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1 Pascual, C. M.; Francisco, A. N.; Simbahan, G. C.. 1988. Optimum farm ditch density for irrigating diversified crops. Paper presented at the National Workshop on Irrigation Management for Crop Diversification, Ternate, Cavite, Philippines, 5-7 October 1988. 18p.
Diversification ; Crops ; Irrigation design ; Tertiary level irrigation ; Regression analysis / Philippines
(Location: IWMI-HQ Call no: P 168 Record No: H04601)
2 Pascual, C. M.; Francisco, A. N.; Simbahan, G. C.. 1989. Optimum farm ditch density for irrigated diversified crops. 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.75-83.
(Location: IWMI-HQ Call no: IIMI 631.7.2 G732 VAL Record No: H006100)
(0.15 MB)
Regression models were developed to determine the optimum farm ditch density for irrigating diversified crops. Size of turnover service area, shape, factor, orientation of main farm ditches, average farm size and farms with direct access to farm ditches were the physical factors that exhibited significant effects on the length of farm ditches. Optimum farm ditch density in two study sites had an average of 100 meter/ha regardless of size of turnout service area. Since models are subjective, physical and field observations have to be employed. Preliminary results of this study indicate the need for providing on-farm facilities if dry season diversified cropping is to be undertaken in gravity-type-rice-based irrigation systems.
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