EFFICACY OF TWO ESSENTIAL OIL EXTRACTS AND PREDATORY MITE Phytoseiulus persimilis IN SUPPRESSING THE POPULATION OF THE TWO-SPOTTED SPIDER MITE, Tetranychus urticae KOCH

Two spotted spider mite (Tetranychus urticae) selection to Arabidopsis thaliana

ii Acknowledgements iii Table of

Control of two–spotted spider mite Tetranychus urticae Koch (Acari: Tetranychidae) by some selected chemicals

The experiment was conducted to study the effectiveness of four commonly used chemicals viz., deltamethrin, cypermethrin, malathion and sulphur against two-spotted spider mite (TSSM), Tetranychus urticae Koch on potted bean plants and on excised leaf discs. Mite population remained significantly lower in all treated plots except malathion treatment. The population of T. urticae differed signifi...

interactions of black common bean-two spotted spider mite- predatory mite phytoseiulus persimilis

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Effects of Gamma Radiation on the Biology and Population Suppression of the Two - spotted Spider Mite , Tetranychus urticae Koch Richard

Life Tables of Two-spotted Spider Mite Tetranychus Urticae Koch (acari: Tetranychidae) and Its Predator Phytoseiulus Persimilis Athias-henriot (acari: Phytoseiidae)

Life table of Tetranychus urticae and Phytoseiulus persimilis on bean leaflets were studied under laboratory conditions in three seasons. For T. urticae the development time from egg to adult varied from 7 to 24 days and the highest immature mortality was 78.70 % in winter. Eggs laid by females were 88.1 eggs in autumn and 70.6 eggs in summer season. The gross reproductive rate (GRR) was the hi...