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Journal : Journal Arunasita

Karbon Organik Tanah Pada Beberapa Penggunaan Lahan Di Kelurahan Limau Manis Kota Padang Anika, Elsi; Rasyidin, Azwar; Junaidi, Junaidi
Journal Arunasita Vol. 1 No. 1 (2024): Pangan dan Tantangan dalam Era Digital
Publisher : WBS Laboratory

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.15315264

Abstract

Karbon adalah unsur paling penting dalam ekosistem, karena hampir semua bentuk kehidupan di Bumi bergantung karbon. Ketersediaan karbon organik tanah dipengaruhi oleh pengelolaan lahan, termasuk pengolahan intensif, perubahan hutan menjadi pertanian, dan praktik yang tidak mengembalikan sisa panen.Tujuan dari penelitian ini adalah untuk mengetahui jumlah kandungan karbon organik tanah pada beberapa penggunaan lahan yang ada di Kelurahan Limau Manis, Kecamatan Pauh Kota Padang. Metode yang digunakan adalah metode survei dengan teknik purposive random sampling. Sampel tanah di ambil berdasarkan horizon tanah. Parameter yang dianalisis yaitu Tekstur Tanah, C-Organik, Berat Volume, Total Ruang Pori, Respirasi Tanah, C-Biomassa, Konsentrasi karbon organik tanah ditentukan dengan metode Walkley dan Black. Kandungan karbon organik tanah di hitung dari % C-organik, berat volume tanah dan kedalaman tanah. Hasil Penelitian ini menunjukan jumlah kandungan karbon jumlah kandungan karbon organik pada penggunaan lahan hutan,sawit,tegalan dan sawah lapisan top soil atau horizon A dengan kedalaman 0-20 cm, masing–masing yaitu 6,63 kg/m², 3,73 kg/m², 3,68 kg/m² dan 2,41 kg/m². Sedangkan pada penggunaan lahan hutan,sawit,tegalan dan sawah lapisan sub soil atau horizon B dengan kedalaman 20-40 cm, masing–masing yaitu 4,79 kg/m², 2,21 kg/m², 2,81 kg/m² dan 2,29 kg/m2. Jumlah kandungan karbon tertinggi terdapat pada lahan hutan dimana penyerapan CO2 di tumbuhan selain itu juga dikarenakan banyak serasah dari lahan hutan dijadikan bahan untuk penambahan bahan organik pada tanah.
Study Of Chemical Properties Of Soil On Gambir (Uncarıa Gambir Roxb) Land Based On Slope İn Nagari Siguntur, Koto XI Tarusan district, Pesisir Selatan regency, Indonesia Kenti, Helda; Rasyidin, Azwar; Gusnidar, Gusnidar
Journal Arunasita Vol. 2 No. 1 (2025): Soil Health and Soil Management
Publisher : WBS Laboratory

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.15315389

Abstract

Gambier plants (Uncaria gambir.Roxb) are the main plantation commodity in West Sumatra. However, cultivating gambier on steep slopes can cause changes in soil chemical properties. This research aims to examine the chemical properties of soil on gambier land based on slope class in Nagari Siguntur. This research was carried out from June to December 2022. The method used was a survey method with the Purposive Random Sampling technique. Soil samples taken were soil samples on 3 slopes and forest as a control (45%) at a depth of 0-30 cm with 3 replications. The analysis results show the soil pH value is between 3.98–4.47 with very acid criteria. Soil C-Organic content is between 0.86%-1.76% with very low to low criteria. The N-Total content is between 0.26%-0.32% with medium criteria. The P-Available content is between 2.15 ppm-13.54 ppm with very low to low criteria. CEC with a value of 14.39-17.02 cmol/kg with low to moderate criteria. And the exchangeable cations in gambier land are classified as very low criteria.
Kajian Sifat Kimia Inceptisol Pada Beberapa Kelas Lereng Di Nagari Aie Dingin Kecamatan Lembah Gumanti Kabupaten Solok Andini, Liza; Prasetyo, Teguh Budi; Rasyidin, Azwar
Journal Arunasita Vol. 2 No. 2 (2025): Soil and Food
Publisher : WBS Laboratory

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.15315593

Abstract

A study on chemical properties of Inceptisols in four slope classes in scrubland areas was conducted in Nagari Aie Dingin, Lembeh Gumanti Sub-District, Solok Regency, from May 2022 to February 2023. This research was aimed to assess the chemical properties of Inceptisols in several slope classes in Nagari Aie Dingin, Lembah Gumanti Sub-District, Solok Regency. The study was carried out using a survey method. Samples were purposively taken from four slope classes (8-15%, 15-25%, 25-45%, >45%) and one comparison land (25-45%) at depths of 0-20 cm and 20-40 cm with three replications. The parameters analyzed were soil pH, organic C, total N, C/N ratio, available P, and CEC. The research results indicated that the soil pH ranged from 4.61 units to 5.62 units (acidic to slightly acidic). The organic carbon content of the soil ranged from 1.51% to 2.55% (low to moderate). The total nitrogen content ranged from 0.05% to 0.19% (very low to low). The C/N ratio ranged from 9.37 to 35.8 (low to very high). The P-available content ranged from 2.29 ppm to 43.6 ppm (very low to very high). Cation exchange capacity (CEC) had values from 14.28 me/100g to 43.62 me/100g (low to very high). The result showed that in the research area there was a decrease in the value of soil chemical properties along with increasing slope class.