Repellent Effect of Fungatol and Gamma-T-ol Extracts Derived from Melaleuca alternifolia (Myrtaceae) against Tetranychus urticae Koch (Acari: Tetranychidae) under Laboratory Conditions

In this study, the repellent effect of five different concentrations of Fungatol and Gamma-T-ol extracted from Melaleuca alternifolia (Myrtaceae) known as Tea tree against T. urticae was determined using leaf dipping method under laboratory conditions. In laboratory tests, the leaf discs (5cm diameter) taken from bean (Phaseolus vulgaris L.) were dipped in five different concentrations (1.25, 1.90, 2.20, 2.50 and 3.50%) of Fungatol and (0.25, 0.50, 1.00, 1.50 and 3.60%) of Gamma-T-ol for 5 s. The results were recorded after 2, 6, 24, 48 and 72 hours by counting the number of adults present on each half of the leaf discs. The tests were repeated five times. After 2, 6, 24, 48 and 72 hours, the repellent effect of 3.50% concentration of Fungatol against T. urticae was determined 92.0, 81.3, 71.3, 56.3, 54.9 and 3.60% concentration of Gamma-T-ol against T. urticae was determined 83.1, 79.5, 71.1, 65.7, 55.9%; repectively. Consequently, Fungatol and Gamma-T-ol showed the high repellent effect against T. urticae under laboratory conditions.