Nonchemical Pest Management Approaches in Tea Ecosystem: Evading the Pesticide Trap

  • Gautam Handique
  • Somnath Roy


Nonconventional pest management involves techniques that do not rely solely on insecticides. These techniques can well be adopted in organic cultivation and in situations where application of pesticides is neither desirable nor economical. In tea, during the last few years, there have been remarkable efforts to adopt nonchemical methods against insect pests crucial for ensuring food safety and environmental quality. The concept of using cultural, physical, mechanical, and biological approaches and botanicals are gaining popularity. Frequent and reliable monitoring and early detection of pest populations are one of the most critical components of this approach. Since spiders are key predators resulting populations of select pests, application of low-volume sprays of pesticides saves their cohorts in tea ecosystems.


Tea Nonchemical Monitoring Cultural Botanicals Microbial Natural enemies 



The authors extend their sincere gratitude to the Director, Tocklai Tea Research Institute, Tea Research Association, for his approval in writing the manuscript. Sincere thanks are due to Mr. Abrar H. Choudhury (Senior Manager, Harmutty Tea Estate, Lakhimpur) for providing photographs of micromanage system, flagging, and spot spraying.


  1. Ahamad S, Narain U (2007) Ecofriendly management of plant diseases. Daya Books, New DelhiGoogle Scholar
  2. Ando T, Ohtani K, Yamamoto M, Miyamoto T, Qin XR (1997) Sex pheromone of Japanese giant looper, Ascotis selenaria cretacea: identification and field tests. J Chem Ecol 23(10):2413–2423CrossRefGoogle Scholar
  3. Antony B, Sinu AP, Das S (2011) New record of nucleopolyhedrosis viruses in tea looper caterpillar in India. J Invertebr Pathol 108:63–67CrossRefPubMedPubMedCentralGoogle Scholar
  4. Barua DN (1994) Science and practice in tea culture. Tea Research Association, Calcutta, p 509Google Scholar
  5. Bashir MA, Alvi AM, Naz H (2014) Effectiveness of sticky traps in monitoring insects. J Environ Agricul Sci 1:1–2Google Scholar
  6. Basu Majumder A (2010) Studies on Hyposidra spp. (Lepidoptera: Geometridae): a new looper pest of tea in Dooars tea plantations, India. Ph.D. thesis, Uttar Banga Krishi ViswavidyalayaGoogle Scholar
  7. Basu Majumder A, Pathak SK, Hath TK (2012) Evaluation of some biorational insecticides against the looper complex, Hyposidra spp. in tea plantations of Dooars, West Bengal. J Biopest 5:91–95Google Scholar
  8. Bian L, Sun XL, Luo ZX, Zhang ZQ, Chen ZM (2014) Design and selection of trap color for capture of the tea leafhopper, Empoasca vitis, by orthogonal optimization. Entomol Exp Appl 151(3):247–258CrossRefGoogle Scholar
  9. Bian L, Yang PX, Yao YJ, Luo ZX, Cai XM, Chen ZM (2016) Effect of trap color, height, and orientation on the capture of yellow and stick tea thrips (Thysanoptera: Thripidae) and nontarget insects in tea gardens. J Econ Entomol 109(3):1241–1248CrossRefPubMedPubMedCentralGoogle Scholar
  10. Borthakur MC, Raghunathan AN (1987) Biological control of tea looper with Bacillus thuringiensis. J Coffee Res 17(1):120–121Google Scholar
  11. Buhler DD, Liebman M, Obrycki JJ (2000) Theoretical and practical challenges to an IPM approach to weed management. Weed Sci 48(3):274–280CrossRefGoogle Scholar
  12. Choudhury AH (2016) Sustainable pest management practices with special reference to tea mosquito bug. Two Bud 62(2):14–16Google Scholar
  13. Chutia BC, Rahman A, Sarmah M, Barthakur BK, Borthakur M (2011) Hyposidra talaca (Walker): a major defoliating pest of tea in North East India. Two Bud 59:17–20Google Scholar
