Variability of diversion-type communal irrigation systems in sustaining rice production
2002
Angeles, H.L. | Fajardo, E.C. (Central Luzon State Univ., Munoz, Nueva Ecija (Philippines))
The study was conducted to determine the viability of six diversion-type communal irrigation systems (CIS) to sustain rice production in Pangasinan and Nueva Ecija [Philippines]. The study used the irrigators' association (IA) as the main variable in determining the viability. The number of members per IA included in the study ranged from 96 to 520 covering an area ranging from 104 to 1,100 ha or a total of 2,049 ha for the six diversion-type (CISs). The mean rice yield was 3.640 t/ha. In terms of organizational viability, five ofthe IAs increased in membership from the time of its organization, while one maintained the same number of members. A total of nine projects were implemented. The IAs were found to be financially viable, as shown in the computed financial viability index of values greater than 1. The irrigation service fees (ISF) collection efficiency of the three IAs was high at 47%. Although farmer satisfaction on water distribution was high (59%), majority were not satisfied with their production performance. The study suggested the need to develop programs to sustain rice production activities such as water pilferage control, water conservation programs, and activities to improve irrigation efficiency and cropping intensity. Training courses/seminars on rice production and pest control management should be conducted to help farmers increase their harvest
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