1. to use the rice irrigation district Soil pH value is less than the rate of 1.5 tons of cement to use 4.0/plantation soil pH between 4.0-4.5 use at a rate of 1 ton/Rai. County agricultural soil pH value of water is less than 4.0 using mortar at a rate of 2.5 tons/hectares-pH value of soil between 4.0-4.5 1.5 tons of cement to use procedural farm/rate of adjustment of the soil acidic. After the cement screeds, do Nam, plough and frozen processed in about 10 days and then Nadia drained to wash toxins and water detention to await black embroidery.
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