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All Journal Journal of Degraded and Mining Lands Management SAINS TANAH - Journal of Soil Science and Agroclimatology Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) JURNAL PANGAN Jurnal Riset Daerah
Bayu Dwi Apri Nugroho, Bayu Dwi Apri
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Economics, Econometrics & Finance Education Engineering Public Health Social Sciences Other

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Rainfall patterns and land use changes on temporal flood vulnerability in Purworejo Regency, Central Java, Indonesia Putri, Tesya Paramita; Retnowati, Arry; Nugroho, Bayu Dwi Apri; Maulana, Edwin
Journal of Degraded and Mining Lands Management Vol. 12 No. 3 (2025)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2024.123.7739

Abstract

Land use changes and rainfall can trigger inundation. This study aimed to observe the dynamics of spatial patterns of temporal flood vulnerability due to rainfall and land use changes using the Maximum Entropy (MaxEnt) Model. Flood vulnerability was assessed using 12 environmental variables, including elevation, slope gradient, slope direction, slope curvature, Topographic Wetness Index (TWI), flow density, distance from rivers, distance from roads, soil texture, soil aggregates, rainfall, and land use. Rainfall and land use were dynamic variables analyzed in 2013-2023. Past flood occurrence points were obtained using the participatory mapping method. Temporal flood vulnerability mapping in 2013, 2018, and 2023 showed the influence of elevation, Topographic Wetness Index (TWI), and distance from rivers, which were very dominant. Typically, the flood vulnerability pattern formed showed a percentage of moderate (13%), high (17%), and very high (5%) class areas consistently clustered in the southern region. An interesting finding is that rainfall changes have a more significant influence (7.2%), causing the dynamics of high and very high-class vulnerability patterns, compared to the influence of land use changes (0.4%). MaxEnt's flood vulnerability prediction accuracy is classified as very good, as evidenced by its AUC values of 0.835 in 2013, 0.819 in 2018, and 0.824 in 2023. Finally, the findings showed that the accuracy of the MaxEnt Model is classified as very good, so it can be extrapolated globally with similar regional typologies.
Kontribusi Teknologi Irigasi Pompa dan Pemahaman Petani dalam Mendukung Produksi Tanaman Pangan di Lahan Sawah Tadah Hujan Trinugroho, Muchamad; Arif, Sigit Supadmo; Susanto, Sahid; Nugroho, Bayu Dwi Apri; prabowo, abi
JURNAL PANGAN Vol. 32 No. 3 (2023): PANGAN
Publisher : Perum BULOG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33964/jp.v32i3.732

Abstract

Teknologi irigasi pompa di lahan sawah tadah hujan untuk mendukung produksi tanaman pangan sangat dibutuhkan. Penerapan teknologi irigasi pompa harus mempertimbangkan faktor komponen teknologi serta kesiapan sumber daya manusia secara individu maupun institusi. Tujuan penelitian ini adalah menganalisis kontribusi faktor teknologi dan menjelaskan tingkat pemahaman petani terhadap penerapan teknologi irigasi pompa. Metodologi penelitian yang digunakan terdiri dari metode teknometri dan analisis deskriptif menggunakan 40 kuesioner yang diedarkan kepada petani, pengelola kelompok tani, dan pengelola irigasi di Desa Tambakromo di Kecamatan Cepu. Hasil penelitian menunjukkan tingkat pemahaman responden dari kuat sampai sangat kuat tehadap kandungan teknologi technoware, humanware, orgaware dan infoware. Hasil analisis tingkat pemahaman petani terhadap teknologi dan komponennya termasuk dalam kategori kuat dan sangat kuat, sedangkan hasil analisis teknometrik kandungan teknologi menunjukkan teknologi irigasi pompa air dalam kategori semi modern dan tingkatan yang baik. Hasil kajian ini sebagai masukan bagi pemerintah, petani dan pihak yang berkepentingan yang lain dalam menentukan strategi yang tepat dalam penerapan teknologi irigasi di lahan sawah tadah hujan.
Rainfall Thresholds Analysis for Early Warning of Landslides in The Bompon Watershed Ulul Albab, Milya Aflah; Nugroho, Bayu Dwi Apri
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 13 No. 3 (2024): September 2024
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v13i3.628-636

