| dc.description.abstract | PRETTY : Study of physical and chemical characteritics of ultisol soil in oil palm
plantation (planted in 2003) with several vegetations, in Pagar Merbau PTP
Nusantara II. Supervised by SUMONO and RISWANTI SIGALINGGING.
Physical and chemical soil characteritics are important factors for the
growth of oil palm. This research was aimed to study physical and chemical soil
characteritics of the oil palm with vegetations of Pueraria javanica, grass, and no
vegetation in Pagar Merbau PTP Nusantara II. The observed parameters were soil
texture, porosity, water content of field capasity, soil permeability, total Nitrogen,
available Phospate, and land Potassium exchange.
The results showed that the soil type was ultisol, with sandy loam texture
and pH of 5,57-5,98 (acid). The soil vegetation had porosity of 42 % at a depth of
5 cm and 40-41 % at a depth of 25 cm. The water content of field capacity was
ranged from 23,2-27 % at a depth of 5 cm and 22,6-26,1 % at a depth of 25 cm.
Permeability was ranged from 4,6-5,95 cm/h. Total N was 0,10 %. P available
was ranged from 13,49-17,09 ppm. K exchange of land was ranged from 0,24-
0,36 me/100g. The soil with no vegetation had porosity of 41 % at a depth of 5 cm
and 39 % at a depth of 25 cm. The water content of field capacity was 22,3 % at a
depth of 5 cm and 22,1 % at a depth of 25 cm. Permeability was 1,39 cm/h. Total
N was 0,08 %. P available was 20,26 ppm. K exchange of land was 0,61 me/100g. | en_US |
