Sites Source Soil propertiesa
1 Suwanaphum
district
This group of soils consists of poorly drained, coarse-textured soils that are salt affected and occupy a low-lying terrain of the north–east
plateau and coastal plain. Most of the areas are paddy rice but the yield is relatively variable due to degree of salinity
2 Pone-Sai district Deep grey clay soils from old alluvium, flat, grayish brown clay loam with mottling top soils, grey brown clay or silty clay and yellow or red
mottling of laterite, slow permeability, poorly drained, moderate to high fertility, moderate phosphorous and potassium availability,
neutral to low acid, water logging in rain season
3 Kaset-Wisai
district
Very deep grey loamy soils from alluvial deposit, poorly drained to poorly drained, medium textured (silt loam grading to silty clay loam)
soils that developed mostly in the areas of alluvial plain or flood plain