Abstract

The transitional zone between the central and southern morphologies of Java is characterized by steep slopes and thick soil. On the other hand, high rainfall in the area poses a potential threat of landslide hazards. This research is conducted in the Bompon Watershed, located in the transitional zone between Mount Sumbing and the Menoreh Mountains. This study aims to examine the rainfall dynamics leading to landslides in the Bompon Watershed using rainfall threshold analysis. Intensity and duration are selected as parameters to establish the rainfall threshold model. The research findings indicate that long-duration rainfall is the dominant cause of landslides in the Bompon Watershed. High-intensity rainfall can trigger landslides when lasting for more than one day. The established rainfall threshold equation in the Bompon Watershed is I = , where I is intensity and D is duration. The effects of long-duration rainfall include raising the groundwater level, thereby increasing the slope load. The presence of clay in the Bompon Watershed can hinder proper rainwater infiltration. Poorly infiltrated water adds to the slope load and induces slope instability. The calculated rainfall threshold can serve as the basis for early landslide warning systems. Keywords: Landslide, Rainfall threshold, Bompon watershed, Rrainfall intensity, Rainfall duration
Model Denitrification Decomposition (DNDC) Untuk Estimasi Emisi Gas Ch4 Pada Budidaya Padi Metode System of Rice Intensification (SRI) Nihayah, Badi’atun; Nugroho, Bayu Dwi Apri; Hasanah, Nur Aini Iswati
Jurnal Riset Daerah Vol 21 No 3 (2021): JURNAL RISET DAERAH
Publisher : Badan Perencanaan Pembangunan Daerah Kabupaten Bantul

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.64730/jrdbantul.v21i3.59

Abstract

Rice cultivation is the main emission source in the agricultural sector, contributes to greenhouse gases, especially CH4. Reduction efforts CH4 gas emissions in this study carries out by integrating technological components among varieties, fertilizers, and intermittent irrigation through the cultivation of the System of Rice Intensification (SRI) method. This study aims to determine the effect of varieties and fertilization on CH4 gas emissions during one growing season and model CH4 emissions. Denitrification-Decomposition (DNDC) model predicts greenhouse gas emissions, which is CH4 from agricultural ecosystems. It uses a Nested Design with two treatment factors, namely fertilization consisting of manure and MOL (P1) and manure, ZA, SP36, and KCl (P2), and the various treatment, Ciherang (C) and IR-64 (IR). Results of observations showed the highest total CH4 emission was in the P1-IR treatment of 136.36 kg/ha/season, and the lowest was the P2-IR treatment of 88.09 kg/ha/season. Simulation results using DNDC also showed the P1-IR treatment produced the highest total CH4 emissions of 143 kg/ha/season, and the lowest was P2-IR treatment of 59 kg/ha/season. Evaluation of DNDC observation and simulation model for average daily CH4 flux with R2 and RMSE values ​​for each treatment, namely P1-C; P1-IR ; P2-C and P2-IR respectively (R2 = 0.65 ; RMSE = 13.19) ; (R2 = 0.003 ; RMSE = 3.55) ; (R2 = 0.17 ; RMSE = 32.06) and (R2 = 0.35 ; RMSE = 12.25). Results of the DNDC simulation still require optimization for the estimation of CH4 emissions at different fertilization and varieties.
Changes in Rainfall Pattern in Bengawan Solo Sub-Watershed Trinugroho, Muchamad Wahyu; Arif, Sigit Supadmo; Susanto, Sahid; Nugroho, Bayu Dwi Apri; Prabowo, Abi
SAINS TANAH - Journal of Soil Science and Agroclimatology Vol 19, No 2 (2022): December
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/stjssa.v19i2.61640

Abstract

Rainfed farming is vulnerable to climate variability, which changes rainfall patterns.  Rainfall variability disrupts rainfed rice cultivation because a  change in rainfall will affect the rice crop calendar. An analysis of long-term trends over a specific area is required to understand rainfall variability. The aim of this study was to assess climate variability in terms of rainfall magnitude and frequency by analyzing spatial and temporal rainfall trends in Bengawan Solo Sub-Watershed as well as the rainfed rice production. Daily rainfall data from 10 rain gauge stations over the sub-watershed area from the years 1975 to 2020 were used. The data was managed and collected by the Bengawan Solo Watershed authority. Pearson, Mann-Kendall, and Sen’s Slope tests were applied to assess the recorded data correlation, rainfall trends, and magnitude of trends into annual, monthly, and 10-day. The findings of the study indicated the spatial and temporal inhomogeneous rainfall pattern for all locations for 10-day, monthly and annual patterns. The mountainous regions at Tawang Mangu and Ngrambe stations tend to experience an upward trend (positive magnitude), while the coastal regions at Nglirip and Bojonegoro stations have a downward trend(negative magnitude). Those trends also confirmed that coastal regions would be drier than mountainous regions in the future. Understanding this rainfall trend can assist with rainfed farming strategic planning.
Assessing irrigation water demand and pumping operations for rice farming in the Bengawan Solo River, Indonesia Trinugroho, Muchamad Wahyu; Arif, Sigit Supadmo; Susanto, Sahid; Nugroho, Bayu Dwi Apri
SAINS TANAH - Journal of Soil Science and Agroclimatology Vol 21, No 1 (2024): June
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/stjssa.v21i1.79343

