Bangladesh is a flood prone country where precipitation amount is irregular but sometimes extreme. Among the climatic parameters, precipitation is assumed as one of the vital indicators of ongoing climate change scenarios and is equally important for tea production. In this study, 7 and 9 tea estates of Sylhet and Sreemangal were selected to analyze tea production in relation to extreme precipitation intensity. Precipitation patterns namely 90th, 95th and 99th percentile were analyzed to find out the contribution of extreme precipitation and tea production. To attain the objectives, 3 hourly, daily, monthly, and total precipitation data from 1971 to 2014 were collected from Bangladesh Meteorological Department and Bangladesh Agricultural Development Board. Tea production data were collected from Bangladesh Tea Board, Sylhet. To find out extreme level of precipitation 90th, 95th, 99th percentile precipitation days were identified and analyzed. The analyses show that 1974, 1976, 1977, 1993, 1988, 1990, 2000, 2001, 2002, and 2004 were extreme precipitation years. The average precipitation of Sylhet was higher in 2000 than in 1992 and 2014. In Sreemangal, extreme precipitation was higher in 2014 than in 1992 and 2000. For both the regions, tea production was higher in 2000 and lower in 1992 and 2014. The result shows that more extreme precipitation was responsible for higher amount of tea production. The results suggest that extreme precipitation intensity was one of the responsible factors for higher amount of tea production in Sylhet and Sreemangal.
References
[1]
Ahammed, D. K. M. (2012). Investment for Sustainable Development of Bangladesh Tea Industry—An Empirical Study. Proceedings of BEA XVIIl Biennial Conference, Paper No. 9, Bangladesh, September 2012, 12-16.
[2]
Ahmed, M., & Mamun, M. S. A. (2012). Distributional Pattern and Seasonal Abundance of Major Pests of Tea in Bangladesh. Tea Journal of Bangladesh, 41, 1-10.
[3]
Ahmed, I., Hossain, A., Rowson, A., Haque, D. M. Z., Miah, M. L., & Ahmed, T. (2015). Effect of Precipitation on Yield and Crop Distribution of Tea. Journal of Global Bioscience, 4, 2304-2314.
[4]
Ali, A. (1999). Climate Change Impacts and Adaptation Assessment in Bangladesh. Climate Research, 12, 109-116. https://doi.org/10.3354/cr012109
[5]
Ali, M., Uddin, M. N., Mobin, M. N., & Saha, N. (2014). Effects of Microclimatic Parameter on Tea Leaf Production in Different Tea Estates, Bangladesh Journal of Environmental Science & Natural Resources, 7, 183-188.
https://doi.org/10.3329/jesnr.v7i1.22168
[6]
Anon (1996). Tea from Sri Lanka (pp. 22-29). Colombo, Sri Lanka: Sri Lankan Tea Board.
[7]
Boehm, R., Cash, S. B., Anderson, B. T., Ahmed, S., Griffin, T. S., Robbat, A., Stepp, J. R., Han, W. Y., Hazel, M., & Orians, C. M. (2016). Association between Empirically Estimated Monsoon Dynamics and other Weather Factors and Historical Tea Yields in China: Results from a Yield Response Model. Climate, 4, 20-27.
https://doi.org/10.3390/cli4020020
[8]
BTB (Bangladesh Tea Board) (2015). Statistical Report of Tea in Bangladesh (pp. 1-149). Sreemangal: Bangladesh Tea Board.
[9]
Carr, M. K. V., & Stephens, W. (1992). Climate Weather and the Yield of Tea. In K. C. Willson, & M. N. Clifford (Eds.), Tea: Cultivation to Consumption (pp. 87-135). London: Chapman and Hall. https://doi.org/10.1007/978-94-011-2326-6_4
[10]
Cottam, H. (1997). Tea Cultivation in Assam (pp. 103-107). Colombo.
[11]
Duncan, J. M. A., Saikia, S. D., Gupta, N., & Biggs, E. M. (2016). Observing Climate Impacts on Tea Yield in Assam, India. Applied Geography, 77, 64-71.
https://doi.org/10.1016/j.apgeog.2016.10.004
[12]
Esham, M., & Garforth, C. (2013). Climate Change and Agricultural Adaptation in Sri Lanka: A Review. Climate and Development, 5, 66-76.
https://doi.org/10.1080/17565529.2012.762333
[13]
Hamjah, R. (2014). Climatic Effects on Cotton and Tea Production. Tea Journal Bangladesh, 43, 10-19.
[14]
Hicks, A. (2001). Review of Global Tea Production and the Impact on Industry of the Asian Economic Situation. In Asian Int. Tea Conf. 98 (Vol. 5, pp. 227-231), Singapore.
[15]
Huq, S., Karim, Z., Asaduzzaman, M., & Mahtab, F. (1998). Vulnerability and Adaptation to Climate Change for Bangladesh. Dordrecht: Kluwer Academic Publishers.
https://doi.org/10.1007/978-94-015-9325-0
[16]
Khan, A. Q., Biswas, A., Saha, A. K., & Motalib, M. A. (2012). Soil Properties of Lalmai Hill, Shalban Bihar and Nilachal Hill of Greater Comilla District and Its Suitability for Tea Plantation. Tea Journal Bangladesh, 41, 17-26.
[17]
Mamun, M. S. A. (2011). Development of Tea Science and Tea Industry in Bangladesh and Advances of Plant Extracts in Tea Pest Management. International Journal of Sustainable Agriculture & Technology, 7, 40-46.
[18]
Ochieng, J., Kirimi, L., & Mathnge, M. (2016). Effects of Climate Variability and Change on Agriculture Production: The Case of Small Scale Farming in Kenya. NJAS-Wageningen Journal of Life Sciences, 77, 71-78. https://doi.org/10.1016/j.njas.2016.03.005
[19]
Paul, S. K., Ahmed, M., & Mamun, M. S. A. (2014). Biopesticides: a Potential Tool for the Management of Plant Parasitic Nematodes in Tea. Tea Journal Bangladesh, 43, 24-33.
[20]
Rafiuddin, M., Uyeda, H., & Islam, M. N. (2013). Simulation of Characteristics of Precipitation Systems Developed in Bangladesh during Pre-Monsoon and Monsoon. Proceedings of the 2nd International Conference on Water and Flood Management Held at Dhaka, Bangladesh, March 2009 (Vol. 1, pp. 61-68), Dhaka: Institute of Water and Flood Management, BUET, Publication.
[21]
Rahman, M. M., Kalam, M. A., & Islam, M. M. (2012). Change of Chemical Compositions in Semi-Fermented Tea on Land Elevation. Tea Journal Bangladesh, 41, 11-16.
[22]
Rana, M., Shafee, S., & Karmakar, S. (2007). Estimation of Precipitation in Bangladesh by using Southern Oscillation Index. Pakistan Journal of Meteorology, 4, 7-23.
[23]
Wijeratne, M. A., Anandacoomaraswamy, A., Amarathunga, M. K. S. L. D., Ratnasiri, J., Basnayake, B. R. S. B., & Kalra, N. (2007). Assessment of Impact of Climate Change on Productivity of Tea (Camellia sinensis L.) Plantations in Sri Lanka. Journal of the National Science Foundation of Sri Lanka, 35, 119-126.
https://doi.org/10.4038/jnsfsr.v35i2.3676
