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1 Sison, J. F.; Guino, R. A.. 1984. An assessment of cost and performance of various types of irrigation systems in the Philippines. Final report submitted to the Asian Development Bank, as a sub- project component of the project "Assessment of Food Demand and Supply Prospects and Related Strategies for Development Member Countries of ADB", 31 May 1984. 91p.
(Location: IWMI-HQ Call no: P 561 Record No: H0858)
2 Guino, R. A.; Gonzales, L. A. 1989. Irrigation investment and crop diversification: A system level analysis. In Valera, A. (Ed.) Crop diversification in irrigated agriculture in the Philippines: Proceedings of a national workshop, Puerto Azul Beach and Country Club, Ternate Centre, The Philippines, 5-9 October 1989. pp.209-215.
(Location: IWMI-HQ Call no: IIMI 631.7.2 G732 VAL Record No: H006112)
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The economics of irrigation investment of four national irrigation systems (NIS) were analyzed under rice-mungbean, rice-peanut, rice-corn, rice -garlic and rice-onion cropping patterns. The four NIS were Laoag-Vintar (LVRIS) Bonga Pump No. 2, Tarlac-San Miguel-O'Donnel (TASMORIS), and Upper Talavera River Irrigation System (UTRIS). Results from the benefit cost analyses indicate low levels of benefits and rates of return across cropping patterns for all irrigation systems. This low rate of return as reflected by the low BCRs could be attributed to high capital investment cost and high operation and maintenance costs. Sensitivity analysis was applied to evaluate whether additional investment for rehabilitation design for crop diversification can be offset by the benefits from irrigation non-rice crops. Results showed that low IRRs and BCRs cannot justify investment in rehabilitation.
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