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All Journal Jurnal Penelitian Kelapa Sawit International Journal of Engineering, Science and Information Technology
Sigit Sutarta, Edy
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Karakteristik Kimia Tanah Sulfat Masam Pada Kedalaman Lapisan Sulfurik Yang Berbeda Serta Pengaruhnya Terhadap Perkembangan Akar Tanaman Kelapa Sawit Noviandi Ginting, Eko; Sigit Sutarta, Edy
Jurnal Penelitian Kelapa Sawit Vol 32 No 1 (2024): Jurnal Penelitian Kelapa Sawit
Publisher : Pusat Penelitian Kelapa Sawit

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22302/iopri.jur.jpks.v32i1.250

Abstract

Salah satu faktor pembatas pemanfaatan tanah sulfat masam untuk usaha budidaya tanaman kelapa sawit adalah keberadaan lapisan sulfurik yang berpotensi teroksidasi. Teroksidasinya lapisan sulfurik tersebut dapat menyebabkan pH tanah menjadi sangat masam dan melepaskan sejumlah unsur logam beracun yang dapat menghambar perkembangan akar tanaman. Penelitian ini bertujuan untuk mengkaji karakteristik kimia tanah pada blok tanaman kelapa sawit dengan beberapa kedalaman sulfurik dan pengaruhnya terhadap perkembangan akar kelapa sawit secara vertikal. Penelitian dilakukan di salah satu perkebunan kelapa sawit yang diusahakan pada lahan pasang surut di Kabupaten Aceh Tamiang, Propinsi Nanggroe Aceh Darussalam. Objek kajian penelitian ini adalah tiga blok tanaman yaitu Blok 27, blok 41, dan blok 42 masing-masing dengan kedalaman lapisan sulfurik 40-60 cm; 60-90 cm; dan > 90 cm. Hasil penelitian menunjukkan bahwa tingkat kemasaman, kandungan Al-dd dan Fe tanah pada blok 27 relatif lebih tinggi dibanding blok lainnya. Terdapat hubungan antara pH tanah dengan Al-ddd dan kandungan Fe tanah. Dimana semakin rendah pH maka semakin tinggi kandungan Al-dd dan Fe tanah. Perkembangan total akar kelapa sawit terbaik diperoleh pada blok 41 yaitu sebesar 188,26 g/dm3 dan yang terendah pada blok 27 sebesar 75,99 g/dm3. Hasil penelitian mengindikasikan bahwa semakin dangkal lapisan sulfurik dari permukaan tanah maka semakin terhambat perkembangan akar kelapa sawit. Perakaran kelapa sawit relatif berkembang baik jika kedalaman lapisan sulfurik > 90 cm.
Effectiveness of Organic Materials as Media in Sulfate Reducing Bacteria Inoculum to Changes on Acid Sulfate Soils Mazlina, Mazlina; S Hanafiah, Asmarlaili; Rauf, A; Sigit Sutarta, Edy
International Journal of Engineering, Science and Information Technology Vol 2, No 1 (2022)
Publisher : Malikussaleh University, Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (235.712 KB) | DOI: 10.52088/ijesty.v2i1.202

Abstract

Acid sulphate soils (ASS) had low pH, low nutrients availability and also soluble aluminium and iron were high. Inoculum of sulphate reducing bacteria (SRB) which organic matter as media could increased the soil pH, nutrient content and decrease sulfur-total of acid sulfate soils. The research was conducted in a randomized block design with two replications. This study used a randomized block design with two factors and two replications. The first factor was compost inoculum (C) was taken ten treatments from without any  inoculum SRB and 9 treatment with different types and dosages of organic matter as media. The second factor was the water content condition (K) namely of K1: 100% field capacity and K2: 110% field capacity. Different types and dosages of organic matter appear to influence the changes in soil properties (tends to decrease soil sulfate and increase soil pH, and nutrient content levels in soil and plant). Inoculum SRB of palm oil empty bunches and weed gave a higher sulfate reduction compared to C0 (without inoculums) or inoculums with carrier media that used rice straw in water content 100% or 110% field capacity (FC).
Co-Authors Mazlina, Mazlina Noviandi Ginting, Eko Rauf, A S Hanafiah, Asmarlaili