Integrated Management of Tetranychus urticae Koch in Okra: Current Status, Adoption Challenges and Future Perspectives

Authors: Sanjeet Kumar Singh; Kaushal Kumar Pandey; Vishal Yadav; Abhay Singh
Integrated Management of Tetranychus urticae Koch in Okra: Current Status, Adoption Challenges and Future Perspectives
DOI
10.25125/ijoear-jul-2026-29
DIN
IJOEAR-JUL-2026-29
Abstract

Okra (Abelmoschus esculentus L. Moench) is an important vegetable crop cultivated widely in tropical and subtropical regions, with India contributing the largest share of global production. Among the major arthropod pests affecting okra, the two-spotted spider mite, Tetranychus urticae Koch, causes serious economic losses by reducing plant growth, fruit quality, and marketable yield. Effective management of this pest requires an integrated strategy that combines host plant resistance, biological control, cultural practices, judicious use of acaricides, and timely advisory support to farmers. This review critically examines published research on the biology, host range, damage potential, resistance mechanisms, and management approaches for T. urticae in okra. Particular emphasis is placed on integrated pest management (IPM), the role of agricultural extension services, digital advisory systems, and precision agriculture technologies in promoting sustainable mite management. The review also identifies existing research gaps, including the need for standardized resistance-screening methods, economic threshold levels, resistance monitoring, and climate-resilient management strategies. Strengthening collaboration among researchers, extension agencies, and farming communities will be essential for improving the adoption of scientifically validated practices and ensuring sustainable okra production under changing climatic conditions. The findings presented in this review may assist researchers, extension professionals, and policymakers in designing sustainable mite-management programmes suitable for diverse agro-ecological conditions.

Keywords
Tetranychus urticae Okra Integrated pest management Agricultural extension Biological control Host plant resistance Sustainable agriculture Two-spotted spider mite Abelmoschus esculentus Acaricide resistance IPM adoption Farmer Field School.
Download Options
Download Full PDF
Share Article
Facebook Twitter LinkedIn
Introduction

Okra (Abelmoschus esculentus (L.) Moench) is among the most economically important warm-season vegetable crops of South Asia and Africa, valued for its nutritive fruit, short duration and export potential. Global production was estimated at approximately 11.2 million tonnes from about 1.14 million hectares in 2022, with India contributing roughly 70% of world output [11]. This dominant and highly concentrated production share (Figure 1) means that pest constraints affecting Indian okra cultivation carry disproportionate weight for global supply, and that management solutions validated under Indian growing conditions have relevance well beyond the country's own borders. The crop is grown predominantly by small and marginal holders, making its pest-management economics inseparable from questions of smallholder cost, labour and access to advisory support.

Besides its economic value, okra contributes significantly to nutritional security and income generation for resource-poor farming households. Therefore, minimizing production losses caused by spider mites is essential not only for improving productivity but also for enhancing farm profitability and livelihood security.

Realization of this production potential is persistently constrained by arthropod pests, among which the two-spotted spider mite, Tetranychus urticae Koch, ranks as one of the most damaging, with yield losses reported in the range of 7–48% under unmanaged field infestation, and cultivar-wise assessments confirming that susceptible varieties suffer disproportionately greater losses than moderately resistant ones under comparable infestation pressure [30,31]. T. urticae is polyphagous and is notorious for the speed with which it evolves acaricide resistance—a trait linked to its short generation time, high fecundity and arrhenotokous reproduction [35]. Repeated, calendar-based chemical spraying, still the default management approach across much of India's vegetable belt, has produced not only resistance but documented resurgence of the pest following certain acaricide applications [21].

This review draws on a doctoral thesis on okra–mite interactions conducted at Banaras Hindu University [32], together with the wider peer-reviewed literature, to synthesize current knowledge of T. urticae biology, host-plant resistance and management options in okra, to critically examine the extension and adoption dimension that determines whether laboratory-validated IPM packages reach and are used by farmers, and to outline research gaps and emerging technologies that may reshape mite management over the coming decade.

Conclusion

T. urticae remains a persistent constraint on okra productivity, with documented yield losses, well-characterized biology, and a growing though fragmented body of work on varietal resistance, biochemical defense and acaricide efficacy. The doctoral thesis synthesized here indicates that newer acaricide chemistries (clofentazine, cyflumetofen, fenpyroximate) substantially outperform legacy compounds such as dicofol, which additionally triggers resurgence and whose resistance, once established, declines only slowly even after selection pressure is removed [19,32]. Trichome-mediated host resistance offers a complementary, chemical-free line of defense, corroborated across independent screening studies despite methodological differences between them [8,14,22,28,29,30,32].

Yet translation of this research base into farmer practice is constrained less by a shortage of technical options than by adoption barriers—knowledge, cost, training, and socio-economic and extension-delivery constraints documented in the wider IPM literature but under-studied specifically for Indian okra systems [7]. Encouragingly, mechanisms already exist that could carry validated okra-mite IPM to farmers—Farmer Field School-style participatory learning, the Kisan Call Centre and mKisan advisory network, and precision surveillance technologies [10,18,24,27,36]—such that closing the gap between research and practice is substantially a content and validation challenge: populating these existing channels with okra-mite-specific, threshold-based advisory material, while continuing to invest in resistance-mechanism monitoring and trichome-based breeding for a warmer, drier future [3,17].