Abstract

Owing to population growth, the rice demand in Indonesia has been increasing, which has led to an increase in rice consumption. One way to boost rice production is to enhance pump irrigation in rainfed fields. The aim of this study is to evaluate irrigation water usage and water pumping practices in the Bengawan Solo River, focusing on enhancing rice production. Data were sourced from governmental entities, which include the Indonesian Bureau of Meteorology, Climatology, and Geophysics and the Ministry of Public Works and Housing. Water requirement was calculated using the FAO Penman–Monteith equation. The study highlights that throughout the three distinct growing seasons (GS), the water requirements for irrigating rainfed rice fields vary, with the most substantial demand observed during the first growing season (GS I), followed by the third growing season (GS III), and the second growing season (GS II). In dry years, a consistent pattern of low water balances occurs, which persists below 500 mm across all months. Compared with the other two scenarios, the dry year shows higher variability in rainfall, as evidenced by its higher coefficient of variation of 0.620 compared with 0.347 and 0.416 for the wet and normal years, respectively. The electricity cost rate peaks in GS I, trailed by GS II and GS III, with rates of IDR 2,400, 1,180, and 1,028 per kilowatt-hour, respectively. The findings play a pivotal role in shaping regional planning decisions regarding the utilization and necessity of river water resources and the development of cropping calendars.
Methane (CH₄) emissions exceeding the threshold from chilli cultivation mulching practices in Sleman Regency, Indonesia Ardhitama, Aristya; Nugroho, Bayu Dwi Apri; Sartohadi, Junun; Supari, Supari; Kraningtyas, Reni; Listanti, Riana; Taulani, Khaeruniah Hikmah
SAINS TANAH - Journal of Soil Science and Agroclimatology Vol 22, No 1 (2025): June
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/stjssa.v22i1.98896

Abstract

Methane (CH₄) is a potent greenhouse gas contributing to global warming, although there is limited information on its emissions dynamics in dryland horticulture. Chilli cultivation practices comprising fertilization and mulching may influence CH₄ emissions through alterations in soil temperature and moisture. Therefore, this study aimed to evaluate the effect of different mulching practices on CH₄ emissions and determine the threshold for sustainable chilli cultivation in tropical dryland conditions. A field experiment was conducted in Sleman, Indonesia, using a randomized block design with three mulch treatments. These included unmulched treatment (M0), organic mulch (M1), and plastic mulch (M2), each replicated three times. Gas sampling was performed biweekly for 112 days using the closed chamber method. Soil temperature and Volumetric Water Content (VWC) were recorded using in situ sensors. The results showed that mulch treatments significantly influenced CH₄ emissions (p < 0.001). M1 produced the highest average CH₄ flux (0.114 mg m⁻² h⁻¹), followed by M2 (0.043 mg m⁻² h⁻¹) and M0 (0.016 mg m⁻² h⁻¹). All treatments exceeded the calculated CH₄ threshold of 0.145 mg m⁻² h⁻¹ under certain conditions. These results showed the need for careful mulching selection to reduce environmental impact and support the development of CH₄ emissions threshold for sustainable dryland horticulture.
Co-Authors ABI PRABOWO Aristya Ardhitama, Aristya Arry Retnowati Hasanah, Nur Aini Iswati Junun Sartohadi Kraningtyas, Reni Listanti, Riana Maulana, Edwin Muchamad Wahyu Trinugroho, Muchamad Wahyu Nihayah, Badi’atun Putri, Tesya Paramita Sahid Susanto SIGIT SUPADMO ARIF Supari Supari, Supari Taulani, Khaeruniah Hikmah Trinugroho, Muchamad Ulul Albab, Milya Aflah