GIS-Based Land Suitability Analysis of Solar-Powered Irrigation System for Rainfed Rice Production Areas In Davao Del Norte


In pursuit of the government’s vision of a comfortable life for every Filipino by creating a vibrant agricultural economy, the Solar-Powered Irrigation System (SPIS) flagship program of the DA has been undertaken. In as much as the DA wanted to provide all farmers, the budget allocation delimits its provision. Hence, detailed information and accurate planning are essential in identifying the most suitable location of SPIS installation to optimize system potential and maximize limited resources. This study aimed to develop a provincial land suitability map of SPIS that will provide a tool for a local farmer, LGUs, and other interested entity in developing good decisions. The result of this study was obtained using the combination of AHP and GIS Weighted overlay technique. The obtained data indicate that 0.10% (334.93 ha), 29.40% (102,696.34 ha), 37.24% (130,078.61 ha), 4.79% (16,746.29 ha) and 28.47% (99,439.60 ha) of Davao del Norte province are positioned extremely, highly, moderately, less and unsuitable areas, respectively. Extremely suitable areas are found in Samal (314 ha), Sto Tomas (15 ha), and Panabo (7 ha), with rainfed rice production areas of 67 ha, 288 ha, and 125 ha, respectively. Moreover, Asuncion and Kapalong got the highest rainfed rice areas of 739, and 721 hectares, respectively, with a total rating for highly suitable and moderately suitable of 90% (22,097.95 ha) and 29% (11,241.40 ha), respectively. Furthermore, the rainfed rice areas intersect mostly to highly suitable regions. And for these reasons, it is highly recommended that these municipalities be prioritized in the establishment of SPIS projects.