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All Journal Agroradix : Jurnal Ilmu Pertanian Takuana: Jurnal Pendidikan, Sains, dan Humaniora
John Bimasri
Program Pascasarjana Universitas Musi Rawas
Agriculture, Biological Sciences & Forestry Arts Humanities Education Social Sciences

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KARAKTERISTIK SIFAT FISIK TANAH ULTISOL BERDASARKAN TINGKAT KEMIRINGAN LERENG Eko Dedi Septiaji; John Bimasri; Zaini Amin
AGRORADIX : Jurnal Ilmu Pertanian Vol 7 No 2 (2024): Juli 2024
Publisher : Agroteknologi Fakultas Pertanian Universitas Islam Darul 'Ulum (UNISDA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52166/agroteknologi.v7i2.6462

Abstract

Ultisol soil has slow permeability and low aggregate stability, so it has low water holding capacity and is sensitive to erosion. The research was carried out from January to February 2024, in the Kebon Kito Agrotourism area at coordinates 3O19'20.52"S and 102O 55'25.92"E, which is in South Lubuklinggau I District, Lubuklinggau City, South Sumatra Province at an altitude of 105 meters above sea level using survey methods. The parameters observed in this research were bulk density, water content, pore space and soil pH at each slope, namely 25%, 30% and 35%. Data from field and laboratory research are processed using mathematical methods using formulas. The research results show that land with a small slope has a low bulk density (0.84 g/cm3), and has high water content, pore space and pH of 66%, 28.32% and 6.7 respectively. compared to land that has a greater slope. The conclusion of this research is that the steeper the slope on a land surface will cause an increase in unit weight and reduce the water content, pore space and acidity (pH) of the soil.
Kajian Lingkungan terhadap Kerusakan Tanah Akibat Limbah Semen dari Perbedaan Sistem Pengadukan Mustofa Mustofa; John Bimasri; Wartono Wartono
Takuana: Jurnal Pendidikan, Sains, dan Humaniora Vol. 5 No. 2 (2026): Takuana (July-September)
Publisher : MAN 4 Kota Pekanbaru

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56113/takuana.v5i2.680

Abstract

The rapid expansion of infrastructure development has increased concrete consumption, resulting in cement mortar waste that may contaminate soil and degrade its physical properties. This study analyzed the effects of cement waste from different concrete mixing systems on soil physical characteristics and identified the most environmentally sustainable mixing method. An experimental comparative study was conducted in F Trikoyo Village, Musi Rawas Regency, Indonesia, from May to June 2026. Four mixing systems were evaluated: direct mixing on the ground, mixing on a wooden platform, using a mini concrete mixer, and using a large concrete mixer. Soil bulk density, porosity, infiltration, permeability, and aggregate stability were analyzed through field observations and laboratory testing. Direct ground mixing generated the highest cement waste (9.55%), increasing bulk density by 33.90% while reducing porosity, infiltration, permeability, and aggregate stability by 26.63%, 62.93%, 77.90%, and 37.85%, respectively. In contrast, the large concrete mixer produced the least waste (1.18%) and caused minimal soil degradation. Therefore, large concrete mixers are recommended to reduce soil contamination and support sustainable construction practices.
Co-Authors Eko Dedi Septiaji Mustofa Mustofa Wartono Wartono Zaini Amin