PERFORMANCE OF BHENDI VARIETIES AGAINST MAJOR INSECT PESTS AND SEASONAL OCCURRENCE OF MAJOR INSECT PESTS OF BHENDI
KrishiKosh
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Title |
PERFORMANCE OF BHENDI VARIETIES AGAINST MAJOR INSECT PESTS AND SEASONAL OCCURRENCE OF MAJOR INSECT PESTS OF BHENDI
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Creator |
KRUPADAS, V.D.V
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Contributor |
AYYANNA, T
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Subject |
PERFORMANCE, BHENDI, VARIETIES, INSECT, PESTS, SEASONAL, OCCURRENCE, BHENDI
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Description |
Investigations were made in the college farm and department of Entomology, Agricultural College, Bapatla during 1988-'89 to evaluate 15 different bhendi varieties against major insect pests and their seasonal occurrence on two susceptible varieties. Bhendi varieties PS-2, HB-57, Punjab Padmini, Janardhan and Parbhani Kranti were found moderately susceptible and the remaining varieties were highly susceptible to fruit borer (£jrJjs~~1t~ella) attack. Bhendi varieties which were less preferred (PS-2, HB- 57, Punjab Padmini and Janardhan) by E. vittella recorded prolonged life 1>eriod as well as larval-pupal index and low per cent larval survival, pupal weight, pu?al weight index, per cent adult emergence, growth index, susceptibility index, survival index, fecundity a.nd fecundity index. Hairiness of fruits had no effect on either egg laying or fruit damage by E. vittella. Bhendi varieties HB-57, PB-57 and EMS-8 were found tolerant since they harboured minimum number (among the test varieties) of leafhopper nymphs and low' jassid injury index; while the remaining 12 varieties were susceptible to leafhopper (A. biguttul a blguttula). Dense hairs on lower surface of leaf and high chlorophyll content of leaf affected leafhopper adversely. Parbhani Kranti recorded significantly less fruit damage and leafhopper population than Pusa Sawani but equally susceptible to aphids. Bhendi crop sown on first September was severly infested by fruit borer and aphids where as 1st December sown crop suffered heavily by leafhopper nymphs. Significant correlation was not found between fruit borer incidence and weather parmeters (maximum, minimum temperatures . and relative humidity) while leafhopper nymphs favoured low maximum and minimum temperature and more of relative humidity where as aphids preferred high maximum and minimum temperatures and less relative humidity for their development. |
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Date |
2016-08-18T11:26:30Z
2016-08-18T11:26:30Z 1989 |
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Type |
Thesis
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Identifier |
http://krishikosh.egranth.ac.in/handle/1/72887
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Language |
en
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Relation |
D3398;
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Format |
application/pdf
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Publisher |
ACHARYA N.G. RANGA AGRICULTURAL UNIVERSITY, RAJENDRANAGAR, HYDERABAD.
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