  14. Dang MV (2004) Soil–plant nutrient balance of tea crops in the northern mountainous region, Vietnam. Agric Ecosyst Environ 105(1–2):413–418Google Scholar
  15. Das GM (1959) Occurrence of red spider mite in relation to cultural practices in North-East India. Two Bud 6(4):3–10Google Scholar
  16. Das GM (1965) Pest of tea in North-East India and their control. Tocklai Experimental Station, Tea Research Association, Jorhat, pp 169–173Google Scholar
  17. Das S, Mukhopadhyay A (2008) Host based variation in life cycle traits and general esterase level of the tea looper Hyposidra talaca (Walker)(Lepidoptera: Geometridae). J Plant Crop 36(3):457–459Google Scholar
  18. Das R, Chutia BC, Sarmah M, Rahman A (2010a) Effect of neem kernel aqueous extract (NKAE) on growth and development of red slug caterpillar, Eterusia magnifica butl in tea in North-East India. India J Biopest 3(2):489Google Scholar
  19. Das S, Mukhopadhyay A, Roy S (2010b) Morphological diversity, developmental traits and seasonal occurrence of looper pests (Lepidoptera: Geometridae) of tea crop. J Biopest 3(Special Issue):16Google Scholar
  20. De D, Mukhopadhyay A (2008) Pathogenicity of two strains of Bacillus infecting the lepidopteran tea pests Buzura suppressaria and Eterusia magnifica in Darjeeling foothill region. J Plant Crop 36(3):408–413Google Scholar
  21. Du DM, Wu YX, Gan ZY, Liu MY (1984) Study on the utilization of Adoxophyes orana granulosis virus in tea plantation. J Tea Sci 4:39–44Google Scholar
  22. Dutta P, Reddy SGE, Borthakur BK (2013) Effect of neem kernel aqueous extract (NKAE) in Tea Mosquito Bug, Helopeltis theivora (Waterhouse, 1886)(Heteroptera: Miridae). Munis Entomol Zool 8(1):213–218Google Scholar
  23. Fan S, Libo F, Hua C, Lifang H, Pingsheng W (2005) Balanced fertilization for tea production in Yunnan. Better Crops 89(2):25–27Google Scholar
  24. Gurusubramanian G, Rahman A, Sarmah M, Roy S, Bora S (2008) Pesticide usage pattern in tea ecosystem, their retrospects and alternative measures. J Environ Biol 29(6):813–826PubMedPubMedCentralGoogle Scholar
  25. Han B, Zhang QH, Byers JA (2012) Attraction of the tea aphid, Toxoptera aurantii, to combinations of volatiles and colors related to tea plants. Entomol Exp Appl 144(3):258–269CrossRefGoogle Scholar
  26. Hazarika LK, Bhuyan M, Hazarika BN (2009) Insect pests of tea and their management. Annu Rev Entomol 54:267–284CrossRefPubMedPubMedCentralGoogle Scholar
  27. Hiromori H, Yaginuma D, Kajino K, Hatsukade M (2004) The effects of temperature on the insecticidal activity of Beauveria amorpha to Heptophylla picea. Appl Entomol Zool 39(3):389–392CrossRefGoogle Scholar
  28. Ho HY, Tao YT, Tsai RS, Wu YL, Tseng HK, Chow YS (1996) Isolation, identification, and synthesis of sex pheromone components of female tea cluster caterpillar, Andraca bipunctata Walker (Lepidoptera: Bombycidae) in Taiwan. J Chem Ecol 22(2):271–285CrossRefPubMedPubMedCentralGoogle Scholar
  29. Ho HY, Tsai RS, Wu CH, Chow YS (2003) Quantification and Bioassay of Components in the Sex Pheromone Gland of the Tussock Moth, Orgyia postica (Lepidoptera: Lymantriidae) in Taiwan. Formosan Entomol 23:171–178Google Scholar
  30. Hong BB (1998) A list of viruses of tea pests discovered in tea garden in China. J Tea 24:82–84Google Scholar
  31. Ishii T, Nakai M, Okuno S, Takatsuka J, Kunimi Y (2003) Characterization of Adoxophyes honmai single-nucleocapsid nucleopolyhedrovirus: morphology, structure, and effects on larvae. J Invertebr Pathol 83(3):206–214CrossRefPubMedPubMedCentralGoogle Scholar
