Biological Management of South American Tomato Moth (Tuta Absoluta Meyrick) (Lepidoptera: Gelechiidae) In Ethiopia
Journal Title: International Journal of Life Science - Year 2017, Vol 5, Issue 4
Abstract
South American tomato moth (Tuta absoluta Meyrick) is one of the production constraints of Solanaceous crop of tomato (Lycopersicon esculentum Mill.). The trial was conducted using irrigation at Melkassa Agricultural Resarch Center (MARC) during 2014 off season to determine the optimum rate and frequency, and evaluate the efficacy of Bacillus thuringiensis var kurstaki against T. absoluta. The miya variety was used for this experiment. The experiment was laid out in RCBD with three replications. Bacillus thuringiensis was tested at 1 and 2 kg/ha in 7, days of foliage application in addition coragen as the standard check and the untreated check was included for comparison. The different doses of Bacillus thuringiensis were no variation on egg density and agronomic characters such as plant height, number of flower and fruit per cluster, and fruit set percentage. All treatments foliar application minimizing the leaf damaged score compared with untreated check. Coragen and 2kg/ha of B.t in weekly application were gave the maximum marketable yield, lowest fruit infestation percentage and fruit holes with T.absoluta and minimizing yield loss. Bacillus thuringiensis var kurstaki whichare medium efficacy in controlling T.absoluta after the study compared with the standards check. It is an important component of integrated pest management so more extensive studies for integrating of Bacillus thuringiensis with botanicals and biological control methods including predator and parasitoids of control measures against T.absoluta would contribute to sustainable tomato production in Ethiopia.
Authors and Affiliations
Feyissa Begna, Arvind Chavhan
Keywords
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