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        <dc:title>Insect Antifeedants And Growth Inhibitors From Azadirachta Indica And Plumbago Zeylanica</dc:title>
        <dc:creator>Sharma, H C</dc:creator>
        <dc:creator>Leuschner, K</dc:creator>
        <dc:creator>Sankaram, A V B</dc:creator>
        <dc:creator>Gunasekhar, D</dc:creator>
        <dc:creator>Marthandamurthi, M</dc:creator>
        <dc:creator>Bhaskaraiah, K</dc:creator>
        <dc:creator>Subrahmanyam, M</dc:creator>
        <dc:creator>Sultana, N</dc:creator>
        <dc:subject>Agriculture-Farming, Production, Technology, Economics</dc:subject>
        <dc:subject>Entomology</dc:subject>
        <dc:description>Solvent extracts of dlfferent parts of the neem tree (Azadlrachta lndica A. 3uss)&#13;
were bioassayed for thelr antlfeedant properties agalnst flrst- and thlrd-instar&#13;
larvae of Mythimna reparata. Fraction 'C', obtalned from an ethanollc extract of&#13;
the shade-drled neem seeds (Hyderabad, India) was the most effective phagodeterrent&#13;
under glasshouse, laboratory and, to a 11mlted extent, fleld conditions.&#13;
Fractlon 'C' was further purlfled to fractlon 'M', whlch was subjected to column&#13;
chromatography (silica gel) result~ng In IG fractions, AI-l to AI-14. Fractions&#13;
AI-9, AI-10 and AI-11 were found to be b~olog~calalyc tive, reduclng leaf feedlng&#13;
and larval weight consrderably. None of the treated larvae whlch fed on leaf&#13;
dlscs treated wlth the fractions and extracts 'C' and 'M' could pupate. The retentlon&#13;
tlme of the malor component of AI-10 on a p BONDAPAK C18 10 u, 3.9&#13;
mm ID, 30 cm column (hlgh performance liquid chromatography) was close to&#13;
that of azadlrachtln. Spectral lnvestlgatlons revealed that this major component&#13;
of A1 1s dlfferent from the antifeedants reported earher from A, indica and Melia&#13;
azedarach. It has been des~gnated as vepaol (the Telugu name for neem IS vepa),&#13;
and some aspects of 11s structure are discussed. Studles relatlng to the effectiveness&#13;
of fraction 'G' on the oriental rmyworm, Mythrmna reparata, and other sorghum pests are presented.</dc:description>
        <dc:date>1983</dc:date>
        <dc:type>Conference or Workshop Item</dc:type>
        <dc:type>PeerReviewed</dc:type>
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        <dc:language>en</dc:language>
        <dc:identifier>http://oar.icrisat.org/4340/1/CP-149.pdf</dc:identifier>
        <dc:identifier>  Sharma, H C and Leuschner, K and Sankaram, A V B and Gunasekhar, D and Marthandamurthi, M and Bhaskaraiah, K and Subrahmanyam, M and Sultana, N  (1983) Insect Antifeedants And Growth Inhibitors From Azadirachta Indica And Plumbago Zeylanica.  In: Natural Pesticides from Neem Tree and other Tropical Plants Proceeding of the 2nd International Neem Conference, 1986, GTZ. Eschborn.     </dc:identifier></oai_dc:dc>
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