Incidence and Management of Shoot and Fruit Borer, Leucinodes orbonalis (Guen.) in Brinjal
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Date
2018
Authors
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Journal ISSN
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Publisher
MPUAT, Udaipur
Abstract
Incidence and Management of Shoot and Fruit Borer, Leucinodes
orbonalis (Guen.) in Brinjal
Rajendra Singh Choudhary* Dr. B.S. Rana An investigation on “Incidence and Management of Shoot and Fruit Borer,
Leucinodes orbonalis (Guen.) in Brinjal” was carried out at the Horticulture Farm,
Rajasthan College of Agriculture, Udaipur for two consecutive years i.e., kharif,
2014-15 and 2015-16. The incidence of shoot and fruit borer on shoot began in the
first week of August (31th SMW) during both the years and reached to its peak
(36.36%) in the second week of September (36th SMW) during 2014-15 and first week
of September (36.91%) during 2015-16. The shoot damage exhibited a significant
positive correlation (r = 0.592) with morning relative humidity during 2014-15 and
significant positive correlation (r = 0.527) with mean temperature during 2015-16.
The incidence of shoot and fruit borer on fruit began in fourth week of September
during both years, reaching the peak of 30.05 and 32.30 per cent on number basis and
27.50 and 29.42 per cent on weight basis in the fourth week of October and third
week of October respectively during both years. The fruit damage had a significant
negative correlation with morning relative humidity on number (r = -640) and weight
basis (r = -645) during 2014-15 and significant positive correlation with maximum
temperature on number (r = 0.642) and weight (r = 629) basis during 2015-16.
On the basis of mean fruit infestation, the order of preference of brinjal
varieties for shoot and fruit borer in a descending order were found as BR-112 >
MHB-80 > Kavach > Pant Brinjal-5 > Pusa Purple Long > Manjarigota > Pant Rituraj
> Pant Samrat. Maximum fruit yield was recorded in brinjal variety Pant Samrat
(34.01 & 33.20 kg/plot), while minimum yield was recorded in variety Kavach (24.83
& 23.84 kg/plot), respectively during Kharif 2014-15 and 2015-16.
*Research Scholar, Department of Entomology, RCA, MPUAT, Udaipur (Raj.)
**Prof. & Head, Department of Entomology, RCA, MPUAT, Udaipur (Raj.)
Evaluation of bio-efficacy of bio-rational insecticide schedules against, L.
orbonalis showed that the treatment schedule T2 (Chlorantraniliprole 18.5 SC @ 150
ml/ha) was most effective, which caused maximum mean percent reduction in larval
population of shoot and fruit borer; while, treatment schedule of T3 (NSKE 5%) was
least effective against shoot and fruit borer during both the years. The minimum fruit
damage on number (5.03 & 5.13%) and weight (4.38 & 4.49 %) basis was recorded in
treatment schedule T2 (Chlorantraniliprole 18.5 SC @ 150 ml/ha); whereas, maximum
fruit damage on number (13.05 & 13.29%) and weight (11.67 & 11.85%) basis was
noted in treatment schedule T3 (NSKE 5%/ha), respectively during both study years.
The maximum marketable yield of 37.05 and 36.72 kg/plot was obtained from
treatment schedule T2 (Chlorantraniliprole 18.5 SC @ 150 ml/ha) and minimum yield
30.34 and 30.14 kg/plot was recorded in treatment schedule T3 (NSKE 5%/ha),
respectively during kharif 2014-15 and 2015-16.
Description
Incidence, Management, Shoot, Fruit Borer, Leucinodes, bonalis, Brinjal
Keywords
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Citation
Choudhary, R.S, And Rana, B.S.