Kajian Sifat Fisika dan Kimia Tanah Inceptisol Pada Lahan Karet Telah Menghasilkan dengan Beberapa Jenis Vegetasi yang Tumbuh di Kebun PTPN III Sarang Giting

Abstract

SRI APULINA : The Study of Physical And Chemical Properties of Soil Inceptisol The Rubber Land has Resulted In Some Type of Vegetation that Grows In PTPN III Sarang Giting, supervised by SUMONO and AINUN ROHANAH Physical and chemical soil characteritics are important factors for the growth of rubber plant. This research was aimed to study physical and chemical soil characteritics of the rubber plant with vegetations of harupat spikes, grass, taro 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 4,62-4,97 (acid). The vegetation soil had porosity of 51,75-52,73 % at a depth of 5 cm and 51,35-53,30 % at a depth of 25 cm. The water content of field capacity was ranged from 40,9-44,3 % at a depth of 5 cm and 32,9-35,3 % at a depth of 25 cm. Permeability was ranged from 3,57-5,89 cm/h. Total N was 0,06-0,09 %. P available was ranged from 9,77-15,37 ppm. K exchange of land was ranged from 0,66-0,85 me/100g. The soil with no vegetation had porosity of 51,34 % at a depth of 5 cm and 50,95 % at a depth of 25 cm. The water content of field capacity was 35,1 % at a depth of 5 cm and 29 % at a depth of 25 cm. Permeability was 2,62 cm/h. Total N was 0,06 %. P available was 14,99 ppm. K exchange of land was 0,83 me/100g.