  32. Ishii T, Takatsuka J, Nakai M, Kunimi Y (2002) Growth characteristics and competitive abilities of a nucleopolyhedrovirus and an entomopoxvirus in larvae of the smaller tea tortrix, Adoxophyes honmai (Lepidoptera: Tortricidae). Biol Control 23(1):96–105CrossRefGoogle Scholar
  33. Kakoki S, Kamimuro T, Tsuda K, Sakamaki Y (2018) Use of a lower-volume, surface pesticide spray conserves spider assemblages in a tea field. J Econ Entomol 111(4):1595–1604CrossRefPubMedPubMedCentralGoogle Scholar
  34. Kakoty NN, Rahman MA, Sarmah M, Singh K (1993) Evaluation of antifeedant property of a few commercial neem formulations against bunch and psychid caterpillars. Two Bud 40:18–20Google Scholar
  35. KAWAI A (1997) Prospect for integrated pest management in tea cultivation in Japan. Jpn Agricul Res Q 31:213–217Google Scholar
  36. Kochansky JP, Roelofs WL, Sivapalan P (1978) Sex pheromone of the tea tortrix moth (Homona coffearia Neitner). J Chem Ecol 4(6):623–631CrossRefGoogle Scholar
  37. Kodomari S (1987) Control of leafrollers with granulosis viruses in tea field: Effectiveness of application of GV mixture of oriental tea tortrix and smaller tea tortrix. Bull Shizuoka Tea Exp Stn 13:39–48Google Scholar
  38. Kodomari S (1993) Microbial control of tea insect pest in Japan. In: Proceedings of the international symposium tea tech 1993. Tea Sci Human Health, Calcutta, pp 153–157Google Scholar
  39. Kogan M (1998) Integrated pest management: historical perspectives and contemporary developments. Annu Rev Entomol 43:243–270CrossRefPubMedPubMedCentralGoogle Scholar
  40. Kou R, Tang DS, Chow YS, Tseng HK (1990) Sex pheromone components of female smaller tea tortrix moth, Adoxophyes sp.(Lepidoptera: Tortricidae) in Taiwan. J Chem Ecol 16(4):1409–1415CrossRefPubMedPubMedCentralGoogle Scholar
  41. Mamun MSA (2011) Development of integrated pest management strategy for tea mosquito bug (Helopeltis theivora Waterhouse) in Bangladesh. J Subtrop Agricul Res Dev 9(1):867–873Google Scholar
  42. Mamun MSA, Ahmed M (2011) Integrated pest management in tea: prospects and future strategies in Bangladesh. J Plant Protect Sci 3(2):1–13Google Scholar
  43. Mochizuki F, Fukumoto T, Noguchi H, Sugie H, Morimoto T, Ohtani K (2002) Resistance to a mating disruptant composed of (Z)-11-tetradecenyl acetate in the smaller tea tortrix, Adoxophyes honmai (Yasuda)(Lepidoptera: Tortricidae). Appl Entomol Zool 37(2):299–304CrossRefGoogle Scholar
  44. Muraleedharan N (1992) Pest control in Asia. In: Willson KC, Clifford MN (eds) Tea. Springer, Netherlands, pp 375–412CrossRefGoogle Scholar
  45. Muraleedharan N (2006) Sustainable cultivation of tea. In: Handbook of tea culture, section, vol 24. UPASI Tea Res Found, Valparai, pp 1–12Google Scholar
  46. Nain AS (2015) Control of loopers through cultural and other practices. Two Bud 62:1–3Google Scholar
  47. Nakai M (2009) Biological control of tortricidae in tea fields in Japan using insect viruses and parasitoids. Virol Sin 24(4):323–332CrossRefGoogle Scholar
  48. Peng HY, Zeng YT, Chen XW, Ge YH, Jin F, Xie TE (1998) Efficacy analysis of viral insecticide of Buzura suppressaria nuclear polyhedrosis virus (BsSNPV). Chinese Journal of Applied Environment and. Biology 4:258–262Google Scholar
  49. Prasad D (2007) Sustainable pest management. Daya Books, New DelhiGoogle Scholar
  50. Radhakrishnan B (2010) Indigenous botanical preparations for pest and disease control in tea. Bull UPASI Tea Res Found 55:31–39Google Scholar
