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Energy Efficiency and Economic Analysis of an Irrigated Rice Farming System in Ampara District of Sri Lanka: An Assessment for 2018/19 Maha Season

Authors:

N. A. R. J. Perera ,

University of Peradeniya, Peradeniya 20400, LK
About N. A. R. J.

Postgraduate Institute of Agriculture

In-Service Training Institute, Gannoruwa, Department of Agriculture, Peradeniya 20400

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A. K. Karunarathna,

University of Peradeniya, Peradeniya 20400, LK
About A. K.
Department of Agricultural Engineering, Faculty of Agriculture
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B. F. A. Basnayake

University of Peradeniya, Peradeniya 20400, LK
About B. F. A.
Department of Agricultural Engineering, Faculty of Agriculture
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Abstract

This research presents the outcome of energy use efficiency and economic analysis of irrigated rice farming system in Ampara district, during 2018/19 Maha season, which will be useful for the farmers and decision makers. Primary data were collected from 80 farmers covering all the major irrigation schemes of Ampara district by using a structured questionnaire. The data collected on farm input and output volumes, and usage hours were converted to energy values using standard coefficients reported in literature. Economic analysis was done based on the regional cost information collected through the same questionnaire. Labor, machinery, fuel, agrochemicals, seeds and irrigation water were recognized as farm inputs, while rice yield and straw were considered as outputs. Total energy input and total energy output of rice production were 29,689±209.9 MJ/ha and 154,681±3,425.5 MJ/ha, respectively. The highest energy input was accounted by nitrogen fertilizer (44.76%). The system energy efficiency was 5.3±0.13 with a water productivity of 0.8±0.02 kg/m3. The share of the non-renewable energy (67.29%) is higher than the renewable. The average value of total cost of production per hectare, gross return per hectare, benefit-cost ratio and productivity of rice production calculated to be Rs. 134,540.64, Rs. 212,316.36, 1.58 and 0.04 kg/Rs, respectively. The unit cost of production was Rs. 23.45 /kg. Although economic value of major inputs of materials (33.48%), labour (31.59%) and power (34.95%) equally contribute to the cost of production, the shares of these three major inputs in term of energy were 58.32%, 1.50% and 16.24%, respectively. The energy analysis is a convenient tool to quantify efficiency of different rice farming systems overcoming the issues arise from monetary escalations across time and regional boundaries in economic efficiency analysis.
How to Cite: Perera, N.A.R.J., Karunarathna, A.K. and Basnayake, B.F.A., 2021. Energy Efficiency and Economic Analysis of an Irrigated Rice Farming System in Ampara District of Sri Lanka: An Assessment for 2018/19 Maha Season. Tropical Agricultural Research, 32(3), pp.256–264. DOI: http://doi.org/10.4038/tar.v32i3.8489
Published on 30 Jul 2021.
Peer Reviewed

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