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All Journal Jurnal Ilmu Pertanian Indonesia Jurnal Ilmu Tanah dan Lingkungan (Journal of Soil Science and Environment) Indonesian Journal of Geography Journal of Tropical Soils Majalah Geografi Indonesia JURNAL ANALISIS KEBIJAKAN KEHUTANAN Journal of Degraded and Mining Lands Management AGRIVITA, Journal of Agricultural Science Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Jurnal Tataloka MAJALAH ILMIAH GLOBE Journal of Regional and Rural Development Planning Seminar Nasional Lahan Suboptimal JURNAL SUMBER DAYA AIR Jurnal Geografi Lingkungan Tropik (Journal of Geography of Tropical Environments) Jurnal Tanah dan Iklim Jurnal Pusat Inovasi Masyarakat JME (Journal of Mathematics Education) Jurnal Geografi LIngkungan Tropik (Journal of Geography of Tropical Environments)
Dwi Putro Tejo Baskoro
Departemen Ilmu Tanah Dan Sumber Daya Lahan, Fakultas Pertanian, Institut Pertanian Bogor, Kampus IPB Dramaga, Bogor 16680
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Economics, Econometrics & Finance Education Engineering Environmental Science Mathematics Social Sciences Other

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Coal fly ash amendment: affecting soil resistance, water retention, and root growth in sandy soils Jubaedah, Jubaedah; Iskandar, Iskandar; Baskoro, Dwi Putro Tejo; Mulyanto, Budi; Nurida, Neneng Laela; Yustika, Rahmah Dewi; Maswar, Maswar
Journal of Degraded and Mining Lands Management Vol. 12 No. 4 (2025)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2025.124.8421

Abstract

Studies have shown that coal fly ash (CFA) can improve soil physical properties (such as bulk density) and increase available water content. However, its pozzolanic properties may also contribute to soil compaction. The overall impact of these contrasting effects on soil behavior remains insufficiently understood. This study investigated the effects of CFA amendment on soil resistance, water retention, and corn root growth in sandy soil. Using a completely randomized design, the research was conducted at the Taman Bogo Agricultural Station in East Lampung for two planting seasons (October 2022 - June 2023). Four CFA rates (0%, 3%, 6%, and 12% w/w) were applied in lysimeter plots with five replications. The results demonstrated that CFA application reduced soil bulk density (BD) at 6% and 12% rates due to CFA’s lower BD than the soil. However, higher CFA doses increased soil penetration resistance (PR), likely due to surface crust formation rather than pozzolanic reactions. Plant available water capacity (PAWC) significantly increased by 6% and 12% CFA, thus improving soil water retention. Improving physical properties in the second season promoted root growth at the 12% CFA rate. The use of CFA in sandy soils leads to improvement in selected physical properties and enhances water retention. Therefore, while CFA enhances water retention, its effects on soil compaction and root growth must be carefully managed to ensure optimal results.
Parameter Sensitivity Test of SWAT Hydrological Model On Two Different Resolutions (A Case Study of Upper Cisadane Subbasin, West Java) Alim, Nurmaranti; Tarigan, Suria Darma; Tejo Baskoro, Dwi Putro; Wahjunie, Enni Dwi
JOURNAL OF TROPICAL SOILS Vol. 23 No. 1: January 2018
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2018.v23i1.47-53

Abstract

A sensitivity analysis of SWAT parameters was conducted on different spatial resolutions. The sensitivity analysis aimed to determine the input parameters that have the most impact on the of output of the model. Resolution of different inputs in the SWAT analysis can produce different input parameters that can affect the output. The purpose of this study was to identify the level of sensitivity of the parameters used in the SWAT model simulated on two different resolutions, i.e. 1: 100,000 and 1: 250,000. A sensitivity test was conducted manually using the absolute sensitivity method, i.e. a method to test the sensitivity of the parameters of SWAT model that can change (either increase or decrease) one by one while the other parameters are constant. The results show that the Nash-Sutcliffe Efficiency (NSE) coefficients derived after calibration of the SWAT models on both resolutions of maps indicate similar performance of the models, with the category for the daily simulation of excellent (NSE coefficients of 0.55 and 0.54), while the monthly simulation is categorized as very satisfactory (NSE coefficients of 0.80 and 0.82). The sensitive parameters of the SWAT model identified in the current study include CN2 (initial SCS runoff curve number for moisture condition II), Alpha_BNK (flow recession constant or recession proportional to the banks of the river), CH_K2 (effective hydraulic conductivity in main channel alluvium), CH_N2 (Manning’s “n” value for the main channel), ESCO (soil evaporation compensation factor), GW_Delay (groundwater delay), and GW_Revap (groundwater “revap” coefficient).  
CO2 Flux from Tropical Land Uses on Andisol in West Java, Indonesia Hendri, Jon; Sumawinata, Basuki; Baskoro, Dwi Putro Tejo
JOURNAL OF TROPICAL SOILS Vol. 19 No. 3: September 2014
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2014.v19i3.121-130

