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All Journal Jurnal Ilmu Pertanian Indonesia Jurnal Ilmu Tanah dan Lingkungan (Journal of Soil Science and Environment) Jurnal AGROTEKNOLOGI Journal of Tropical Soils Journal of Degraded and Mining Lands Management Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Widyariset Jurnal Wilayah dan Lingkungan Jurnal Tataloka JURNAL ILMIAH GEOMATIKA MAJALAH ILMIAH GLOBE Informatika Pertanian Jurnal Tanah dan Iklim Widyariset Science and Environmental Journals for Postgraduate International Journal on Food, Agriculture and Natural Resources (IJFANRES) Makara Journal of Science
Untung Sudadi
Departemen Ilmu Tanah Dan Sumberdaya Lahan, Fakultas Pertanian IPB, Institut Pertanian Bogor, Kampus IPB Darmaga, Bogor 16680
Aerospace Engineering Agriculture, Biological Sciences & Forestry Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Neuroscience Physics Social Sciences

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Vegetative Growth Responses to Applications of Compost from Biomass of the Same and Different Crop Species and in Vitro Test of Self-DNA Effects Sari, Retno Purnama; Santosa, Dwi Andreas; Sudadi, Untung
International Journal on Food, Agriculture and Natural Resources Vol 6, No 4 (2025): IJ-FANRES
Publisher : Food, Agriculture and Natural Resources - NETWORKS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46676/ij-fanres.v6i4.572

Abstract

Returning-back unharvested crop biomass into soil which is intended to maintain soil fertility status is now facing a challenge concerning self-DNA negative impacts related to the application of compost prepared from biomass of the same crop species at certain compost maturity stage. This study aimed at to evaluate the application effects of composts prepared from biomass of the same and different food crop species with different composting periods on the vegetative growth of rice, maize, and string beans and of DNA extracts from the applied composts on seed germination of the studied crops. The experiment applied CRD with 10 treatments [control, k (compost materials): rice (P), maize (J), and string beans (K) biomass, and composting periods: 0, 30, and 90 d]. DNA was isolated by the modified CTAB method. The results showed that application of mature compost supported the vegetative growth of the test crops, while kP30 and kJ30 treatments, stands respectively for the application of 30 days-composted rice and maize biomass, showed inhibitory effect to the vegetative growth of the same species (rice or maize compost applied to rice or maize cropping). However, in vitro self-DNA inhibition effect was inconsistent and therefore considered not occurred in this experiment.
Flux of Nutrient Leaching from Ultisol of Pineapple Plantation Ameliorated with FABA and Compost and Its Implications on Fertilizer Management Nahdlia Putri Alayya; Iskandar Iskandar; Untung Sudadi
JOURNAL OF TROPICAL SOILS Vol. 31 No. 1: January 2026
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts..v31i1.9-16

Abstract

Ultisol is a weathered tropical soil order with low fertility status. It is also prone to nutrient leaching processes. Plantation area of PT. Great Giant Pineapple (PT GGP), grown in Ultisol, has been intensively cultivated for decades in rotation with banana and cassava. This study aims to evaluate the effects of FABA+compost amendment on nutrient leaching from the Ultisol in the PT GGP area and its implications for fertilizer management. A nutrient-leaching simulation was conducted using percolation experiments. Soil samples were taken from the 0-20 cm layer from pineapple-cultivated field plots 9 months after treatment application or 1 month before the plant regenerative-phase forcing step. Percolations were performed every 7 days with 170 mL Aquadest at 0.75 kg-1 soil for a 35-day experimental period, equivalent to the monthly average rainfall during the six wet months in the study area. The amelioration significantly reduced soil nutrient leaching, as indicated by tmax, total flux, and flux proportion. The band application of 25 t ha-1 FABA + compost gave the best results. The NO3 and K leaching flux proportions, however, were still high. It is suggested that controlled-release fertilizers be considered to reduce nutrient leaching flux.
Maize Nutrient Translocation on Reclaimed Gold Mining Soil with EFB Compost, Clay, and Lime Deno Okalia; Iskandar; Budi Mulyanto; Untung Sudadi
JOURNAL OF TROPICAL SOILS Vol. 31 No. 2: May 2026 (In Press)
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts..v31i2.%p

