Plant management
     Consider problems and solution for the landuse. Avoid planting in case of having factors risky for failure of crops. For the area where the irrigation and the drainage is prepared and soil amendments are cheap and available, select plants suitable for acid soil and in demand.
Soil management and chemical fertilizer application to plants

Type

Management

Rice

Varieties of rice for growing are KDML , RD13, Morearun, Lookdang, Lookleung, Nanguaonoi, Tammahai, Chornangeung. Apply dolomitic limestone 1.5-2.0 ton/rai. In irrigated area, drain water 4-5 times. Add chemical fertilizer (16-20-0 or 16-16-16) 25-40 kg./rai befor transplanting and add Uria 5-10 kg./rai when its panicle appears.

Sweet Corn

Drop corn seeds 3 seeds/hole. The plot is 25x25 cm. Apply Furada 4 kg./rai and add chemical fertilizer (10-10-10-10) 50-100 kg./rai by dividing it into 2 parts.Add the first part at the bottom of the hole and add the second part 25 days after planting. When sweet corn grows up, add Uria 10 kg./rai
Mango
The plot is 8x9 m. Dig the hole 50x50x50 cm. and add chemical fertilizer (15-15-15) 1-2 kg./plant by dividing it to add 2 times when its age is less than 4 years. When its age is more than 4 years, add chemical fertilizer 2-4 kg./plant.
Coconut
The plot is 8x9 m. Dig the hole 50x50x50 cm. and add chemical fertilizer (15-15-15) 1-2 kg./plant by dividing it to add 2 times when its age is less than 4 years. When its age is more than 4 years. add chemical fertilizer (13-13-21) 2-3 kg./plant  
Pomelo
The plot is 8x9 m. Dig the hole 50x50x50 cm. and add chemical fertilizer (15-15-15) 1-2, 2-4 and 5 kg./plant by dividing it to add 2 times when its age is 2, 2-4 and more than 4 years respectively.

Tangerine  

The plot is 3x9 m. Dig the hole 50x50x50 cm. and add chemical fertilizer (15-15-15) 1-2 and 2-4 kg./plant by dividing it to add 2 times when its age is less than 5 years and more than 5 years.
Acid soil area could be dig as a pond to keep aquatic animals like a carp of the genus Puntius, a snakehead mullet. Drain the water in the pond and scatter dolomitic limestone at the rim and the bottom of the pond to prevent acidity of soil.
 
For more information, please contact Soil ans Water Conservation Division Tel. 02-579-3504
E-mail : scd_4@ldd.go.th or Land Development Regional Office
Land Development station in province