Incidence and Management of Major Insect Pest on Cluster bean (Cyamopsis tetragonaloba L. Taub.)
Loading...
Date
2019-05-30
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
MPUT, UDAIPUR
Abstract
The investigation on, Incidence and Management of Major Insect Pests on
Cluster bean Cyamopsis tetragonaloba (L.) Taub. Was carried out at Horticulture
Farm and Department of Entomology, Rajasthan College of Agriculture, MPUAT,
Udaipur during Kharif, 2018.
The incidence of aphid, jassid and whitefly were commenced in the second
week of July. While the incidence of thrips commenced in third week of July. The
population of aphid, jassid, thrips attained its peak during second week of August,
Whereas the population of whitefly attained its peak during first week of August.
Aphid, thrips and whitefly showed negative non significant correlation while jassid
showed positive non significant correlation with temperature. Aphid, jassid and thrips
showed negative non significant correlation and whitefly showed significant
correlation with humidity. Aphid, jassid, thrips and whitefly showed negative
significant correlation with rainfall.
Among different treatments tested imidacloprid 17.8% SL @ 150 ml/ha
caused maximum population reduction of aphids. It was followed by dimethoate 30%
EC @ 700ml/ha, acetamiprid 20% SP @ 100g/ha and thiamethoxam 25% WG
@100g/ha, respectively. Imidacloprid 17.8% SL @ 150 ml/ha recorded the highest
population reduction of jassid. It followed by dimethoate 30% EC 700ml/ha,
acetamiprid 20% SP @ 100g/ha, thiamethoxam 25% WG 100gm/ha respectively. In
case of whitefly dimethoate 30% EC 700ml/ha recorded highest population reduction
and found to be the most effective. The treatments in the decreasing order of their
efficacy are imidacloprid 17.8% SL @ 150 ml/ha, thiamethoxam 25% WG 100gm/ha,
acetamiprid 20% SP @ 100gm/ha and Difenthuron 50% WP @ 600gm/ha.
Application of imidacloprid 17.8% SL @ 125 ml/ha was found most effective against
thrips. The treatments in the decreasing order of their efficacy are dimethoate 30% EC
700ml/ha, thiamethoxam 25% WG @100g/ha, acetamiprid 20% SP @ 100g/ha and
*
PG student, Department of Entomology, RCA, Udaipur (Raj.)
**
Assistant Professor, Department of Entomology, RCA, Udaipur (Raj.)
difenthuron 50% WP @ 600gm/ha. While neem oil 2% was found least effective
among all the treatments against aphid, thrips, jassid and whitefly. The highest cost
benefit ratio was obtained from dimethoate 30%EC (1:9.59). It was followed by
imidacloprid 17.8% SL (1:7.85), acetamiprid 20% SP (1:5.79), thiamethoxam 25%
WG (1:4.73), neem oil 2% (1:1.29) and The least cost benefit ratio was obtained from
difenthiuron 50% WP (1:1.04).
Description
Incidence and Management of Major Insect Pest on Cluster bean
Keywords
Citation
Kumar A. And DAngi N.L.