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All Journal Journal of Tropical Soils Jurnal Teras Fisika : Teori, Modeling, dan Aplikasi Fisika
Firdaus, Fazri
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Agriculture, Biological Sciences & Forestry Environmental Science Materials Science & Nanotechnology

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Analisis gugus fungsi nanopartikel magnetite Fe3O4 yang disintesis hijau menggunakan ekstrak moringa oleifera Firdaus, Fazri; Tabrani, Rizqi A’mal Hibatullah; Saefullah, Asep; Antarnusa, Ganesha
Jurnal Teras Fisika: Teori, Modeling, dan Aplikasi Fisika Vol 7 No 2 (2024): Jurnal Teras Fisika: Teori, Modeling, dan Aplikasi Fisika
Publisher : Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.jtf.2024.7.2.12690

Abstract

A study was conducted to analyze the functional groups in green synthesized (GS) Fe3O4 samples using Moringa Oleifera (MO) and black iron oxide (Fe3O4) nanoparticles using FTIR-Spectroscopy. Functional group analysis of the samples was carried out to ascertain whether there was any difference in the formation of MNPs from the use of MO, molecular bonds were observed using FTIR spectra. The presence of magnetite nanoparticle absorption peaks showed two vibrational bands in the range of wave numbers 596-642 cm-1, which correspond to the stretching vibrations of the M-O (metal-oxide) bond. The absorption around 578 cm-1 corresponds to stretching vibrations on the tetrahedral sites of the metal (Fetetra-O). The formation of GS-Fe3O4 is strongly confirmed by the presence of characteristics similar to conventional Fe3O4 in the range of wave numbers 1391, 1633 and 2318 cm-1, which represent stretching vibrations of C=O, N-H, C=O chemical bonds, and another absorption peak at wave number 3167 cm-1 corresponding to vibrations of O-H (hydroxyl) groups.
Abundance of Soil Arthropods under Reduced Tillage and Bagasse Mulching in a Sugarcane Plantation in Central Lampung, Indonesia Susilo, Fransiscus Xaverius; Swibawa, I Gede; Kaneko, Nobuhiro; Kristina, Anastasia; Sholih, Muhammad Badrus; Saputra, Muhamad Jaya; Firdaus, Fazri; Haryani, Sri; Gunito, Heru; Saefudin, Saefudin
JOURNAL OF TROPICAL SOILS Vol. 23 No. 2: May 2018
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2018.v23i2.99-109

Abstract

This study was aimed to show whether conservation effort through reduced tillage or mulching can promote soil zoological benefits, especially to the soil arthropods in sugarcane plantations area, Central Lampung, Indonesia. Twenty sugarcane plots of 25 m × 25 m size each were prepared in the area and treated with two combined treatments i.e. tillage (no tillage and full tillage) and mulching (without bagasse and with bagasse mulch). Tillage and planting were done in July 2010 while mulching was conducted in August 2010. The arthropods were sampled using pitfall traps (mouth diameter = 13.5 cm), each was set per plot for 24 hours. Specimens were identified at least to order level. Sampling was done in September 2010 (1 month after mulch treatment, MAT), January 2011 (4 MAT), and July 2011 (10 MAT). We found four major arthropod orders, namely Araneae (spiders, predator), Coleoptera (beetles, mostly non predator), Collembola (springtails, fungal feeder), and Hymenoptera (ants, mostly forager). The last two groups were the most dominant (contributing to > 90 % of the total abundance). Tillage affected the abundance of overall soil arthropods at 1 MAT and 4 MAT but the effect disappeared at 10 MAT. Reduced tillage can conserve, or does not harm, some soil arthropod groups (ants, predatory ants, beetles, springtails, spiders) in sugarcane agroecosystem.
Co-Authors Asep Saefullah Ganesa Antarnusa Gunito, Heru I GEDE SWIBAWA, I GEDE Kaneko, Nobuhiro Kristina, Anastasia Saefudin Saefudin Saputra, Muhamad Jaya Sholih, Muhammad Badrus Sri Haryani Susilo, Fransiscus Xaverius Tabrani, Rizqi A’mal Hibatullah