Bio-rational Management of Fruit Borer, Helicoverpaarmigera(Hub.) infesting Tomato (Solanum lycopersicum L.)
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Date
2019
Journal Title
Journal ISSN
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Publisher
MPUAT, Udaipur
Abstract
The investigations on “Biorational management of fruit borer, Helicoverpa armigera
(Hub.) infesting tomato (Solanum lycopersicum L.)” were conducted at Horticultural farm
and Department of Entomology, Rajasthan college of Agriculture, Udaipur during 2018. The
farmscaping of tomato crop with marigold as border crop had significant impact on the mean
population of fruit borer and whiteflies. The mean population fruit borer was 0.76 and 1.19
per plant, while whiteflies recorded 5.05 and 7.59 per six leaves in tomato crop with and
without marigold as border crop respectively.
The monitoring of Helicoverpa armigera adults with pheromone and light traps
revealed that highest catches in both traps (20.50 and 95 moths/ per trap/week) coincided
with peak fruiting stage of tomato during mid of October.
The crop transplanted on 10th August had significantly lower incidence of all insect
pests observed,as compared to the crop transplanted on 30th September. The mean population
of whiteflies differed significantly among all the succeeding transplanting dates while other
pest population did not show significant difference among all the succeeding dates.
The overall efficacy of insecticides evaluated after three sprays indicated that
chlorantraniliprole 18.5 SC was most effective in reducing the pest population and per cent
fruit damage. It was followed by indoxacarb 14.5 SC and spinosad 45 SC. The maximum cost
benefit ratio was obtained from chlorantraniliprole 18.5 SC (1:1.285) and was followed by
indoxacarb 14.5 SC (1:1.282) and spinosad 45 SC (1:1.275). The least cost benefit ratio was
obtained from HaNPV 250 LE (1:1.111).
Description
Bio-rational Management of Fruit Borer, Helicoverpaarmigera(Hub.) infesting Tomato (Solanum lycopersicum L.)
Keywords
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Citation
Reddy, Katasani Venkata Nagarjuna. and Yvas, A.