|Author:||Khan, M. A. ; Muhammad, Shafeeq ; Awan, I. U.|
|Book Group Author:||NA|
A study was conducted with wheat in Islamabad, Pakistan, during 2002-03 to investigate the pattern of energy use and determine its relationship with the crop production under 3 methods of irrigation: basin complete irrigation system (BCIS), narrow bed irrigation system (NBIS) and broad bed irrigation system (BBIS). The sources of energy input were human labour and tractor. Water, energy and economic use efficiencies were calculated for each method. BBIS consumed the maximum energy, had the highest yield and water use efficiency (WUE). Similarly, the combined (water and energy) use efficiency remained the highest in BBIS (0.55g/m3-kWh). The combined efficiency in NBIS (0.51 g/m3-kWh) was higher than that in BCIS (0.35 g/m3-kWh). Higher water use efficiency (1.25) and higher energy use efficiency (31.69) of BBIS produced good effects on economic efficiency; therefore, the benefit:cost ratio (BCR) of this system was also higher (0.97) compared to NBIS (0.73). The lowest BCR (0.42) was recorded in BCIS.
|Pages:||693 - 699|
|Journal:||Sarhad Journal of Agriculture|
cost benefit analysis, crop yield, economic analysis, energyconsumption, irrigation systems, labour, raised beds, tractors, useefficiency, water use efficiency, wheat, Pakistan, Triticum, Triticumaestivum, South Asia, Asia, Developing Countries, Commonwealth ofNations, Triticum, Poaceae, Cyperales, monocotyledons, angiosperms,Spermatophyta, plants, eukaryotes, energy use, energy utilization,labor, Agricultural Economics (EE110), Natural Resource Economics(EE115) (New March 2000), Input Utilization (Microeconomics) (EE145),Labour and Employment (EE900), Field Crops (FF005) (New March 2000),Plant Water Relations (FF062), Plant Production (FF100), Soil WaterManagement (Irrigation and Drainage) (JJ800) (Revised June 2002)[formerly Soil Water Management], Agricultural and Forestry Equipment(General) (NN400), Energy (PP100)