~ 647 ~ International Journal of Chemical Studies 2021; 9(1): 647-653 P-ISSN: 2349–8528 E-ISSN: 2321–4902 www.chemijournal.com IJCS 2021; 9(1): 647-653 © 2021 IJCS Received: 30-10-2020 Accepted: 09-12-2020 Vaishnavi R Tathode Post Graduate Student, Department of Agricultural Entomology, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola, Maharashtra, India RS Wasu Post Graduate Student, Department of Agricultural Entomology, Mahatma Phule Krishi Vidyapeeth, Rahuri, Maharashtra, India Pradnya V Dabhade Post Graduate Student, Department of Agricultural Entomology, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola, Maharashtra, India Dr. SK Aherkar Professor of Entomology, Department of Agricultural Entomology, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola, Maharashtra, India Sirisha V Thakare Post Graduate Student, Department of Plant Pathology, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola, Maharashtra, India Poonam H Deshmukh Post Graduate Student, Department of Agricultural Entomology, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola, Maharashtra, India Corresponding Author: Vaishnavi R Tathode Post Graduate Student, Department of Agricultural Entomology, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola, Maharashtra, India Evaluation of effect of non-pesticidal methods on population of sucking pest complex on okra in comparison with chemical control Vaishnavi R Tathode, RS Wasu, Pradnya V Dabhade, Dr. SK Aherkar, Sirisha V Thakare and Poonam H Deshmukh DOI: https://doi.org/10.22271/chemi.2021.v9.i1i.11301 Abstract Investigations were carried out to evaluate phototropical, mechanical and botanical control measures in comparison with chemical treatment for managing sucking pest complex of okra under field condition in Dr. PDKV, Akola during kharif, 2019. The results regarding the cumulative effect revealed that treatment Recommended insecticidal spray (I st Spray and III rd Spray with Imidacloprid 17.8% SL, II nd Spray and IV th Spray with Fenvalerate 20% EC) emerged as the most effective treatment against aphids, leafhoppers and whiteflies with realized yield of 52.23 q/ha. It was at par with non-pesticidal treatment Removal of infested shoots + Light traps + NSE (5%) + Yellow sticky trap with yield of 44.49 q/ha followed by Light traps + NSE (5%) in case of leafhopper population whereas in case of aphid and whitefly population treatment Removal of infested shoots + NSE (5%) + Yellow sticky trap at 3, 7 and 14 days after application. This treatments can be better alternative for organic farmers. Keywords: Aphid, leafhopper, whiteflies, insecticide, NSE 5%, yellow sticky trap 1. Introduction Okra, Abelmoschus esculentus (L.) Moench a tall growing vegetable belongs to family Malvaceae, an economically important vegetable crop grown in tropical and sub-tropical parts of the world. Whose A. esculentus (L.) Moench species are cultivated commercially in India. Okra fruits are principally good source of vitamins, mineral, also have various medicinal properties, use as fuel, useful in paper industry and it’s seed used as substitute for coffee in some countries (Gemede et al., 2015) [6] . At present okra is cultivated on an area of 5,09,020 ha with an annual production 60,94,940 MT with productivity of 12 MT/ha in India. The major okra producing states are Gujrat, Maharashtra, Andhra Pradesh, Uttar Pradesh, Bihar, Orissa, West Bengal, Karnataka and Assam. In Maharashtra, okra occupies prominent position covering an area of 13.98 thousand ha with an annual production of 139.40 thousand MT with productivity 9.97 MT/ha in 2017-18 providing continuous and good source of income to the farmers. In Maharashtra okra is mainly grown in Pune, Jalgaon, Thane, Nashik, Satara, Aurangabad, Solapur, Dhule and Osmanabad districts (Anonymous, 2018) [2] . Growers of okra frequently complain yield losses due to insect pests. The pest complex of okra varies from region to region and the number of recorded species ranges from 13 to 72 species of insects of infesting on okra depending on the agro- climatic conditions. The recorded yield losses are up to 32.06 to 56.0 per cent due to Amrasca (sundapteryx) biguttula (Ishida), 94.0 per cent by Bemisia tabaci (Gennadius), 54.04 per cent by Aphis gossypii (Glover) and Earias spp. 36 to 90 per cent (Meenambigai et al., 2017) [9] . To manage these pests there is abusive use of broad spectrum chemicals which lead to tribulations of resistance, resurgence of secondary pest, phyto-toxicity, toxicity to beneficial organisms, intoxication of farm personnel and environmental pollution. In vegetable crops like okra, there is always little time lag between pesticide application and harvest. Thus, the use of pesticides at fruiting stage and non- adoption of safe waiting period, leads to possible accumulation of pesticide residues. During recent years, the problems of pesticide residues in harvested produce of okra assume importance.