Record Details

Determination of LD 50 and LT 50 of entomopathogenic nematodes against shoot borer (Conogethes punctiferalis Guen.) infesting ginger (Zingiber officinale Rosc.)

DSpice at Indian Institute of Spices Research

View Archive Info
 
 
Field Value
 
Creator PERVEZ, R
DEVASAHAYAM, S
EAPEN, S J
 
Date 2014-05-19T09:01:50Z
2014-05-19T09:01:50Z
2014
 
Identifier Annals of Plant Protection Sciences 22(1): 169-173 (2014)
0971-3573
http://hdl.handle.net/123456789/1102
 
Description Study on the pathogenicity of four native entomopathogenic nematodes, Heterorhabditis sp. (IISR-EPN 01), Stelnernema sp. (IISR-EPN 02), Oscheius sp. (IISR-EPN 08) and O.gingeri against shoot borer larva (SBL), by dose response and time exposure assay and determination of lethal dosages (LD 50) and lethal time (LT 50) by regression analysis. LD 50 were calculated using four densities of
test EPNs viz., 25, 50, 75 and 100 IJs/SBL and LT50 was calculated using one nematode density 100 IJs to mortality of SBL at 24, 48 and 72 hrs. Although the SBL was susceptible to test EPNs, there were differences among these EPNs in their ability to kill the insect. Among test EPNs, Steinernema sp. (IISR-EPN 02) and O. gingeri appears to be the most promising. The per cent mortality of SBL increased with the increase the dosages as well as exposure time. A positive correlation was found
between dosages as well as exposure time and mortality. Probit analysis indicated that Oscheius sp. (IISR-EPN 08) required less' number (48 IJs/larva), whereas Steinernema sp. (IISR-EPN 02) took less time (29 hrs) for desired mortality of SBL. This study will be helpful in the shoot borer
management under field conditions.
 
Format 390785 bytes
application/pdf
 
Language en
 
Subject Conogethes punctiferalis
LD50
Zingiber officinale
 
Title Determination of LD 50 and LT 50 of entomopathogenic nematodes against shoot borer (Conogethes punctiferalis Guen.) infesting ginger (Zingiber officinale Rosc.)
 
Type Article