| 2.
Perennial or tree planting
In sandy soil area in the highland where there is a good
drainage, it is good to plant mango, cashew nut, tamarind,
custard apple, the Indian jujube, kapok, margosa. For
perennial, it is good to plant eucalyptus,teucaena, and
Acacia mangium.
2.1
Mango Apply chemical fertilizer (15-15-15) 500 g./tree
with animal manure 20 kg./tree in the first year when
Mango starts to grow. The next year, apply chemical fertilizer
half of the first year's amount. Add chemical fertilizer
when the soil moisture is suitable and add it twice a
year, at the coming and the end of rainy season. Add it
around the crown radius with animal manure 20-50 kg./tree
2.2 Cashew nut when cashew nut starts to grow until its
age is 2 years, add chemical fertilizer (12-24-12) 300-800
g./tree when it is 3 years, add chemical fertilizer (12-24-12)
1 kg./tree. When it is 4-6 years, add chemical fertilizer
(15-15-15) 1.5-2 kg./tree. When it is more than 7 years,
add chemical fertilizer (13-13-13) 2-3 kg./tree. Add it
twice a year at the coming and the end of rainy season.
Add it around crown radius with animal manure 20-50 kg./tree
when the soil moisture is suitable.
2.3
Kapok Apply animal manure or compost 12 kg./tree with
chemical fertilizer (15-15-15) 300 g./tree at the bottom
of the hole. When its age is 1-2 years, add chemical fertilizer
(15-15-15) 0.5 g./tree. When it is 3-4 years, add chemical
fertilizer (15-15-15) 1 kg./tree and after 5 years, add
chemical fertilizer (15-15-15) 2 kg./tree around the crown
and divide it to add 2 times. |
3.
Grass planting or grassland for keeping animals
Plain
sandy soil area is suitable for grassland. Varieties of
grass growing well are Ruzi, Star, Ginny and Bubpel. Scatter
mixed Verane-grass in order to increase soil fertity and
animal nutrient. From the standy of planting mixed Verano-Ruzi
by adding chemical fertilizer 20-40 kg./rai, the result
is getting 3 years fresh weight of mixed Verano-Ruzi 6,000-7,000
kg./rai. From soil analysis, the organic matter tends
to increase after the research
4. Growing rice
Sandy
soil in the plain lowland is good for growing rice, especially
in rainy season. For an increase in rice production, make
the plot smooth and dig the furrow. Reclaim soil fertility
by applying organic fertilizer like compost or animal
mansure 2-3 ton/rai or green mansure like Sesbania rostrata,
crotalarin. Or incorporate stubbles with chemical fertilizer
(16-16-8) 20-30 kg./rai. If apply only chemical fertilizer,
add it 75-100 kg./rai
Consideration
for applying only Nitrogen in sandy soil
-
Divide it to ad several times.
-
Select fertilizer that melt slowly.
-
Add organic matter like compost, animal manure, crop residue
in order to prevent nutrient from begin leached and increase
the capacity of soil's holding water.
-
Use mulching like rice straw, hush or plastic to cover
soil in order to keep soil moisture.
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