  51. Rahman A, Sarmah M, Phukan AK, Roy S, Sannigrahi S, Borthakur M, Gurusubramanian G (2005) Approaches for the management of tea mosquito bug, Helopeltis theivora Waterhouse (Miridae: Heteroptera). In: Barooah AK, Borthakur M, Kalita JN (eds) Proceedings of the 34th Tocklai Conference ‘Strategies for Quality in the Digital Era’. Tocklai Experimental Station, TRA, Jorhat, Assam, pp 146–161Google Scholar
  52. Ramanjaneyulu GV, Chari MS, Raghunath TAVS, Hussain Z, Kuruganti K (2009) Non pesticidal management: learning from experiences. In: Integrated pest management: innovation-development process. Springer, Dordrecht, pp 543–573CrossRefGoogle Scholar
  53. Roopak Kumar A, Subramaniam MS, Babu A, Muraleedharan N (2010) Bioefficacy of certain plant extracts against the red spider mite, Oligonychus coffeae (Nietner)(Acarina: Tetranychidae) infesting tea in Tamil Nadu, India. Int J Acarol 36(3):255–258CrossRefGoogle Scholar
  54. Roy S, Gurusubramanian G (2011) Bioefficacy of azadirachtin content of neem formulation against three major sucking pests of tea in Sub Himalayan tea plantation of North Bengal, India. Agric Trop Subtrop 44(3):134–143Google Scholar
  55. Roy S, Mukhopadhyay A (2012) Bioefficacy assessment of Melia azedarach (L.) seed extract on tea red spider mite, Oligonychus coffeae (Nietner)(Acari: Tetranychidae). Int J Acarol 38(1):79–86CrossRefGoogle Scholar
  56. Roy S, Muraleedharan N (2014) Microbial management of arthropod pests of tea: current state and prospects. Appl Microbiol Biotechnol 98(12):5375–5386CrossRefPubMedPubMedCentralGoogle Scholar
  57. Roy S, Gurusubramanian G, Mukhopadhyay A (2010a) Neem-based integrated approaches for the management of tea mosquito bug, Helopeltis theivora Waterhouse (Miridae: Heteroptera) in tea. J Pest Sci 83(2):143–148CrossRefGoogle Scholar
  58. Roy S, Gurusubramanian G, Nachimuthu SK (2011a) Anti-mite activity of Polygonum hydropiper L.(Polygonaceae) extracts against tea red spider mite, Oligonychus coffeae Nietner (Tetranychidae: Acarina). Int J Acarol 37(6):561–566CrossRefGoogle Scholar
  59. Roy S, Handique G, Muraleedharan N, Dashora K, Roy SM, Mukhopadhyay A, Babu A (2016a) Use of plant extracts for tea pest management in India. Appl Microbiol Biotechnol 100(11):4831–4844CrossRefPubMedPubMedCentralGoogle Scholar
  60. Roy S, Mukhopadhyay A, Gurusubramanian G (2010b) Field efficacy of a biopesticide prepared from Clerodendrum viscosum Vent. (Verbenaceae) against two major tea pests in the sub Himalayan tea plantation of North Bengal, India. J Pest Sci 83(4):371–377CrossRefGoogle Scholar
  61. Roy S, Mukhopadhyay A, Gurusubramanian G (2011b) Anti-mite activities of Clerodendrum viscosum Ventenat (Verbenaceae) extracts on tea red spider mite, Oligonychus coffeae Nietner (Acarina: Tetranychidae). Arch Phytopathol Plant Protect 44(16):1550–1559CrossRefGoogle Scholar
  62. Roy S, Muraleedharan N, Handique G (2016b) Pests of tea: overview and possibilities of integrated pest management in Indian tea scenario. In: Bag N, Bag A, Palni LMS (eds) Technology for tea improvement: some initiatives, pp 123–193Google Scholar
  63. Roy S, Muraleedharan N, Mukhopadhyay A (2014) The red spider mite, Oligonychus coffeae (Acari: Tetranychidae): its status, biology, ecology and management in tea plantations. Exp Appl Acarol 63(4):431–463CrossRefPubMedPubMedCentralGoogle Scholar
  64. Roy S, Muraleedharan N, Mukhapadhyay A, Handique G (2015) The tea mosquito bug, Helopeltis theivora Waterhouse (Heteroptera: Miridae): its status, biology, ecology and management in tea plantations. Int J Pest Manage 61(3):179–197CrossRefGoogle Scholar
  65. Roy S, Rahman A, Muraleedharan N (2013) Escaping the chemical pesticide trap: non-chemical management of tea pests in north east India. Two Bud 60:1–4Google Scholar
