The screening of different varieties is one of the key strategies used in Integrated Pest Management to control the insect population and to escape the use of synthetic insecticides. This study was aimed to screen different okra varieties against sucking insect pest complex such as thrip, jassid, aphid, whitefly and mealybug. The experiment was conducted at Agriculture Research Institute Tandojam. The varieties such as Rama Krishna, Silky-460 and Bharat Kawairi were cultivated in RCBD layout and each treatment was replicated five times. The results revealed that the most infested variety was Bharat Kaiwari followed by Silky-460 and Rama Krishna throughout the experimental period. The highest mean population of the sucking insect pests (thrip, jassid, aphid, whitefly and mealybug) was 9.61±0.35, 3.22±0.13, 18.33±0.50, 3.25±0.15 and 3.75±0.19 respectively was observed on Bharat Kaiwari and the lowered on Rama Krishna. However, the attack of aphid was prominent on all okra varieties and overall pest attack was higher in the month of June. Similarly, the co-efficient correlation analysis showed a positive relationship of temperature and humidity (r= 0.012; r = 0.128) with thrip population whereas there was a negative relationship between temperature and humidity with remaining sucking pests. Both jassid and mealybug population indicated a significant difference with temperature. Similarly, relative humidity displayed a significant impact on population of mealybug (r = 0.365) and aphid (r = -0.096). Thus, it could be concluded based on the results that Rama Krishna is the most resistance against sucking insect pests as compared to Silky-460 and Bharat Kaiwairi.
Messing J, Christian T, Michael N, ShevtsovaA, GlockerE, Thomas B, Hensel A. Antiadhesiveproperties of Abelmo-schus esculentus (Okra) immature fruit extract against Helicobacter pylori Adhesion. PLoS ONE 2014; 9(1): 1-10. https://doi.org/10.1371/journal.pone.0084836
Khushk AM, Shar UM, Memon MA. The cultivation of okra in Sindh and its economic view. PARC Technology Transfer Institute Tandojam 2003; 1-2.
Adams CF. Nutritive value of American foods in common units, U.S. Department of Agriculture, Agric Handbook 1975; 425: 29.
Atwal SN. Agricultural pests of India and South East Asia. Kalyani Publishers New Delhi, India 1994.
Shabozoi NUK, Abro GH, Syed TS, Awan MS. Economic appraisal of pest management options in okra. Pak J Zool 2011; 43(5): 869-878.
Basu AN. Bemisia tabaci (Gennadius) Crop pest and principal whitefly vector of plant viruses. Westview Press, Boulder 1995.
Singh S, Choudhary DP, Sharma HC, Mahla RS, Mathur YS, Ahuja DB. Effect of insecticidal modules against jassid and shoot and fruit borer in okra. Indian J Entomol 2008; 70(3): 197-199.
Adilakshmi A, Korat DM, Vaishnav PR. Bio-efficacy of some botanical insecticides against pests of okra. Karnataka J Agri Sci 2008; 21(2): 290-292.
Raina AK. Comparative resistance to three species of Callosobruchus in a strain of chickpea (Cicerarietinum L.). J Stored Prod Res 2001; 7(3): 213-214. https://doi.org/10.1016/0022-474X(71)90009-9
Sarwar M, Ahmad N, Toufiq M. Host plant resistance relationships in okra against fruit borer (Helicoverpa armigera Hubner). Pak J Bot 2009; 41(6): 3047-3052.
Sharma HC, Gowda CL, Stevenson PC, Ridsdill-Smith TJ, Clement SL, Ranga GV, et al. Host plant resistance and insect pest management in okra. In: okra breeding and management. CAB International, Wallingford, Oxon, UK 2007.
Atta ur Rehman, Razaq M, Muhammad W. Incidence and population dynamics of leaf hopper, Amrasca bigutulla bigutulla (Cicadellidae:Homoptera) on four varieties of okra (Abelmoschus esculentus) crop in Multan, Pakistan. Pak J Zool 2015; 47(3): 763-767.
Panikar BK, Patel JR. Population dynamics of thrips on chilli, cotton and pigeon pea. Indian J Ent 2001; 63: 170-5.
Wahla MA, Arif J, Afzal M. The impact of physical factors on the population dynamics of sucking pest complex of “FH-87” cotton variety. Pakistan Entomol 1996; 18: 81-3.
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Copyright (c) 2017 Fahad Nazir Khoso, Naeem UL Haq Shah, Agha Mushtaque Ahmed, Bhai Khan Solangi, Arfan Ahmed Gilal, Muhammad Ishaque Mastoi , Ghulam Mujtaba Khushk