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All Journal Journal of Tropical Soils Agroekotek View JOURNAL OF WETLANDS ENVIRONMENTAL MANAGEMENT Acta Solum
Muhammad Mahbub
Program Studi Ilmu Tanah, Fakultas Pertanian, Universitas Lambung Mangkurat
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Earth & Planetary Sciences Engineering Environmental Science

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Pengaruh Pemberian Biourin Sapi terhadap Pertumbuhan dan Produksi Tanaman Kangkung Darat (Ipomoea reptans Poir) pada Tanah Ultisol Maya Pahlawati; Muhammad Mahbub; Muhammad Syarbini
Acta Solum Vol 1 No 1 (2022): November 2022
Publisher : Department of Soil, Faculty of Agriculture, Lambung Mangkurat University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/actasolum.v1i1.1383

Abstract

Ultisols have the potential to be developed as productive agricultural land, but need several efforts by means of organic matter and fertilizer applications. Biourine is a fermented liquid waste from cow urine. One of the commodities developed in Ultisol is spinach (Ipomoea reptans Poir). The study aims to determine the effect of treatments of six biourin concentrations on available nitrogen, soil pH, and growth plants of spinach on Ultisol soil. The single factor of completely randomized design (CRD) used as an experimental design consists of six treatments with four replications (24 experimental units). The results showed that biourine had no effect on increasing soil ammonium-N and had no effect on soil nitrate-N and soil pH. Biourin affects the increase in wet weight and dry weight of spinach plants. There is a relationship between soil NO3- and NH4+ levels with wet weight. Biourin concentration level of 2% is the best concentration to increase ammonium-N, wet weight and dry weight.
Fluktuasi Genangan Air dan Pemberian Campuran Kapur dan Kompos Jerami Padi: Pengaruhnya terhadap pH dan Fe Larut pada Tanah Sulfat Masam Fajar Prayoga; Muhammad Mahbub; Afiah Hayati
Acta Solum Vol 2 No 1 (2023): November 2023
Publisher : Department of Soil, Faculty of Agriculture, Lambung Mangkurat University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/actasolum.v2i1.2274

Abstract

Swamps in Indonesia are widely spread over four major islands, namely in Sumatra, Kalimantan, Papua, and Sulawesi Papua. The problem with acid-sulfate soils is when the pyrite layer is oxidized. This study used a two-factorial with completly randomized design (CRD). The first factor was flooding fluctuation an the second factor was lime with straw compost. The soil parameters tested were pH and soluble Fe. Observations in the second week of the treatment of fluctuations in puddles that were drained, then flooded and added with a mixture of 3 t ha-1 lime, and 2.5 t ha-1 of straw compos resulted in the highest pH of 6.21. The best soil pH was given lime at 3 t ha-1, both flooded and drained. Observations in the fourth week produced the highest pH, namely 4.80. The pH value of the slightly acidic soil was due to an oxidation-reduction process. The 2nd week of observation had the highest soluble Fe value of 221 mg kg1, which was due to the analysis of soluble Fe using a pH of 4.8 so that Fe2+ increased in dissolved Fe. The fourth week of observation had the lowest soluble Fe value of 56.34 mg kg-1. This was due to flooding and the application of a mixture of lime and rice straw compost. The results of the study show that the interaction of fluctuations in water, lime, and rice straw compost that can affect soil pH and the solubility of soil soluble iron (Fe2+).
Pengaruh Ukuran Butiran Kapur Pertanian yang Diberikan Berdasarkan Sulfat Larut terhadap Peningkatan pH Tanah Sulfat Masam Ramzy Nurul Afiat; Muhammad Mahbub; Zuraida Titin Mariana
Acta Solum Vol 1 No 3 (2023): Juli 2023
Publisher : Department of Soil, Faculty of Agriculture, Lambung Mangkurat University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/actasolum.v1i3.2281