  66. Sachin JP, Selvasundaram R, Babu A, Muraleedharan N (2008) Behavioral and electroantennographic responses of the tea mosquito, Helopeltis theivora, to female sex pheromones. Environ Entomol 37(6):1416–1421CrossRefPubMedPubMedCentralGoogle Scholar
  67. Saito T, Takatsuka J, Shimazu M (2012) Characterization of Paecilomycescinnamomeus from the camellia whitefly, Aleurocanthus camelliae (Hemiptera: Aleyrodidae), infesting tea in Japan. J Invertebr Pathol 110(1):14–23CrossRefPubMedPubMedCentralGoogle Scholar
  68. Sarmah M, Rahman A, Phukan AK, Gurusubramanian G (2006) Prospects in use of neem formulations and biocides in tea pest management in Northeast India. Crop Res 31:20–33Google Scholar
  69. Sarwar M (2015) The killer chemicals as controller of agriculture insect pests: the conventional insecticides. Int J Chem Biomol Sci 1(3):141–147Google Scholar
  70. Shun-yu Z, Jian Y, Jun-yi M (2011) Efficacy of several botanical insecticides against main pests in tea plantation. Northern Hort 11:573–584Google Scholar
  71. Singha DIPENDRA, Singha BABY, Dutta BK (2010) In vitro pathogenicity of Bacillus thuringiensis against tea termites. J Biol Control 24:279–281Google Scholar
  72. Sinu PA, Binu A, Sadhan M (2011a) The occurrence of nucleopolyhedrovirus infecting Hyposidra talaca (Geometridae: Lepidoptera), a tea defoliator from North-East India. Biocontrol Sci Tech 21(7/8):999–1003CrossRefGoogle Scholar
  73. Sinu PA, Mallick S, Mandal P, Talukder TK (2013) Egg-laying pattern of Hyposidra talaca (Lepidoptera: Geometridae) in Northeastern Indian tea plantations: implications for pest management. Int J Trop Insect Sci 33(1):8–13CrossRefGoogle Scholar
  74. Sinu PA, Mandal P, Antony B (2011b) Range expansion of Hyposidra talaca (Geometridae: Lepidoptera), a major pest, to Northeastern Indian tea plantations: change of weather and anti-predatory behaviour of the pest as possible causes. Int J Trop Insect Sci 31(4):242–248CrossRefGoogle Scholar
  75. Sohail A, Hamid FS, Waheed A, Ahmed N, Aslam N, Zaman Q, Islam S (2012) Efficacy of different botanical materials against aphid Toxoptera aurantii on tea (Camellia sinensis L.) cuttings under high shade nursery. J Mater Environ Sci 3(6):1065–1070Google Scholar
  76. Sudoi V, Khaemba BM, Wanjala FME (2001) Nitrogen fertilization and yield losses of tea to red crevice mite (Brevipalpus phoenicis Geijskes) in the Eastern Highlands of Kenya. Int J Pest Manage 47(3):207–210CrossRefGoogle Scholar
  77. Sun JD, Xu DY, Zhang YM (1988) Euproctis pseudo conspersa nuclear polyhedrosis virus and its application in tea plantation. Fujian J Agricul Sci 3:1–9Google Scholar
  78. Sun J, Wu G, Lin A, Zeng M, Xu D, Wang Q (1996) Efficiency of Euproctis pseudoconspersa nuclear polyhedrosis virus (EpNPV) preparation. Entomol J East China 39(1):55–59Google Scholar
  79. Tamaki Y, Noguchi H, Sugie H, Kariya A, Arai S, Ohba M, Mori K (1980) Four-component synthetic sex pheromone of the smaller tea tortrix moth: field evaluation of its potency as an attractant for male moth. Jpn J Appl Entomol Zool 24(4):221–228CrossRefGoogle Scholar
  80. Vasanthakumar D, Roopak Kumar A, Subramaniam MS, Kumar P, Sundaravadivelan C, Babu A (2012) Evaluation of certain leaf extracts against red spider mite, Oligonychus coffeae Nietner (Acarina: Tetranychidae) infesting tea. Int J Acarol 38(2):135–137CrossRefGoogle Scholar
  81. Vreysen MJB, Robinson AS, Hendrichs J, Kenmore P (2007) Area-wide integrated pest management (AW-IPM): principles, practice and prospects. In: Area-wide control of insect pests. Springer, Dordrecht, pp 3–33CrossRefGoogle Scholar
