Record Details

Evaluation of Few Newer Insecticide Molecules Against Helicoverpa armigera (Hubner) and its Management in Chickpea

KrishiKosh

View Archive Info
 
 
Field Value
 
Title Evaluation of Few Newer Insecticide Molecules Against Helicoverpa armigera (Hubner) and its Management in Chickpea
 
Creator Basavanneppa B. B.
 
Contributor R. A Balikai
 
Subject Agricultural Entomology
 
Description Investigations on evaluation of new molecules of insecticides and their toxicity,
ovicidal action, field efficacy on Helicoverpa armigera (Hubner) with phenotypic and genetic
variation in larvae on different hosts was carried out during 2012-13.
Cyantraniliprole 10 OD was found to be most toxic to H. armigera with LC50 value of
0.19 ppm followed by flubendiamide 480 SC (0.45 ppm), emamectin benzoate 5 SG (1.04
ppm) and chlorantraniliprole 18.5 SC (2.47 ppm). The mean egg mortalities of H. armigera
were highest in thiodicarb 75 WP @ 1 g/l (88.33%) followed by flubendiamide 480 SC @
0.1 ml/l (80.00%), indoxacarb 15.8 EC @ 0.3 ml/l (73.33%) and chlorantraniliprole 18.5 SC
@ 0.15 ml/l (71.66%).
Cent per cent protection over control after second spray was obtained by
flubendiamide 480 SC @ 0.1 ml/l and emamectin benzoate 5 SG @ 0.2 g/l followed by
cyantraniliprole 10 OD @ 0.3 ml/l (96.32%), indoxacarb 15.8 EC @ 0.3 ml/l (93.26%),
chlorantraniliprole 18.5 SC @ 0.15 ml/l (93.26%). Higher B:C ratio was obtained by
emamectin benzoate 5 SG @ 0.2 g/l (1:4.99) followed by flubendiamide 480 SC @ 0.1 ml/l
(1:4.92), indoxacarb 15.8 EC @ 0.3 ml/l (1:4.82) and cyantraniliprole 10 OD @ 0.3 ml/l
(1:4.50).
Different colour morphs of H. armigera larvae were collected from ten host plants.
Higher larval weight was recorded in chickpea and cotton. Longer larval length was noted in
chickpea, red gram and cotton. Irrespective of host plants, greenish and dark green colour
(23.5 and 23.0%, respectively) morphs were dominant. Characterization of H. armigera by
RAPD-PCR showed genetic homogeneity in the larvae collected from different hosts. The
highest number of 14 amplicon levels were produced by the primers H-18, followed by 13
levels by AB-11. An average of 7.42 amplicon levels per marker noticed were polymorphic
with 1.3 polymorphic amplicons per marker.
 
Date 2016-11-23T13:55:08Z
2016-11-23T13:55:08Z
2013
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/87232
 
Format application/pdf
 
Publisher UAS, Dharwad