Preferences help
enabled [disable] Abstract
Number of results
2016 | 52 | 265-275
Article title

The Influence of Rainfall Variability on Paddy Production: A Case Study in Batticalloa District

Title variants
Languages of publication
Climate change has become a major concern to human society because of its potentially deleterious impact worldwide. The degree to which rainfall amounts vary across an area or through time is an important characteristic of the climate of an area. This subject area in meteorology is called "rainfall variability”. Changes in amount, intensity and frequency affect the environment and society. The annual rainfall varies from 864 mm to 3081 mm (146 years data) distribution, which has sight variation throughout the district. The study purposes to examine the relationship between rainfall and paddy production. Samplings from 100 households have been gathered by questionnaire survey as primary data and the secondary data has been collected Meteorological Department, Department of Agriculture and published research reports. 146 years rainfall data and 34 years paddy cultivation data has been utilized to analyse the result. Accurate statistical methods have been used to find the variability that includes correlation and trend analysis of 3, 5 years moving average of standard deviation. As the result, the study finds that through the 3, 5 years moving average had shown high drier seasons of the years. The paddy production was very high in Maha season but this was very low in Yala season because of the rainfall variability. By the correlation between rainfall and paddy production, the significant value is positive in Maha season and this is negative in Yala season. However, both are having the different significance each other. Thus, even the rainfall was highly influenced to the higher production, this is impossible in each time. Therefore, the development of irrigation tanks and channels, rainwater harvesting and proper management would be supported to more production in Yala season.
  • Department of Geography, South Eastern University of Sri Lanka, Oluvil, #32360, Sri Lanka
  • Department of Geography, South Eastern University of Sri Lanka, Oluvil, #32360, Sri Lanka
  • [1] R.M. Adams, B.H. Hurd, S. Lenhart, N. Leary, Effects of Global Climate change on Agriculture: An Interpretative Review, Clim Res 11 (1998) 19-30.
  • [2] N. Banda, The impact of climate change on paddy production in Sri Lanka: with reference to Anuradhapura District, International Conference on Social Sciences 2013, University of Kelaniya Accessed: 11 December 2015, Available from:
  • [3] L. Chandrapala, Long term trends of Rainfall and Temperature in Sri Lanka, Co. Ltd, Ceylon (1966).
  • [4] Department of Agriculture, Government of Sri Lanka, (2006) Accessed: 14 November 2015, Available from:
  • [5] T.K. Fernando, Impacts of Climate change on Paddy Production in Sri Lanka, Department of Meteorology, Colombo 7, Sri Lanka (2000) 169-176.
  • [6] A. Harzallah, J. O. Rocha de Aragao, R. Sadourny, Inter annual Rainfall Variability in North-East Brazil: Observation and Model Simulation, International Journal of Climatology, 16 (1996) 861-878.
  • [7] B.A. Mc Carl, R.M. Adams, B.H. Hurt, Global Climate change and Its Impact on Agriculture, (2001) Accessed: 21 October 2015, Available from:
  • [8] R.A. Mendelsohn, Dinar, A. Sanghi, The effect of development on the climate sensitivity of agriculture, Environment and Development Economics 6 (2001) 85-101.
  • [9] M. Munasinghe, Sustainable development and climate change: applying the sustainomics transdisciplinarymeta-framework, International Journal of Global Environmental Issues 1 (2001) 13-55.
  • [10] F. Tao, Y. Hayashi, Z. Zhang, T. Sakamoto, M. Yokozawa, Global Warming, Rice Production and Water use in China: Developing a Probabilistic Assessment Agric. Forest, Meteorol. 148 (2008) 94-110.
  • [11] S. Thiruchelvam, Efficiency of Rice Production and Issues Relating to cost of Production in the Districts of Anuradhapura and Polonnaruwa, J. Natn. Sci. Foundation Sri Lanka 2005, 33(4) (2005) 247-256.
  • [12] Yoshino, M. Masatoshi, Suppiah, Ramasamy, Rainfall and Paddy Production in Sri Lanka, (1984) 9-20.
Document Type
Publication order reference
YADDA identifier
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.