Page 6 - การจัดการวัสดุทางปาล์มที่เหมาะสมรอบทรงพุ่มต่อการเพิ่มอินทรียวัตถุและธาตุอาหารในดินเพื่อปลูกปาล์มน้ำมันในชุดดินระแงะ Suitable management of pilesing leaves in canopy to increase organic matter and nutrition for oil palm plantation in Rangae series.

ห้องสมุดกรมพัฒนาที่ดิน

5

Abstract
Suitable management of pilesing leaves in canopy to increase organic

matter and nutrition for oil palm plantation in Rangae series was conducted in oil palm
plantation 6 years old, Tka-khey-district, Thachang District, Suratthani Province. The
experimental design was randomized complete block with 3 replications and 4
treatments. 1) Do not apply chemical fertilizers according to soil analysis values with do
not pilesing leaves the palm oil around the canopy 2) Do not apply chemical fertilizers

according to soil analysis values with pilesing leaves the palm oil around the canopy. 3)
Apply chemical fertilizers sccording to soil analysis values with do not pilesing leaves the
palm oil around the canopy 4) Apply chemical fertilizers according to soil analysis values

with pilesing leaves the palm oil around the canopy.
The results showed that soil pH increase by applying chemical fertilizers
according to soil analysis values with not pilesing leaves the palm oil around the canopy.
The highest of soil pH was 5.73 percent and highest of organic matter was 2.68 percent.

There was no statistical difference with other treatments. Organic matter was reduced
by method of do not apply chemical fertilizers according to soil analysis values with do
not pilesing leaves the palm oil around the canopy. The highest of available
phosphorus and exchangable potassium 17.16 and 641.55 mg/kg. respectively in

methods of apply chemical fertilizers according to soil analysis values with pilesing
leaves the palm oil around the canopy. There was no statistical difference with other
treaments.