  82. Wang Y, Gao N, Shi L, Qin ZY, He P, Hu DY, Chen Z (2015) Evaluation of the attractive effect of coloured sticky traps for Aleurocanthus spiniferus (Quaintance) and its monitoring method in tea garden in China. J Entomol Acarol Res 47(3):86–90CrossRefGoogle Scholar
  83. Willson KC, Clifford MN (1992) Tea-cultivation to consumption, 1st edn. Chapman and Hall, LondonGoogle Scholar
  84. Witzgall P, Kirsch P, Cork AJ (2010) Sex pheromones and their impact on pest management. Chem Ecol 36:80–100CrossRefGoogle Scholar
  85. Yaginuma D, Hiromori H, Hatsukade M (2004a) Relationship between virulence and adhesion of the entomopathogenic fungus Beauveria amorpha (strain: HpBa-1) to the yellowish elongate chafer, Heptophylla picea (Motschulsky)(Coleoptera: Scarabaeidae). Jpn J Appl Entomol Zool (Japan) 48:101–108CrossRefGoogle Scholar
  86. Yaginuma D, Hiromori H, Hatsukade M (2006) Virulence of the entomopathogenic fungus Beauveria brongniartii to several life stages of the yellowish elongate chafer Heptophylla picea Motschulsky (Coleoptera: Scarabaeidae). Appl Entomol Zool 41(2):287–293CrossRefGoogle Scholar
  87. Yaginuma D, Kuwahara I, Hiromori H, Hatsukade M (2004b) Studies on the properties of the entomopathogenic fungus Beauveria amorpha and control of the yellowish elongate chafer, Heptophylla picea Motschulsky larvae (Coleoptera: Scarabaeidae). Jpn J Appl Entomol Zool (Japan) 48:297–306CrossRefGoogle Scholar
  88. Yajun Y, Zongmao C, Jianyun R, Liang C, Yongwen J (2005) Tea science progress in new century. In: Proc. Int. Symp. Innov. Tea Sci. Sust. Dev. Tea Indust., Hangzhou, China, pp 1–20Google Scholar
  89. Ye GY, Xiao Q, Chen M, Chen XX, Yuan ZJ, Stanley DW, Hu C (2014) Tea: biological control of insect and mite pests in China. Biol Control 68:73–91CrossRefGoogle Scholar
  90. Yongmo W, Feng G, Xianghui L, Feng F, Lijun W (2005) Evaluation of mass-trapping for control of tea tussock moth Euproctis pseudoconspersa (Strand)(Lepidoptera: Lymantriidae) with synthetic sex pheromone in south China. Int J Pest Manage 51(4):289–295CrossRefGoogle Scholar
  91. Yu HB, Lin G (2008) Microbial pesticides and insect semiochemicals for control of tea pests in China. In: Jain N, Rahman K, Baker F (eds) Microbial pesticides and insect semiochemicals for control of tea pests in China. Studium Press (India) Pvt. Ltd., India, pp 197–212Google Scholar
  92. Zhang HG, Tan JC (2004) Tea pests in China and their contaminant-free management. Anhui Scientific and Technical Publishers, Hefei, pp 1–389Google Scholar
  93. Zhang LL, Lin J, Luo L, Fang F, Huang TP, Xu JH, Guan X (2005) Occurrence of Bacillus thuringiensis on the Phylloplane and Screening of Highly Toxic Strains to Tea Pests [J]. J Tea Sci 25:56–60Google Scholar
  94. Zhen CHEN, Yihang GE, Xia LIU, Kuang R (2015) Effect of colored sticky cards on non-target insects. Agricul Sci Technol 16(5)Google Scholar
  95. Zheng MC, Chen LG, Xia SM, Liang DR, Zhao KB, Cai MN, Sun AZ (1985) Viruses of tea pests discovered in Yunnan and Guizhou provinces. J Tea Sci 5(2):39–48Google Scholar
  96. Zhongxian L, Yajun Y, Puyun Y, Zhonghua Z (2012) China’s ‘Green Plant Protection’ initiative: coordinated promotion of biodiversity-related technologies. In: Biodiversity and insect pests: key issues for sustainable management, pp 230–240CrossRefGoogle Scholar

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© Springer Nature Singapore Pte Ltd. 2020

Authors and Affiliations

  • Gautam Handique
    • 1
  • Somnath Roy
    • 1
  1. 1.Department of EntomologyTocklai Tea Research Institute, Tea Research AssociationJorhatIndia

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