STUDIES ON THE MASS PRODUCTION AND PATHOGENICITY OF Nomuraea rileyi (Farlow) SAMSON : AN ENTOMOPATHOGENIC FUNGUS
 
Creator BABI NEERAJA, D
 
Contributor MANJULA, K
 
Subject MASS, PRODUCTION, PATHOGENICITY, Nomuraea, rileyi, SAMSON, ENTOMOPATHOGENIC, FUNGUS
 
Description The investigations were carried out to evaluate the mass production
of N. rileyi on different food grain media, the efficacy of N. rileyi against
Spodoptera litura and the compatibility of N. rileyi with certain
insecticides and fungicides under laboratory conditions in the Department
of Entomology, S.V. Agricultural College, Tirupati during 2007-2008.
The crushed sorghum, bajra, maize, rice, ragi and wheat grains were
used along with 1% yeast for mass production of Nomuraea rileyi. Among
the food grains, crushed sorghum and rice have proved as favourable food
media for faster as well as higher spore production.
In the pathogenicity studies of N. rileyi, against II, III and IV instar
larvae of Spodoptera litura, the infected larvae died by showing the
characteristic mummification. A positive correlation was noticed between
the larval mortalities and N. rileyi spore concentration. The incubation
period was negatively correlated with the concentration of N. rileyi in all
the three instars under test. The pupal mortalities and the emergence of
malformed adults were in positive association with the concentration of
N.rileyi.
Among the ten insecticides and seven fungicides evaluated,
spinosad, fenvalerate, indoxacarb and sulphur expressed their relative
compatibility with N. rileyi.
Higher spore count was obtained from cadavers of IV instar than III
and II.
 
Date 2016-08-02T13:49:02Z
2016-08-02T13:49:02Z
2008
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/70551
 
Language en
 
Relation D8398;
 
Format application/pdf
 
Publisher ACHARYA N. G. RANGA AGRICULTURAL UNIVERSITY, RAJENDRANAGAR, HYDERABAD