Abstract

Acid sulfate soils contain pyrite and when pyrite is oxidized it causes the soil pH to decrease. Application of agricultural lime CaCO3 is needed to raise soil pH. The grain size of lime greatly affects the fast, slow, and persistent increase in soil pH. This research method used a completely randomized design (CRD) with a single factor, namely the grain size of agricultural lime (18-35 mesh, 18-70 mesh, <18 mesh, 35-70 mesh, <35 mesh, <70 mesh). The treatment was repeated 4 times. The dose of lime given is based on the value of the bulk density of the soil and the sulfur of the soil solution. Observation of soil pH was carried out after an incubation period of 4 weeks using glass electrodes with various ratios of soil and water (1:2.5; 1:5; 1:7.5; 1:10). The results showed that the grain size of lime affects the increase in pH of acid sulfate soil in the soil-water ratio measurement method of 1:5 and 1:10, except for the measurement method 1:2.5 and 1:7.5. The smaller the lime size, the greater the increase in pH of acid sulfate soil. The largest increase in soil pH in the soil-water ratio measurement method was 1:10, for each grain size from the largest to the smallest: 18 - 35 mesh, 18 - 70 mesh, <18 mesh, 35 - 70 mesh, <35 mesh and <70 mesh, resulting in soil pH successively: pH 4.52; pH 4.58; pH 4.53; pH 4.60 ; pH 4.63 and pH 4.70.
Sebaran Tingkat Kemasaman Tanah dan Potensial Redoks serta Kedalaman Pirit (FeS2) pada Lahan Sulfat Masam di Kecamatan Alalak Fandi Khairany Ahmad; Muhammad Mahbub; Abdul Hadi
Acta Solum Vol 2 No 2 (2024): Maret 2024
Publisher : Department of Soil, Faculty of Agriculture, Lambung Mangkurat University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/actasolum.v2i2.2437

Abstract

Acid sulfate soil has a layer of pyrite, when it is oxidized, can acidify the soil. The presence of pyrite in acid sulfate soils is very diverse and must be known. Not knowing the depth of pyrite can have fatal consequences, because layers of pyrite can be lifted to the surface due to tillage so that it oxidizes. This study aims to determine and map the distribution of pyrite depth, soil pH, and redox potential. Soil samples were determined with an exploratory descriptive method through land surveys and supported by laboratory analysis of pH, Eh and FeS2. The results showed that acidity of acid sulphate soil at all sample points was classified as very acid, Eh was classified as low reduction till oxidation. Based on the results of observations of pyrite depth, 3,492.15 ha (78.1%) was actual acid sulfate soil and 979.13 ha (21.9) was potential acid sulfate soil. So proper management is needed when turning over the soil so that the pyrite is not exposed, applying lime, organic material and regulating the water level so that the groundwater level is not below the depth of the pyrite
Analisis Kandungan Hara N, P, dan K pada Perbedaan Lahan yang Ditanami Karet dan Kelapa Sawit Nur Hidayanti; Muhammad Mahbub; Abdul Haris
Acta Solum Vol 2 No 2 (2024): Maret 2024
Publisher : Department of Soil, Faculty of Agriculture, Lambung Mangkurat University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/actasolum.v2i2.2445

Abstract

The general obstacles in cultivating rubber and oil palm are soil acidity and limited availability of nutrients, especially N, P, and K. These nutrients play an important role in the growth of rubber and oil palm plants. Knowing the nutrient content is necessary to be able to determine the management that needs to be carried out. The objective of this study is to determine differences in the nutrient content of N, P, and K on various lands planted with rubber and oil palm plants. Soil sample analysis was conducted in the laboratory for available N, available P, and available K. To determine differences in land use for the elements N, P and K, data were analyzed using an unpaired two sample t test. The results showed differences in available K and available P levels between the two land types, while no differences were observed in N availability between the two land types. This variation may be caused by differences in land management practices.
Analisis Perbandingan Agregat Mantap Air pada Lereng Curam Tanpa Teknik Konservasi Mekanik Norhana Norhana; Muhammad Mahbub; Abdul Haris
Acta Solum Vol 3 No 1 (2024): November 2024
Publisher : Department of Soil, Faculty of Agriculture, Lambung Mangkurat University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/actasolum.v3i1.2832

Abstract

The slope is one of the important elements in topography that affects various natural processes and human activities. Slope position can lead to reduced soil fertility due to runoff. This research aims to analyze the comparison of water-stable aggregate on different slope positions which are divided into three, namely between upper slope, middle slope and lower slope. The research method used is descriptive comparative, which is carried out by deliberate sampling on sloping land planted with rubber plants with a depth of 0-20 cm and the same slope of 25-45% and then analyzed in the soil laboratory. Data were analyzed by t-test to determine the comparison of water-stable aggregate different slope positions. The results showed that water-stable aggregate values at different slope positions had significant differences. Water-stable aggregate values in the upper slope tend to be smaller than those in the middle slope and lower slope which are much larger. Slope position, organic-C content, and clay fraction affect water-stable aggregate values
Co-Authors Abdul Hadi Abdul Haris Afiah Hayati Akhmad Fauzi Ekka Rindha Setyanie Fajar Prayoga Fandi Khairany Ahmad Mariana Mariana Maya Pahlawati Muhammad Suriani Muhammad Syarbini Norhana Norhana Nur Hidayanti Ramzy Nurul Afiat Rodinah Rodinah syaifuddin syaifuddin Zuraida Titin Mariana