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All Journal Jurnal Penelitian Pendidikan IPA (JPPIPA) Journal of Biology, Environment, and Edu-Tourism
Zaenal Arifin
University of Mataram
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Energy Environmental Science Immunology & microbiology Library & Information Science Materials Science & Nanotechnology Medicine & Pharmacology Physics Public Health Social Sciences Other

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The Effectiveness of Bio Activator of Phosphate Solubilizing Bacteria Consortium on Composting Bag-log Waste Incorporated with Cow Dung Lolita Endang Susilowati; Mahrup Mahrup; Zaenal Arifin; R. Sutriono
Jurnal Penelitian Pendidikan IPA Vol 9 No 2 (2023): February
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i2.2755

Abstract

Bag-log waste is an organic material that is difficult to decompose. This is due to the bag log's high content of lignin compounds. Therefore, to speed up the composting process, it is necessary to include other organic materials and bio activators. This study aims to analyze the effectiveness of the bio-activator consortium of Phosphate Dissolving Bacteria (KBPF) in composting bag-log waste mixed with cow dung. The experiment consisted of 5 treatments with three replications, namely (T1) bag-log waste, (T2) a mixture of bag-log waste and cow manure with a composition of 1:2 (wt/wt), (T3) a mixture of bag-log waste and cow manure with 2:1 ( wt/wt), (T4) a mixture of bag-log waste and cow manure with a composition of 1:2 (wt/wt) plus KBPF (200 ml) with a density of 108 CFU/ml (T5) a mixture of bag-log waste and cow manure with a composition of 2:1 (wt/wt) plus KBPF (200 ml) with a density of 108 CFU/ml. The experiment was created as - Completely Randomized Design (CRD). The experimental results show that bag-log waste cannot be decomposed fastly without cow dung and bio activators. The treatments of T2, T3, T4 and T5 produced compost with quality not significantly different from one another. Under these treatments, the temperature was controlled in the mesophilic stage, and the composting pH was returned to neutral, while the moisture content and C/N ratio decreased to almost half of their original levels at the end of the composting period. It seems that inoculation of KBPF into the mixture of cow dung and bag-log waste has no role in accelerating the composting process. The mix of Bag-log and cow dung, with a minimal proportion of 2:1 without inoculation KBPF, was the recommended combination in composting bag-log in which the final product (compost) could fulfil its pH (neutral), the threshold of temperature and water content.  The C/N ratio of the treatment was close C/N ratio of mature compost, and total N and total P contents were more than the standard of SNI 19-7030-2004.
Analysis of Soil Carbon Content Variation in Four Different Land Use Types in West Lombok Baiq Dewi Alya Nilyana Putri; Lalu Arifin Aria Bakti; Zaenal Arifin; Muhammad Zaki
Journal of Biology, Environment, and Edu-Tourism Vol. 1 No. 2 (2025): August
Publisher : Yayasan Siti Widhatul Faeha

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Soil plays a vital role as a natural sink for atmospheric carbon emissions, contributing to climate change mitigation. This study aimed to analyze soil carbon content across four different land use types-conservation forest, mangrove forest, mixed garden, and paddy field-in West Lombok District, and to assess its relationship with soil physical properties. A descriptive survey method was employed, with soil sampling conducted at depths of 0–10 cm and 10–20 cm across 24 plots. Data were analyzed using ANOVA and correlation tests. The results revealed significant variation in soil carbon content among land use types, with conservation forest exhibiting the highest value (4,010 tons/ha), followed by paddy field (3,894 tons/ha), mixed garden (2,694 tons/ha), and mangrove forest (1,184 tons/ha). Soil bulk density (BV) showed a strong positive correlation with carbon content, while porosity was negatively correlated. These findings suggest that land use and soil structure significantly influence soil carbon storage. Conservation forests, with higher organic input and minimal disturbance, are the most effective in sequestering carbon. This study highlights the importance of sustainable land use planning in enhancing soil carbon sequestration as a climate mitigation strategy.
The Population and Isolates of Potential ACC Deaminase-Producing Rhizobacteria from Rhizospheric Soil of Peanut under Different Moisture Level Dori Kusuma Jaya; Lolita Endang Susilowati; Zaenal Arifin; Age Iwandaka; Eli Martini
Jurnal Penelitian Pendidikan IPA Vol 10 No 11 (2024): November
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v10i11.7818

Abstract

ACC deaminase-producing rhizobacteria play an important role in enhancing plant growth and health, particularly under environmental stress condition. This study focused on isolating and determining the population of potential ACC deaminase-producing rhizobacteria from the rhizosphere of peanut plants (Arachis hypogea L.) grown under varying moisture level. Bacterial population was measured using the Standard Plate Count (SPC) method on Dworkin-Foster (DF) medium supplemented with 3 mM.L-1 ACC as the sole nitrogen source. The isolated bacteria were screened based on their ability to grow after 24 hours of incubation on the selective medium. Result showed that bacterial colonies on nutrient agar (NA) medium varied in color, while colonies on the selective medium were uniformly white. The total population of ACC deaminase-producing rhizobacteria generally declined as soil moisture decreased, nevertheless, the sample at 80% available water contained fewer bacteria (7.3 x 103 cfu.g-1 soil) than those (9.7 x 105 cfu.g-1) at 50%. In an additional experiment, 9 out of 11 selected isolates were found to potentially produce ACC deaminase, with 5 of these being diazotrophic bacteria. This study contributes valuable information for designing irrigation systems in sustainable land management, particularly concerning plant-beneficial microbes that produce ACC deaminase and help plants tolerate environmental stressors.
Co-Authors Age Iwandaka Baiq Dewi Alya Nilyana Putri Dori Kusuma Jaya Eli Martini Lalu Arifin Aria Bakti Lolita Endang Susilowati Mahrup Mahrup Muhammad Zaki R. Sutriono