The findings synthesized in this review emphasize that future progress in spider mite management will depend on integrating biological knowledge with practical extension strategies. Strengthening collaboration among researchers, extension professionals, policymakers, and farmers will facilitate wider adoption of integrated pest management practices and improve the long-term sustainability of okra production systems.

Overall, sustainable management of T. urticae will require an integrated approach that combines scientific innovation, farmer participation, and effective extension support. Continued investment in research, capacity building, and climate-smart pest management strategies will be essential for maintaining profitable and environmentally sustainable okra production.

Agriculture Journal IJOEAR Call for Papers

References
  1. Abou-Zaid, A. M. M., Bakr, E. M., Yassin, S. A., & Hameed, N. A. A. (2012). Abundance of three sap-sucking pests on three eggplant cultivars with utilization of Phytoseiulus persimilis Athias-Henriot against Tetranychus urticae Koch. Acarines, *6*, 49-53.
  2. Ali, W., George, D. R., Shiel, R. S., Sparagano, O. A. E., & Guy, J. H. (2012). Laboratory screening of potential predators of the poultry red mite (Dermanyssus gallinae) and assessment of Hypoaspis miles performance under varying biotic and abiotic conditions. Veterinary Parasitology, *187*, 341-344.
  3. Barnes, C. L., Wickwar, D., Yost, M., Creech, E., & Ramirez, R. A. (2024). The effects of water stress, temperature, and plant traits on the outbreak potential of a specialist and generalist spider mite species (Acari: Tetranychidae). Journal of Applied Entomology, *148*(1), 13-25.
  4. Barman, S., & Ghoshal, S. (2009). Effect of mite feeding in relation to depletion of organic, mineral and inorganic compounds in coconut (Cocos nucifera). Environment and Ecology, *27*(4A), 1746-1748.
  5. Barman, S., & Ghoshal, S. (2011). Biochemical changes in relation to infestation of Tetranychus ludeni Zacher on chilli (Capsicum frutescens). Environment and Ecology, *29*(2A), 881-884.
  6. Bernardi, D., Botton, M., Cunha, U. S., Bernardi, O., Malausa, T., & Garcia, M. S. (2013). Effects of azadirachtin on Tetranychus urticae (Acari: Tetranychidae) and its compatibility with predatory mites (Acari: Phytoseiidae) on strawberry. Pest Management Science, *69*, 75-80.
  7. Deguine, J.-P., et al. (2021). Integrated pest management: Good intentions, hard realities. Agronomy for Sustainable Development, *41*, Article 38.
  8. East, D. A., Edelson, J. V., & Harris, M. K. (1992). Evaluation of screening methods and search for resistance in muskmelon (Cucumis melo L.) to the two-spotted spider mite, Tetranychus urticae Koch. Crop Protection, *11*, 39-44.
  9. El-Adawy, A. M., & El-Esnawy, B. A. (2005). Economic injury level for the two-spotted spider mite, Tetranychus urticae Koch, on cucumber under plastic house conditions. Egyptian Journal of Agricultural Research, *83*(3), 1217-1223.
  10. Food and Agriculture Organization of the United Nations. (n.d.). From farmer field school to community IPM. FAO Regional Office for Asia and the Pacific.
  11. Frontiers in Sustainable Food Systems. (2025). Constraints and opportunities on okra (Abelmoschus esculentus) production in Ethiopia: A review.
  12. Geroh, M. (2007). Ecology and management of Tetranychus urticae Koch on okra (Abelmoschus esculentus L.) [Doctoral dissertation, CCS Haryana Agricultural University].
  13. Ghoshal, S. (2013). Population dynamics and biochemical fluctuations in relation to the infestation of Tetranychus neocaledonicus André on the leaves of Ocimum sanctum. International Journal of Life Science, Biotechnology and Pharma Research, *2*(3), 225-231.
  14. Guo, Z. X., & Yue, H. X. (2009). Effects of trichomes of plant surface on mites and its enlightenment on biological control of pest mites. Chinese Bulletin of Entomology, *46*(2), 210-215.
  15. Hildebrand, D. F., Rodriguez, J. G., Brown, G. C., & Volden, C. S. (1986). Twospotted spider mite (Acari: Tetranychidae) infestations on soybeans: Effect on composition and growth of susceptible and resistant cultivars. Journal of Economic Entomology, *79*(4), 915-921.
  16. Hoque, M. F., Khalequzzaman, M., & Wahedul Islam. (2010). Population dynamics of Tetranychus urticae Koch and Phytoseiulus persimilis Athias-Henriot on three host plants. Pakistan Entomologist, *32*(1), 6-11.
