The Survey and Analysis of Soil Suitable for Upgrading Pottery Products in Songkhla Lake Areas
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Abstract
The objectives of this study were to 1) survey and analyze the physical and chemical properties of soil suitable for upgrading pottery products and 2) determine potential soil sources for pottery making in the central Songkhla Lake areas. The research procedure included the survey of 200 sample spots and the study of the physical and chemical properties of soil using the potential surface analysis to determine spatial potential. The findings showed that 49 sample spots were distributed in Phatthalung Province and 151 spots in Songkhla
Province. The results of chemical and physical properties of soil revealed that pH values - alkalinity values were between 3 - 8, the average was about 5, the soil temperature was between 28 O C and 32O C, and the mean was 29.89 O C. The most common soil color found was 5Y (Yellow Red) with 53 secondary spots, followed by the color 10 YR (Yellow Red) with 45 spots while the least common color was the color 2.5YR (Yellow Red) with 1 spot. The average of the soil moisture was at 33.71 percent. The average of the soil shrinkage was at 10.034 millimeters. Concerning the low potential soil sources, they were 133 spots: 38 spots in Phatthalung Province and 95 spots in Songkhla Province. For the average potential soil sources, they involved 31 spots: 3 spots in Phatthalung Province and 28 spots in Songkhla Province. Regarding the high potential soil sources, they were 36 spots: 8 spots in Phatthalung Province and 28 spots in Songkhla Province.
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