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POTENTIAL OF BIOPESTICIDES FOR THE MANAGEMENT OF Chiloloba acuta (WIEDMANN) (COLEOPTERA: SCARABAEIDAE)

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Title POTENTIAL OF BIOPESTICIDES FOR THE MANAGEMENT OF Chiloloba acuta (WIEDMANN) (COLEOPTERA: SCARABAEIDAE)
 
Creator DHANYA K.M.
 
Contributor Pradyumn Kumar)
 
Subject animal developmental stages, biological phenomena, fungi, parasites, maize, land resources, developmental stages, biological control, crops, planting
 
Description T-8101
Chiloloba acuta is an emerging pest in maize agro-ecosystem. For the
management of this pest, soil application of entomopathogenic fungi, nematode and neem
cake have been tested against larvae in the laboratory. The efficacy of entomopathogenic
nematodes at two doses (100 IJs/ml and 500 IJs/ml) each of Heterorhabditis indica, H.
bacteriophora, Steinernema glaseri, S. thermophilum, S. riobrave and Steinernema sp.
strain kr-1; entomopathogenic fungi, at two doses (2x106
and 2x107 spores/ml) each of
Metarhizium anisopliae and Beauveria bassiana and two doses (0.25g/kg soil and
0.5g/kg soil) of neem ckae for the management of C. acuta (5 months old grubs) was
studied. None of the entomopathogenic fungi at both the concentrations affected the C.
acuta larvae in any way. Mortality was observed in all the entomopathogenic nematodes
except in H. indica, however no mortality occurred in control also. Among the different
nematodes tested, at 500 IJs/ml level, S. thermophilum showed maximum mortality of
grubs (60 %) followed by H. bacteriophora and Steinernema sp. strain kr-1 (50 %), S.
glaseri (30 %) and S. riobrave (20 %) whereas at 100 IJs/ml level, Steinernema sp. strain
kr-1 showed 30 % mortality, S. glaseri showed 20 % mortality and S. riobrave gave 10 %
mortality. No mortality was observed in case of H. bacteriophora and S. thermophilum at
100 IJs/ml level. Among these entomopathogenic nematodes used, Steinernema sp. strain
kr-1, S. thermophilum and H. bacteriophora can be considered as the promising ones. In
neem cake treatment, feeding deterrence was observed and there was reduction in size of
grubs in both doses. The laboratory study indicates that Steinernema sp. strain kr-1, S.
thermophilum, H. bacteriophora and neem cake application in soil holds promise and
therefore can be tested for the management of C. acuta in the field.
 
Date 2016-12-16T11:47:04Z
2016-12-16T11:47:04Z
2009
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/90533
 
Format application/pdf
 
Publisher IARI, DIVISION OF ENTOMOLOGY