Evaluation of Botanicals and an Alkaloid on Jassids and Aphids of Okra (Abelmoschus esculentus L. (Moench))

The present study was undertaken in the farm of E- Block of Horticultural Department, Agricultural College and Research Institute, Killikulam, Tuticorin during rabi season of 2017–2018. The experiment was laid out in Randomized Block Design (RBD) with seven treatments and three replications. Okra is being attacked by both jassids and aphids throughout the crop period. The pre-treatment observations were recorded the day before application of the spray whereas the post treatment counts were recorded at 3, 7, 14 days after application of the treatments. The treatments were T1- Neem oil (3%), T2- NSKE (5%), T3- Turmeric crude extract (3.5%), T4- Garlic crude extract (5%), T5- Tomatine 1000 ppm, T6- Imidacloprid 17.8 SL (0.018%), T7- Control. Two applications of the spraying were done. The evaluation was done for the sucking pests viz., aphids and jassids. All the treatments showed significant effect over the control. The result revealed that the chemical imidacloprid @ 0.005% and NSKE (5%) were found on par with each other in reducing the pest population followed by neem oil (3%), garlic crude extract (5%), turmeric crude extract (3.5%) and tomatine at 1000 ppm.