Bio-intensive management of cucurbit fruit fly on cucumber
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Date
2017
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Publisher
MPUAT, Udaipur
Abstract
The present investigation entitled “Bio-intensive management of cucurbit
fruit fly on cucumber” was carried out at Horticulture Farm, Rajasthan College of
Agriculture, Udaipur during kharif, 2016. To study the host preference of cucurbit
fruit fly five cucurbit hosts viz., cucumber, ridge gourd, sponge gourd, bitter gourd
and spine gourd were grown. Among which sponge gourd and bitter gourd were the
least preferred and the most preferred host to cucurbit fruit fly with 4.60, 6.83 and
4.80 and 66.35, 78.80 and 74.58 mean per cent fruit infestation, respectively and 1.25,
1.75 and 0.75 and 34.50, 36.50 and 32.50 mean ovipositor marks per ten fruits during
the early, mid and late fruiting phase of the crop, respectively.
Cucumber crop during kharif, 2016 was found to be infested by red pumpkin
beetle and cucurbit fruit fly. The population of red pumpkin beetle initiated in the first
week of September (36th SMW), attained two peaks during the crop season first
during the third week of September, 2016 and second during the second week of
October, while that of cucurbit fruit fly infestation initiated in the third week of
September (38th SMW) and attained its peak in second last week of October (43rd
SMW). The pest population of pumpkin beetle and per cent fruit infestation of fruit
fly showed significantly positive (r = 0.665 and 0.669 during morning and evening
hours, respectively) and negative correlation (r = -0.675) with mean temperature,
respectively.
The population of different fruit fly species (B.cucurbitae, B. dorsalis, B.
zonnata, B. tau and D. ciliatus) recorded in Bador-lure and Bacue-lure trap in
cucumber crop revealed that out of the five different species of fruit fly trapped only
B. cucurbitae and D. ciliatus showed negative and significant correlation with mean
temperature (r = -0.678 and -0.695, respectively). All the cucurbits under study were
recorded to be infested by B. cucurbitae; while, bitter gourd was recorded to be
infested by B. cucurbitae and D. ciliatus. Bitter gourd was recorded to be the most
diverse eco-system with highest Shannon diversity index (1.01) and B. cucurbitae
was the most abundant species with 63.08 per cent relative density.
Description
Bio-intensive management of cucurbit fruit fly on cucumber
Keywords
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Citation
Shivangi and Lekha, 2017