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All Journal Jurnal Biologi Tropis Journal of Soil Quality and Management
Padusung
Universitas Mataram
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Environmental Science Immunology & microbiology

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Study of Soil Erodibility in Various Agroforestry Systems Based on Elephant Foot Yam (Amorphophallus oncophyllus) in Bayan District, North Lombok Regency Rudy Fermana; I Gusti Made Kusnarta; Padusung
Jurnal Biologi Tropis Vol. 23 No. 1 (2023): January - March
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v23i1.4435

Abstract

Bayan District has a wavy to mountainous topography. The type of soil in the area is classified as Inceptisol, so it is very susceptible to erosion. An agroforestry system, with various stands of perennial crops, has been developed in the area, as a conservative measure to support the sustainability of land resources. This study aims to assess the value of soil erodibility in Elephant foot yam-based agroforestry systems in five types of stands, namely: Teak (A1), Cashew (A2), “Gamal” and Banana (A3), Cocoa (A4), and Coffee (A5). The method used is descriptive method with survey technique. Determination of the research location was carried out by purposive sampling with the criteria of land having a rather steep slope (15-17%), the soil order Inceptisol, located in the upper slope, and a high level of stand vegetation homogeneity.  Soil samples (undisturbed and disturbed) were collected using the diagonal method on 10 x 10 m plots randomly placed in each agroforestry system with a depth of 0-20 cm. Parameters observed were soil texture (pipette method), soil permeability (constant head), soil structure (qualitative in the field), and soil organic matter (Walkley and Black). The result showed that the value of soil erodibility, in agroforestry systems with different stands, was significantly difference, with the lowest value was found in the Coffee agroforestry system (A5) of 0,416 and the highest was found in the Cashew system (A2) of 0,661. The effectiveness of improvement soil erodibility in the agroforestry system of A5 was 37% better than A2.
STATUS Pb (Plumbum) DAN Hg (Hydrargyrum) PADA TANAH SAWAH YANG AIR IRIGASINYA BERASAL DARI PENYATUAN AIR LINDI (Leachate) TPA REGIONAL KEBON KONGOK LOMBOK BARAT alfin noor iswandi; Padusung; I Nym Soemeinaboedhy
Journal of Soil Quality and Management Vol. 2 No. 2 (2023): Jurnal Soil Quality and Management
Publisher : Department of Soil Science, Faculty of Agriculture, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jsqm.v2i2.155

Abstract

Pencemaran logam berat (Pb) di kolam limbah air lindi TPA Kebon Kongok Desa Suka Makmur Kecamatan Gerung Kabupaten Lombok Barat berada dibawah baku mutu nasional Indonesia yaitu, 0,03 ppm, standar baku mutu nasional untuk Plumbum (Pb) 1 mg/L. sedangkan untuk pencemaran Hydrargyrum (Hg) di kolam lindi TPA Kebon Kongok belum diketahui (Permen LHK No. 6 Tahun 2021). Metode yang digunakan pada penelitian ini adalah metode deskriptif. Penelitian ini dilaksanakan di lahan sawah Dusun Bongor, Desa Kebon Ayu, Kecamatan Gerung, Kabupaten Lombok Barat yang sumber airnya berasal dari penyatuan air lindi TPA Kebon Kongok dengan sungai Babak Dusun Bongor, pada bulan September - Oktober 2022. Pengambilan sampel tanah dilakukan secara komposit kemudian dianalisis di Laboratorium Dinas Lingkungan Hidup Provinsi Nusa Tenggara Barat. Hasil penelitian ini menunjukkan bahwa kandungan Pb tanah sawah Desa Kebon Ayu dan Desa Suka Makmur pada perlakuan kontrol, Hulu, Tengah, dan Hilir berada di bawah baku mutu (Peraturan Pemerintah RI No. 22 Tahun 2021 Tentang Penyelenggaraan Perlindungan Dan Pengelolaan Lingkungan Hidup). Kontrol 0,21 ppm; Hulu 0,21 ppm; Tengah 0,22 ppm; Hilir 0,2 ppm. Hasil analisis untuk Hydrargyrum (Hg) pada tanah sawah Desa Kebon Ayu dan Desa Suka Makmur tidak terdeteksi pada batas alat deteksi AAS <0,0001 ppm.
Co-Authors alfin noor iswandi I Gusti Made Kusnarta I Nym Soemeinaboedhy Rudy Fermana