Kajian Sifat Fisika dan Kimia Tanah Pada Lahan Kelapa Sawit dengan Beberapa Jenis Vegetasi Yang Tumbuh di Kebun Ptp. Nusantara III Tanah Raja

Abstract

LENI: Study of physical and chemical soil characteritics in oil palm plantation with several vegetations that grow in Tanah Raja PTP Nusantara III. Supervised by SUMONO and NAZIF ICHWAN Physical and chemical soil characteritic is an important factor for the growth of oil palm. This research is aimed to study physical and chemical soil characteritics on the oil palm with vegetation such Mucuna bracteata, Nephrolepis biserrata, grass and without vegetation in Tanah Raja PTP Nusantara III. The observed parameters are soil texture, porosity, water content of field capasity, soil permeability, total Nitrogen, available soil Phosphate, and land Potassium exchange. The results showed that the soil type was ultisol with sandy clay loam texture and pH ranged from 4.95 to 5.29 (sour). The soil vegetation’s porosity was 50.44 to 52.21% at 5 cm depth and 46.86 to 46.96% at 25 cm depth. The water content of field capacity was ranged from 32.12 to 38.98%. Permeability was ranged from 4.57 to 6.01 cm/h at 5 cm depth and 2.21 to 3.69 cm/h at 25 cm depth. N total was ranged from 0.11 to 0.12%. P available was ranged from 12.87 to 18.96 ppm. K exchange of land was ranged from 0.56 to 0.61 me/100g. The soil without vegetation’s porosity was 46.91% at 5 cm depth and 45% at 25 cm depth. The water content of field capacity was 31.54%. Permeability was 2.86 cm/h at 5 cm depth and 1.84 cm/h at 25 cm depth. Total N was 0.09%. P available was 10.75 ppm. K exchange of land was 0.55 me/100g