| dc.description.abstract | SISCA CHRISTINE PRATIWI PARDOSI: Study of physical and chemical soil
properties in rubber plantation with several vegetations that grow in Gunung Para
PTP.Nusantara III. Supervised by SUMONO and ACHWIL PUTRA MUNIR.
Physical and chemical soil properties are important factors for the growth of
rubber plant. This research is aimed to study physical and chemical soil properties on
the rubber plant with such vegetation Mucuna bracteata, Nephrolepis biserrata,
grass, and without vegetation in Gunung Para PTP.Nusantara III. The observed
parameters are soil texture, porosity, water content of field capacity, soil
permeability, total nitrogen, avalaible soil phosphate , and land pottasium exchange.
The results showed that the soil type was ultisol with sandy clay loam texture and
pH ranged from 6.33 to 6.47 (slightly sour). The soil vegetations porosity was 50.43 to
52.24% at 5 cm depth and 48.53 to 48.93% at 25 cm depth, the water content of field
capacity was ranged from 40.97 to 44.77%, permeability was ranged from 4.7 to 6.5
cm/h at 5 cm depth and 2.82 to 4.84 cm/h at 25 cm depth, total N was ranged from 0.10 to
0.11%, available P was ranged from 5.6 to 9.98 ppm, K exchange of land was ranged
from 0.44 to 0.52 me/100g. The soil without vegetation porosity was 48.73% at 5 cm
depth and 46.83 at 25 cm depth, the water content of field capacity was 34.14%,
permeability was 2.88 at 5 cm depth and 2.55 at 25 cm depth, total N was 0.009%,
avalaible P was 5.5 ppm, K exchange of land was 0.33 me/100g. | en_US |