Abstract

This study measured CO2 flux by segregating effect of root respiration and organic matter decomposition by microbes. The study involved a mineral soil containing high organic matter (Andisols), in the tropic devoted to different land uses i.e. natural forest, tea plantation, and horticultural farm CO2 emission from those land uses were compared to from peatland. Observed CO2 fluxes came out in the following order: bare plot  7.32, tea plantation  10.22, horticultural farm  15.60, and natural forest  15.62 Mg C-CO2 ha-1 yr-1. While, root respiration accounted for substantial proportions: tea plantation  28%, horticultural farm  53%, and natural forest  53%. Soil temperature demonstrated a significant positive correlation with the CO2 flux, except in the natural forest. On the other hand, water-filled pore spaces displayed varying correlation with site CO2 flux: a negative relationship in both bare plot and tea plantation, appreciably positive in the horticultural farm, and weakly related in the natural forest. Soil respiration and C-organic content appeared to be strongly correlated; the rate of soil respiration increased with higher C-organic content. In field, CO2 flux from organic matter decomposition in Andisols, Latosols, and peatland ranged from 5.35-13.22 Mg C-CO2 ha-1 yr-1, with root respiration contributing most of the flux, which was, in turn, influenced by type vegetation, humidity and soil temperature.Keywords: CO2 flux; decomposition; horticultural farm; natural forest; organic matter; tea plantation [How to Cite: Jon H, Suwardi, B Sumawinata and DPT Baskoro. 2014. CO2 Flux from Tropical Land Uses on Andisol in West Java, Indonesia. J Trop Soils 19: 121-130. Doi: 10.5400/jts.2014.19.3.121]     
Soil Aggregate Stability Index on Agricultural, Plantation, and Forest Lands Hidayat, Yayat; Baskoro, Dwi Putro Tejo; Purwakusuma, Wahyu; Siregar, Mariana Sella; Ramadhi, Muhammad Haris Achyar
Jurnal Ilmu Tanah dan Lingkungan Vol 27 No 2 (2025): Jurnal Ilmu Tanah dan Lingkungan
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jitl.27.2.56-62

Abstract

The soil aggregate stability index is one of the critical indicators of soil physical quality, primarily related to the soil's ability to absorb water into the soil and the soil's resistance to rainwater splashing and surface flow erosion in the soil erosion process. The study aimed to determine the soil aggregate stability index class criteria using the dry and wet sieving methods on the OSK 10701 sieve type and to identify the stability of soil aggregates on agricultural land, plantations, and forests around the IPB Dramaga campus. The transformation of the soil aggregate stability class criteria from the conventional sieve to the OSK 10701 sieve types gave excellent results with a coefficient of determination (R2) of 0.89. The soil aggregate stability index differs significantly between soil types and land uses. Podsolic Jasinga has a higher aggregate stability index than Podsolik Dramaga, Regosol Dramaga, and Latosol Dramaga in the upper layer (0-20 cm) and the lower layer (20-40 cm). Forests have a better aggregate stability index than conservation agricultural land, conventional agricultural land, rubber plantations, and oil palm plantations. The difference in stability index between land uses is closely related to soil organic matter contents. Although the soil is denser/more compact, the soil in oil palm and rubber plantations has a lower stability index and is classified as unstable.
Analisis Indeks Kualitas Tanah dan Hubungannya dengan Prdoduktivitas Tanaman Buah Baskoro, Dwi Putro Tejo; Purwakusuma, Wahyu; Hidayat, Yayat; Malahayati, Sri; Wahyu Purwakusuma
Jurnal Ilmu Tanah dan Lingkungan Vol 27 No 2 (2025): Jurnal Ilmu Tanah dan Lingkungan
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jitl.27.2.63-69

