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The Potential of Using Insecticidal Properties of Medicinal Plants Against Insect Pests |
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Hojat Khoshnoud,
Mahdi Ghiyasi,
Reza Amirnia,
Shiva Sadig Fard,
Mehdi Tajbakhsh,
Hojat Salehzadeh and Parisa Alahyary |
Abstract:
In this study, botanicals extracted from two the species
of family Scrophulariaceae, Verbascum cheiranthifolium Boiss and Verbascum speciosum Schard, were examined for their effect
on mortality and progeny production against adults of Sitophilus oryzae
(L.). The plant extracts were applied at five dose rates, which 0.25,
0.5, 1.0, 2.0 and 3% (w/v). Adults of S. oryzae was exposed
to the treated wheat at 25 °C and 65% RH and mortality was assessed
after 24 h, 48 h, 7 day, 14 day and 21 day of exposure. Then all adults
were removed and the treated substrate remained at the same conditions
for an additional 45 day after this interval, the commodity was checked
for progeny production. In use two extracts the mortality of adults increased
with the increase of dose and exposure interval so that; mortality was
100% after 21 days of exposure at the highest dose rate. Results indicated
that applied of V. cheiranthifolium extract was more effective
than V. speciosum against adult insects. Interestingly, in two
cases complete suppression (100% reduction) of the progeny production
(F1) was observed in the treated wheat than in control even in the lowest
dose rate. Therefore, our results indicate that these medicinal plants
can be used for protection of stored grain from infestations of stored-product
insect pests.
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How to cite this article:
Hojat Khoshnoud, Mahdi Ghiyasi, Reza Amirnia, Shiva Sadig Fard, Mehdi Tajbakhsh, Hojat Salehzadeh and Parisa Alahyary, 2008. The Potential of Using Insecticidal Properties of Medicinal Plants Against Insect Pests. Pakistan Journal of Biological Sciences, 11: 1380-1384.
DOI: 10.3923/pjbs.2008.1380.1384
URL: https://scialert.net/abstract/?doi=pjbs.2008.1380.1384
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