Abstract:
Insecticidal properties of Anacardium occidentale L. were investigated. All
CHCh and MeOH extracts of leaves, nut-shells, root-bark and stem-bark extracts
were tested against Valsa ceratosperma (Tode Ex Fries) and Tribolium ca.\:taneum
(Hbst. ). At a dose of I 00 μg/spot on the chromatogram and the CH Ch extract of nutshell,
CHCh and MeOH extracts of root-bark and CHCh extract of the stem-bark
showed highest activity against the test fungus, whereas CHC'3 extract of leaf and
MeOH extract of leaf and nut-shell showed no activity.
Both the CHC'3 and MeOH extracts of nut-shells have been found strongly
effective against the test insect T. castaneum while tested by topical application
metho~. However, the MeOH extract of the root-bark was stronger compared to its
chloroform extract. After the nut-shell and the root-bark extract stern-bark extracts
were found active but the methanolic extract was less effective in this regard. In case
of leaf, MeOH extract was stronger than the CHCL3 extract showing a similarity like
the root-bark extract. All the extracts (for both CH Ch and MeOH) of different parts of
A. occidentale, viz. leaf, nut-shell, root-bark and stem-bark were subjected to surface
film test against 'l'. castaneum adults and no trace of activity for the within the given
dose ranges was found.--
Description:
This Thesis is Submitted to the Department of Zoology, University of Rajshahi, Rajshahi, Bangladesh for The Degree of Doctor of Philosophy (PhD)
