Abstract:
In the present work, systemic and contact toxicity of garlic
emulsion and garlic with green water extract was evaluated on cotton
aphid Aphis gossypii Gol.
The study was carried out on okra plant which was grown in
polyethylene bags inside a greenhouse at the faculty of agricultural
studies, Shambat during the period from January to March 2004.
The plants were infested with aphids and the effects of garlic
and garlic with green chilli emulsions were studied by direct spraying
to the okra foliage. The two emulsions were used at the following
concentrations 2.5%, 5% and 10% in addition to malathion 57% in a
concentration of 3cm3 /L: the latter was used as a reference standard
product.
The results obtained were statistically analysed and the
following findings were shown: malathion was found to be the most
effective compared to garlic and garlic with green chilli emulsions.
With regared to garlic emulsion, the concentration 10% was found to
be more effective than 2.5%and 5% .The same results were found for
garlic with green chilli in which 10% concentration was more
effective than2.5% and5%. The10% concentration of garlic with chilli
appeared more effective than garlic alone.
