Please use this identifier to cite or link to this item: http://krishikosh.egranth.ac.in/handle/1/5810038970
Authors: MANJUNATH S. LAMANI
Advisor: Dr. S. B. PATIL
Title: STATUS OF FLOWER BUD MAGGOT, Dasineura gossypii Fletcher (Cecidomyiidae : Diptera) ON COTTON AND ITS MANAGEMENT IN NORTHERN KARNATAKA
Publisher: University of Agricultural Sciences Dharwad
Language: en
Type: Thesis
Pages: 68
Agrotags: null
Keywords: STATUS OF FLOWER BUD MAGGOT, Dasineura gossypii Fletcher (Cecidomyiidae : Diptera) ON COTTON AND ITS MANAGEMENT IN NORTHERN KARNATAKA
Abstract: Cotton known as the “King of Fibre” is an important commercial crop grown in different agro climatic zones of our country. Large scale adoption of Bt cotton and wide range availability of Bt cotton genotypes has not only changed the cultivation profile but also the emergence of secondary pests viz., mirid and midge. With this background in view, the present investigation was carried out to know the status of flower bud maggot Dasineura gossypii (Cecidomyiidiae: Diptera) in Bt cotton at Agricultural Research Station, Dharwad farm, Dharwad. The objectives of investigations were Survey for the incidence of flower bud maggot in major Bt cotton growing districts of northern Karnataka, seasonal incidence in Bt cotton, screening of popular Bt cotton genotypes for their reaction to flower bud maggot and management through insecticide and botanicals. The results revealed that, significantly higher incidence of flower bud maggot was recorded in Dharwad district followed by Gadag and Belgaum, but no incidence was observed in Bellary district. The incidence of flower bud maggot was observed from first week of September and increased gradually reaching its peak during the last week of December and gradually declined from third week of January. Among the different Bt cotton genotypes that were screened, MRC-7351 recorded significantly higher incidence followed by Paras Brahma, Cash and Bullet. On other hand, the Kashinath, MRC-6918, RCH-708 and Vishwanath were recorded comparatively lower incidence of flower bud maggot. Among the insecticides, Profenophos 50 EC @ 2 ml/l and Quinalphos 20 EC @ 2 ml/l were found to be equally effective by recording the lower incidence with a highest cost benefit ratio of 2.39 and 2.35 respectively.
Subject: Agricultural Entomology
Theme: STATUS OF FLOWER BUD MAGGOT Dasineura gossypii Fletcher (Cecidomyiidae: Diptera) ON COTTON AND ITS MANAGEMENT IN NOTHERN KARNATAKA
These Type: M.Sc
Issue Date: 2014-11
Appears in Collections:Thesis

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