Pengaruh Ameliorasi Terak Baja Dan Pengaturan Tinggi Muka Air Tanah Terhadap Sifat Biologi Gambut Perkebunan Kelapa Sawit

ABSTRAK
Penelitian ini dilaksanakan di lahan gambut Perkebunan Kelapa Sawit
PTPN IV Kebun Panai Jaya Provinsi Sumatera Utara dan bekerjasama dengan
Pusat Penellitian Kelapa Sawit (PPKS). Adapun tujuan penelitian ini melakukan
pengelolaan lahan gambut yang lestari dengan cara memanfaatkan limbah baja
sebagai pupuk (amelioran) dan pengaturan tinggi muka air tanah. Pemberian
amelioran bertujuan untuk meningkatkan kadar unsur hara di dalam tanah,
sedangkan pengelolaan tinggi muka air tanah untuk mencegah terjadinya subsiden
di lahan gambut. Dengan adanya penambahan amelioran dan pengaturan tinggi
muka air tanah, Peneliti ingin mengevaluasi pengaruh sifat biologi tanah antara
lain respirasi tanah, populasi fauna tanah, populasi fungi, populasi bakteri serta
hubungannya dengan sifat fisik dan kimia antara lain (suhu, pH, Kadar Air, C/N).
Adapun metode pengambilan sampel yang digunakan adalah dengan cara
Pit Fall Trap (untuk menjebak fauna permukaan tanah), Burlese Turgen (Untuk
melihat fauna tanah yang aktif di dalam tanah) dan membuat lubang (untuk
mendapatkan cacing). Metode yang mendapatkan fauna terbanyak yaitu dengan
cara Pit Fall Trap. Hasil yang diperoleh dengan penambahan amelioran tidak
mempengaruhi organisme tanah namun kedalaman muka air tanah berpengaruh
nyata terhadap populasi fungi, bakteri dan fauna tanah. Sedangkan korelasi antara
fauna tanah terhadap suhu, kadar air dan respirasi tanah (positif) sedangkan pH
dan C/N (negatif). Korelasi populasi bakteri terhadap kadar air dan respirasi

tanah( positif) sedangkan suhu, pH dan C/N (negatif). Korelasi fungi berkolerasi
terhadap C/N (negatif) sedangkan suhu, kadar air, pH dan respirasi tanah
(positif). Jumlah fauna yang banyak ditemukan adalah semut rangrang pada
peringkat pertama dan cacing tanah di posisi kedua.
Kata Kunci : Fauna Tanah, Gambut, Amelioran dan Tinggi Muka air tanah

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ABSTRACT
This study was conducted in peat Oil Palm Plantation PTPN IV Kebun
Panai Jaya province of North Sumatra and in cooperation with the Oil Palm
Research Center (PPKS). The purpose of this study do sustainable peatland
management by utilizing steel waste as fertilizer (ameliorant) and setting the
ground water level. Giving ameliorant aims to increase levels of nutrients in the
soil, while the management of groundwater levels to prevent subsidence in the
peat. With the addition of ameliorant and settings groundwater levels, researchers
wanted to evaluate the effect of soil biological properties of soil respiration
among other things, the amount of soil fauna, population of fungi, bacteria and its
relationship of physical and chemical properties among others (temperature, pH,
Water content, C / N).

The sampling method used is by Pit Fall Trap (to trap fauna ground level),
Burlese Turgen (To view the soil fauna are active in the soil) and make a hole (to
get the worm). A method that gets the highest fauna is by way of the Pit Fall Trap.
The results obtained with the addition of ameliorant not affect the organism of
peat soil, but the depth of the ground water level significantly affect the amount of
fungi, bacteri and soil fauna. While the correlation between soil fauna to
temperature, moisture and soil respiration (positive) while the pH and C/N
(negative). Correlation of bacterial populations on water content and soil
respiration (positive) while the temperature, pH and C/N (negative). Correlation
of bacterial populations on water content and soil respiration (positive) while the
temperature, pH and C/N (negative). Correlation fungi correlated to the C/N
(negative) while the temperature, moisture content, pH and soil respiration
(positive). The amount of fauna that are found are weaver ants in the first rank
and earthworms in the second position.
Keywords: Fauna Soil, Peat, Ameliorant and Water Management

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