31. Group of Soil Series No.31 This
group of soils is well drained, deep and fine-textured derived from fine-grained
elastic rocks. Weathered bed rock commonly occurs at the depth of 125
- 175 cm from soil surface. Soil fertility is moderately low. Soil reaction
is strong to medium acid. Soils in this group are Loei (Lo) and Wang Hai
(Wi) series.
Upland crops and fruit trees are commonly found in the areas. Problems: Low fertility, lack of water in dry season and soil erosion on steep slope, strong acid in some places. Management
for upland crops or vegetables: Upland crops or vegetables will
grow better in leveling ground. Application of 1-2 ton/rai compose fertilizer
or animal manure or mixed green manure (broadcast 8-10 kg/rai sword bean
, 6-8 kg/rai cow pea or 4-6 kg/rai Crotalaria juncia) and mix with soils
before flowering. Chemical or liquid LDD fertilizer will also be applied
according to recommendation . Plants should be grown on the contour or
strip cropping with mulching. Soil should be conserved by vetiver around
the areas. Farm ponds are recommended to preserve water to be used in
dry season. |