An Analysis of Suitable Area for Planting of Sangyod Rice, Ranot District, Songkhla Province by Using Physical Factors from Sangyod Rice Area, Pattalung Province

Abstract

The analysis of suitable area for planting of Sangyod rice in Ranot district, Songkhla province by using physical factors from Sangyod rice area in Pattalung province to be a model for analysis. Analytical factors are derived from research, review the documents, asking the experts including Sangyod rice farmers's opinions in Phatthalung province. After that, bring all the information to focus group process for arrange priority and divide the range of each factor. The participants in the focus group process were different experts including agriculture, Sangyod rice, geoinformatics system and land development. After focus group process, the data were summarized the factors and weighted value of factors that affected the growth of Sangyod rice. The results found that, there are 9 physical factors including: 1) soil drainage (a weighted value is 5), 2) slope (a weighted value is 5), 3) nutrients (a weighted value is 4), 4) soil reaction (a weighted value is 3), 5) annual rainfall (a weighted value is 3), 6) temperature (a weighted value is 2), 7) soil texture (a weighted value is 2), 8) soil depth (a weighted value is 2) and 9) land use (a weighted value is 1). Geographic Information System (GIS) was used for analysis Sangyod rice suitable areas in Ranot district, Songkhla province. The result found that there were 180,776.54 rais (66.02%) are in highly suitable areas of Sangyod rice followed by 64,826.15 rais (23.67%) are in moderately suitable areas, 28,100.13 rais (10.26%) are in unsuitable areas and 123.98 rais (0.05%) are in maginally suitable areas.