Abstract

Soil quality is a determining factor for crop production. Therefore, proper assessment of soil quality—by integrating various soil characteristics into a Soil Quality Index (SQI)—is essential to reflect overall soil productivity. This study aimed to determine the SQI and its relationship to fruit crop productivity across seven locations with varying soil characteristics. The research was conducted at SMK PP Saree and SMKN Nisam in Aceh Province; SMKN Gelumbang and SMKN Banyuasin 3 in South Sumatra Province; SMKN Metro and SMKN Gedong Tataan in Lampung Province; and SMKN Kelapa in Bangka Belitung Province. The SQI analysis used eight key soil parameters considered critical for determining and managing crop growth and productivity, namely: effective soil depth, texture, bulk density, pH, organic matter content, cation exchange capacity (CEC), and base saturation. Each parameter was scored on a scale from 0 to 5. The results showed that the Soil Quality Index can effectively assess soil quality using these eight key parameters as a dataset. The studied soils were categorized as having medium to very good quality, with low organic carbon and low CEC identified as the most common limiting factors. Furthermore, the SQI demonstrated a strong positive correlation with fruit crop performance, with a correlation coefficient (r) of 0.832.
Co-Authors A Akbar Aditia Sapto Utomo Affan Chahyahusna Agis Mulyani Alim, Nurmaranti Andrea Emma Pravitasari, Andrea Emma Andria Harfani Qalbi Ansori Ansori Asti Nurmilah Astrid Aryani Ndun Asyhari, Adibtya Baba Barus Balqis Nur Aisyah Basuki Sumawinata Benadikta Widjayatnika Boedi Tjahjono Budi Mulyanto Carolyn, Rully Dhora Darmawan Darmawan Desy Fatmawati Diyah Novita Kurnianti Dyah Retno Panuju Elianah Elvina Nora Lubis Enni Dwi Wahjunie Enny Dwi Wahyunie Ernan Rustiadi Evi Nursari Evi Nursari Fajar Nugraha Fatmawaty Fatmawaty, Fatmawaty Fatoni, Arif Fayra Parahita Fulki Dwiyandi Araswati Gangga, Adi Gilang Munggaran Harisman Edi Hendi Hendra Bayu Henry D. Manurung Iman Sadesmesli Irvan Zidni Iskandar Iskandar Jepri, Kristoporus Jon Hendri JUBAEDAH JUBAEDAH, JUBAEDAH Khursatul Munibah Komarsa Gandasasmita Kukuh Murtilaksono Kukuh Murtilaksono Kukuh Murtilaksono Latief M Rahman Latief Mahir Rachman Latief Mahir Rachman Leonard Kristofery LILIK BUDIPRASETYO M. Galih Permadi Mahardika, Rabbirl Yarham Mahartika Setianingsih Malahayati, Sri Marisa Dwi Putri Maswar Maswar Maudy Susanti Mohammad Sofyan Muhammad Yahya Fadhil Nabila Nurhaliza Navisha Maulita Dewi Neneng Laela Nurida Nur Etika Karyati Nuraida Nuraida Nurmaranti Alim Nursari, Evi Omo Rusdiana Oteng Haridjaja Purwakusuma, Wahyu Putri, Savitri Khairunnisa Rahmah Dewi Yustika, Rahmah Dewi Rahman, Latief M Ramadhi, Muhammad Haris Achyar Ratna Yestina Ravelle, Adzan Pandu Reni Kusumo Tejo Selamet Kusdaryanto Seniarwan Seniarwan Siregar, Mariana Sella Suria Darma Tarigan Surya Darma Tarigan Syaiful Anwar Tiwi Astriani Toga Pandapotan Sinurat Vinni Lovita Widiatmaka Wistha Nowar Yayat Hidayat Yusuf, Sri Malahayati Zluyan Firdaus Afif