(1) the study of soil quality in rice. An audit found that the nutrient levels in the soil pH value and compare it to your exclusive benchmark rate Nan tha Nakata (2554 (2011): 53-56), and you have the victory sound (2558) Virat [Online] found that the soil in the village's rice paddies. Amphoe samrong Thap Tambon Koh Kaew, Surin province. Soil quality is poor because of the soil nutrient monitoring nutrient levels are low in nitrogen. Phosphorus nutrition section is very low potassium levels, low nutrient and pH value is equal to 6.5 in light acid soil, which fits in the sugarcane and then.
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