Abstract

Artisanal gold mining commonly produces soils with poor fertility, low nutrient retention, and unfavorable chemical properties, which constrain crop establishment and productivity. Soil reclamation in these conditions necessitates not only improved soil quality but also effective nutrient uptake and allocation within the plant. This study aimed to evaluate the effects of oil palm empty fruit bunch (EFB) compost, clay soil, and lime on nitrogen (N), phosphorus (P), and potassium (K) concentrations in different maize organs grown on post-mining soil. Researchers conducted a pot experiment using a factorial randomized complete block design with three factors: 1) EFB compost at 6, 12, and 18 tons per hectare (t ha⁻¹); 2) clay soil at 10 and 20%; and 3) lime at 0.5 and 1 t ha⁻¹. After harvest, maize plants were separated into roots, stems, leaves, and grain, and tissue concentrations of N, P, and K were determined. The data were then analyzed using a statistical test called "ANOVA," followed by a more detailed test called "Tukey's test," which was performed at a significance level of 5%. The results showed clear organ-specific patterns of nutrient accumulation. The highest N concentration was found in the grain (1.95%), the highest P concentration in the roots (0.37%), and the highest K concentration in the leaves (3.07%), all under treatment A3B1C1. In general, the highest compost dose, when combined with clay soil and lime, consistently increased nutrient concentration across different parts of the maize plant. The findings suggest that using EFB compost, clay soil, and lime together can effectively improve nutrient availability, uptake, and partitioning in maize grown on post-mining soil. This strategy has the potential to support the productive reuse of degraded artisanal mining land.
Long-term effects of fire and logging on groundwater table and soil moisture in Acacia plantation peatlands Qalbi, Andria Harfani; Tarigan, Suria Darma; Barus, Baba; Sudadi, Untung
Journal of Degraded and Mining Lands Management Vol. 13 No. 3 (2026)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2026.133.10359

Abstract

Soil moisture and the groundwater tables are important for the sustainable management and maintenance of tropical peatland ecosystems. This study examined the long-term impacts of fires and logging on groundwater tables and soil moisture in peatlands used for Acacia plantations. Four land conditions were compared: natural forest (FRS), unharvested Acacia plantations (UHV), post-harvest areas in 2016 (HV), and post-fire areas in 2015 (BAR). Observations were made during the rainy and dry seasons to determine how peat responded to rainfall. The soil conditions observed included groundwater levels measured by the gravimetric method and dipwells, and other soil properties such as bulk density, soil porosity, and water-filled pore space. The results showed that natural forest and unharvested Acacia sites experienced increased soil moisture content during the wet season and a shallower groundwater table than the burned area, which consistently recorded the lowest values. All sites experienced a dramatic decline in both groundwater table and soil moisture during the dry season. This decline was most severe in post-fire peatlands, where the groundwater table fell by more than 80 cm and soil moisture declined from 389% to 230% in some locations. Statistical tests confirmed that both burning and logging had a significant effect on the physical characteristics of peat and groundwater table (? = 0.05). This study shows that, after many years, burned and harvested peatlands continue to experience hydrological degradation and are unable to maintain stable groundwater tables and soil moisture.
Co-Authors Achmad Azhari Sidik Agus Kurniawan Ahmad Imtaz Sumbari Andreas Ari Putro Dwinanto Anggria, Linca Anggriawan, Rendy Ardilles Akbar Atang Sutandi Baba Barus Bandung Sahari Bargowo Addianto Boedi Tjahjono Budi Mulyanto Budi Nugroho Budi Nugroho Budi Nugroho Bustami Ibrahim DENO OKALIA Deno Okalia, Deno DWI ANDREAS SANTOSA Dyah Retno Panuju Eka Sari Eko Fitriono Harimurti Fahmi Arief Rahman Fahmuddin Agus Faridlotul Hasanah Gian Juliano Giyanto Giyanto Gunawan Djajakirana Hartono, Arif Iriani Setyaningsih ISKANDAR Iskandar Iskandar Iskandar Iskandar Khairul Anam Khoirunnisa, Nur Syafira Khursatul Munibah Komarsa Gandasasmita Komarsa Gandasasmita Kusuma Handayani Laode Muhamad Asdiq Hamsin Ramadhan Lia Ambasari, Lia Lia Meyana M Munawir MANALU, TUGMA JAYA Muchammad Sri Saeni Muhammad Anggi Imaduddin Muhammad Ardiansyah Mustika Gusnia Sari Nahdlia Putri Alayya NISA RACHMANIA MUBARIK Patmawati Patmawati Purnamasari, Laili Putri, Elsa Kumala Qalbi, Andria Harfani Ramadhan, Risky Rendy Anggriawan Romiyanto Romiyanto Saeni, Muchammad Sri Saksono Raharjo Santun R.P. Sitorus Sari, Retno Purnama SETIARI MARWANTO Siti Nurzakiah Siti Nurzakiah Supiandi Sabiham Suria Darma Tarigan Suryani Suryani Suwardi Suwardi Syaiful Anwar Tengku Afrizal Widiatmaka Yustian Yustian Yustika, Rahmah Dewi