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RELATIVE SUSCEPTIBILITY OF DIFFERENT CULTIVARS AND INSECTICIDAL MANAGEMENT AGAINST SUCKING INSECT PEST COMPLEX OF BRINJAL

KrishiKosh

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Title RELATIVE SUSCEPTIBILITY OF DIFFERENT CULTIVARS AND INSECTICIDAL MANAGEMENT AGAINST SUCKING INSECT PEST COMPLEX OF BRINJAL
 
Creator Jadhav, Manish Vishwanathrao
 
Contributor Dubey, V.K.
Pophaly, D.J.
Ganguli, R.N.
Mehta, N.
Chandrakar, (Smt.) G.
 
Description Field studies on "Relative susceptibility of different cultivars and
insecticidal management against sucking insect pest complex of brinjal" was
carried out at horticultural experimental field of Indira Gandhi Agricultural
University, Raipur (C.G.) during the Rabi season, 2001-2002.
Brinjal crop was infested by four sucking insect pests viz. aphid (Aphis
gossypii), jassid (Amrasca biguttula biguttula), thrips (Thrips tabaci) and
white fly (Bemisia tabaci) during entire crop growth period. Incidence of
shoot and fruit borer (Leucinodes orbonalis) recorded during fruiting stage of
the crop. The population of sucking insect pest on brinjal occurred with some
fluctuations from last week of August to second week of February. During
this period, maximum temperature ranged from 24.9°C to 33.6°C, minimum
temperature from 7.7°C to 24.8°C, maximum relative humidity from 79 to
96 per cent, minimum relative humidity from 24 to 87 percent, wind velocity
from 1.5 to 8.2 kmph and bright sunshine from 3.3 to 9.6 hours per day. The
aphid, jassid, thrips and whitefly population had significant negative
correlationship with wind velocity ( r = -0.528, -0.499, -0.692 and -0.570)
and positive with sunshine hours (r= 0.540, 0.581, 0.497 and 0.510) per
day. There was no correlationship with maximum temperature.
None of the varieties, amongst twenty brinjal varieties screened could
be rated as promising against sucking insect pest. However, the varieties
NDBS-18, B-B-71, NDB-28-2, 71-79, BB-40 and ABL-1 is rated as less
susceptible to fruit borer as compared to others. These varieties having light
green leaf colour, leathery texture of leaves, purple fruit colour, long fruits,
fruiting in clusters and soft consistency of pulp. Fruit diameter, calyx length,
pedicel length, thickness of pericarp and thickness of pulp showed positive
relation with fruit damage by shoot and fruit borer on number basis, while,
the fruit length was negatively related to fruit damage.
Among the different insecticides tested; all the foliar applications of
insecticides have shown superiority to soil drenching treatments in reducing
the sucking insect population up to 24 hours after application. The foliar
application of thiamethoxam @ 200 g/ha was most effective which was at par
with imidacloprid @ 200 ml/ha. While, endosulfan @ 1000 ml/ha as the least
effective. Soil drenching application of thiamethoxam @ 400 g/ha was most
effective at three days and onwards with the highest increased yield over
control (53.97%), it was statistically at par with soil drenching application of
thiamethoxam @ 200 g/ha.
 
Date 2017-02-17T11:19:33Z
2017-02-17T11:19:33Z
2002
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/5810001514
 
Language en
 
Format application/pdf
 
Publisher Indira Gandhi Krishi Vishwavidyalaya, Raipur