Your search found 7 records
1 Kikuchi, M.; Merrey, D. J.; Sakthivadivel, R.; Aluwihare, P. B.. 1992. Irrigation investment trends in Sri Lanka: implications for policy and research in irrigation management. In International Irrigation Management Institute (IIMI). Advancements in IIMI's research 1989-91: a selection of papers presented at Internal Program Reviews. Colombo, Sri Lanka: International Irrigation Management Institute (IIMI). pp.3-36.
(Location: IWMI-HQ Call no: IIMI 631.7.8 G000 IIM Record No: H010754)
(2.65 MB)
2 Aluwihare, P. B.. 1984; 1985. Repairs to the channel system of Dewahuwa Scheme with O & M collection (1984-1985) Unpublished IIMI report. 5p.
(Location: IWMI-HQ Call no: IIMI 631.7.7 G744 ALU Record No: H011419)
3 Kikuchi, M.; Aluwihare, P. B.. 1990. Cost-benefit analysis of some irrigation rehabilitation and water management improvement projects in Sri Lanka: A note on data and estimation. Draft report. 28p.
(Location: IWMI-HQ Call no: IIMI 631.7.7 G744 KIK Record No: H012226)
4 Wijayaratne, C. M.; Panabokke, C. R.; Aluwihare, P. B.; Charles, S. H.; Sakthivadivel, R. 1994. Potential for diversified cropping in the paddy lands of Sri Lanka. Final report. Colombo, Sri Lanka: International Irrigation Management Institute (IIMI). Sri Lanka Field Operations (SLFO) vi, 94p.
Irrigated farming ; Cropping systems ; Crops ; Diversification ; Paddy fields ; Economic aspects ; Institutional constraints / Sri Lanka
(Location: IWMI HQ Call no: IIMI 631.7.8 G744 WIJ Record No: H016010)
5 Kikuchi, M.; Aluwihare, P. B.. 1990. Fertilizer response functions of rice in Sri Lanka: estimation and some applications. Colombo, Sri Lanka: International Irrigation Management Institute (IIMI). 15p. + annex.
(Location: IWMI HQ Call no: IIMI 631.81 G744 KIK Record No: H006935)
Rice fertilizer response functions, at the farm level as well as at the experiment station level, were estimated by type of variety and by type of irrigation condition, and applied to i) explain the long-term growth path of rice production in Sri Lanka after the independence; ii) identify the degree of contribution of the rice varietal improvements to the increase in rice production; iii) check the consistency of the past and current fertilizer recommendations for rice; and iv) examine the possible impacts of fertilizer subsidy withdrawal on rice production in the country. The estimated response functions at the farm level reproduce well the macro growth path of rice production except for the 1970s when new improved varieties performed less satisfactory due to their susceptibility to insect, pest and drought. More than forty percent of the increase in rice production in the last four decades is attributable to the varietal improvements. The past and present fertilizer recommendations for rice are consistent with the response functions estimated. The long-run impacts of withdrawal of fertilizer subsidy in the rice sector would not be large as far as its yield impacts are concerned.
6 Aluwihare, P. B.; Kikuchi, M. 1991. Irrigation investment trends in Sri Lanka: new construction and beyond. Colombo, Sri Lanka: International Irrigation Management Institute (IIMI). xv, 89p.
(Location: IWMI HQ Call no: IIMI 631.7.4 G744 ALU Record No: H009282)
7 Wijayaratna, C. M.; Panabokke, C. R.; Aluwihare, P. B.; Charles, S. H.; Sakthivadivel, R. 1996. Potential for diversified cropping in the rice lands of Sri Lanka. Colombo, Sri Lanka: International Irrigation Management Institute (IIMI). xiv, 105p. (IIMI Country Paper Sri Lanka 14)
Irrigation management ; Irrigated farming ; Rice ; Crops ; Diversification ; Crop production ; Yield ; Economic aspects ; Costs ; Farmer-agency interactions / Sri Lanka
(Location: IWMI HQ Call no: IIMI 631.7.8 G744 WIJ Record No: H020028)
The main objective of this study was to examine and assess the potential for expanding the cultivation of OFCs on rice lands, based on data available over a decade (1982-92) in respect of extents cultivated as well as changes that have taken place on different categories of irrigated lands in the country. The study highlights the great weaknesses of the database on diversified cropping, including basic information such as extents and crop yields.. Establishment and maintenance of an accurate spatial database using a Geographic Information System (GIS) should therefore be given a high priority.
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