  17. Insects. (2025). Acaricide resistance monitoring and structural insights for precision Tetranychus urticae management. Insects, *16*(5), Article 440.
  18. Journal of Economic Entomology. (2020). Drones: Innovative technology for use in precision pest management. Journal of Economic Entomology, *113*(1), 1-25.
  19. Kim, G. H., Song, C., Chang, B. Y., Park, N. J., & Cho, K. Y. (1995). Stability of dicofol resistance of the two-spotted spider mite, Tetranychus urticae Koch (Acari: Tetranychidae). Korean Journal of Applied Entomology, *34*(1), 61-64.
  20. Kumar, D., Raghuraman, M., Singh, R. N., Santeswari, & Singh, J. (2014). Effect of environmental factors on the population of spider mite Tetranychus urticae Koch on okra in Varanasi region. The Ecoscan, *6*(Special Issue), 231-235.
  21. Kumar, S., Prasad, S., & Singh, R. N. (2002). Resurgence of two-spotted mite, Tetranychus urticae Koch (Acarina: Tetranychidae) due to acaricides and botanicals on okra. Annals of Plant Protection Sciences, *10*(2), 239-242.
  22. Manual, S. K., Sah, S. B., & Gupta, S. C. (2007). Field screening of some okra cultivars against red spider mite Tetranychus neocaledonicus André. Journal of Applied Zoological Research, *18*(1), 59-61.
  23. Minhajul-Haque, Tamanna-Islam, Najmoon-Naher, & Haque, M. M. (2011). Seasonal abundance of spider mite Tetranychus urticae Koch on vegetable and ornamental plants in Rajshahi. University Journal of Zoology, *30*, 37-40.
  24. Ministry of Agriculture & Farmers Welfare. (n.d.). About Kisan Call Centre (KCC). mKisan Portal.
  25. Muhammad Amjad, Bashir, M. H., Gogi, M. D., Muhammad Aslam, Khuram Zia, Khan, M. A., & Ali, L. (2012). Evaluation of some acaricides against the two-spotted spider mite, Tetranychus urticae Koch (Acari: Tetranychidae) on cotton under laboratory and field conditions. Pakistan Entomologist, *34*(2), 125-129.
  26. Park, Y. L., & Lee, J. H. (2002). Leaf damage and tissue damage of cucumber caused by the two-spotted spider mite (Acari: Tetranychidae). Journal of Economic Entomology, *95*(5), 952-957.
  27. Press Information Bureau. (n.d.). mKisan Portal. Ministry of Agriculture & Farmers Welfare, Government of India.
  28. Roseleen, S. S. J., & Ramaraju, K. (2011). Effect of okra entries on biology of two-spotted spider mite Tetranychus urticae (Koch). Annals of Plant Protection Sciences, *19*(1), 67-70.
  29. Roseleen, S. S. J., & Ramaraju, K. (2012). Resistance of okra against two-spotted spider mite Tetranychus urticae Koch. Annals of Plant Protection Sciences, *20*(1), 126-129.
  30. Roseleen, S. S. J., Ramaraju, K., Verma, A. K., Bhardwaj, S. P., & Gupta, P. R. (2010). Host-plant resistance in okra against the two-spotted spider mite Tetranychus urticae Koch. Pest Management and Economic Zoology, *18*(1-2), 179-187.
  31. Sharma, S. S., Kalra, V. K., Dhankhar, B. S., & Kaushik, H. D. (2001). Assessment of yield losses caused by mite Tetranychus urticae Koch on different varieties/cultivars of okra. Haryana Journal of Horticultural Sciences, *30*(1-2), 128-130.
  32. Singh, S. K. (2017). Screening of okra varieties against two-spotted spider mite (Tetranychus urticae Koch) and its management [Doctoral dissertation, Banaras Hindu University].
  33. Suri, K. S., & Singh, G. (2009). Chemical induction of resurgence in sucking insect pests of rice. Journal of Insect Science, *22*(3), 213-226.
  34. Urbaneja, A., Pascual-Ruiz, S., & Pina, T. (2008). Efficacy of five selected acaricides against Tetranychus urticae (Acari: Tetranychidae) and their side effects on relevant natural enemies occurring in citrus orchards. Pest Management Science, *64*(8), 834-842.
  35. Van Leeuwen, T., Vontas, J., Tsagkarakou, A., Dermauw, W., & Tirry, L. (2010). Acaricide resistance mechanisms in the two-spotted spider mite Tetranychus urticae and other important Acari: A review. Pesticide Biochemistry and Physiology.
  36. Waddington, H., Snilstveit, B., Garcia Hombrados, J., Vojtkova, M., Anderson, J., & White, H. (2012). Farmer field schools for improving farming practices and farmer outcomes in low- and middle-income countries: A systematic review. Campbell Systematic Reviews.
  37. Yanar, D., Kadoglu, I., & Gokce, A. (2011). Acaricidal effects of different plant part extracts on the two-spotted spider mite (Tetranychus urticae Koch). African Journal of Biotechnology, *10*(55), 11745-11750.
Article Preview
Quick Actions
Download PDF View References
Article Info
Pages
180-194