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All Journal Agrikultura AGRIKA JTSL (Jurnal Tanah dan Sumberdaya Lahan) Journal of Degraded and Mining Lands Management Journal of Innovation and Applied Technology Jurnal Ruas (Review of Urbanism and Architectural Studies) AGRIVITA, Journal of Agricultural Science Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Biologi Tropis Lex Renaissance Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Jurnal Bakti Saintek: Jurnal Pengabdian Masyarakat Bidang Sains dan Teknologi PERTANIAN TROPIK Jurnal Ilmiah Sultan Agung Agrimas : Jurnal Pengabdian Masyarakat Bidang Pertanian

Syahrul Kurniawan

Departemen Tanah Fakultas Pertanian Universitas Brawijaya

Author-ID : 302036

Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Immunology & microbiology Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Nursing Physics Public Health Other

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Soil macroporosity, physical properties and nutrient leaching after forest conversion to rubber and oil palm plantation in an Acrisol of Jambi, Indonesia Sri Rahayu Utami; Syahrul Kurniawan; Christanti Agustina; Marife De Corre
Journal of Degraded and Mining Lands Management Vol 9, No 1 (2021)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2021.091.3155

Soil degradation is expected to continue as forest conversion into other land uses increases significantly. In Indonesia, Jambi is one of the main areas for the development of oil palm and rubber, whichare mainly converted from the forest. As a base for better management, we attempted to study macro-porosity in rubber and oil palm plantation, in comparison to secondary forests. Four landuse systems (secondary forest, jungle rubber, rubber plantation and oil palm plantations) in Bukit Duabelas, Sarolangun District, Jambi Province, Sumatera, were selected for this study. The number of macropores in vertical or horizontal planes and their related factors (root mass, litter thickness, % organic C, bulk density, water content at pF 0 and pF 2.54, aggregate stability) were measured within the soil profiles. Forest conversion to jungle rubber, rubber and oil palm plantation led to a decrease of macro-porosity in the soil profile, especially in the upper 50 cm. Macropores, both at vertical and horizontal planes in the secondary forest was significantly higher than other landuses. Horizontal macropores in jungle rubber were higher than rubber and oil palm plantation, but not the vertical macropores. Among the soil properties measured, litter thickness, coarse root dry mass (Ø >2 mm), mesopores and aggregate stability were closely associated with soil macro-porosity. However, macro-porosity in the soil profile was insignificantly correlated to soil bulk density and % organic C. Increasing the number of horizontal macropores resulted in higher nutrient leaching, especially K and Na.

Relationship between land degradation, biophysical and social factors in Lekso Watershed, East Java, Indonesia Iva Dewi Lestariningsih; W Widianto; Christanti Agustina; S Sudarto; Syahrul Kurniawan
Journal of Degraded and Mining Lands Management Vol 5, No 3 (2018)
Publisher : Brawijaya University

Degraded lands are getting extensive worldwide. Even its existence has projected as a solution to fulfill agricultural land scarcity to meet the global demands of food and other agricultural goods, the rate of its extension should be inhibited. Some factors play important role. This research was aimed to find the explanation about how degraded land, biophysical and social factors are related. Research site was located in Lekso Watershed, East Java, Indonesia. Land degradation is assessed by evaluation of the critical land status based on procedure established by Indonesia’s Ministry of Forestry in form of Regulation No. P.32/Menhut-II, 2009.A series of field survey using secondary data obtained from GIS tool performed to collect data for quantify the critical land status. Social factors in this study were limited on people perception, awareness and participation. These data collected by in-depth interview to the respondents. Site of presented respondent selected with purposive sampling, while the respondents in each site selected with stratified random sampling method. The research revealed that surface cover demonstrated high correlation and regression toward critical and very critical land (average r = -0.9822, R2= 0.9648). However, slope steepness located in high altitude showed a contrary trend in which increasing slope steepness decreased the number of total moderate, critical and very critical lands. The functional area of this location as protected forest gave a good surface cover on the steep slope and resulted on small area of degraded land. On the other side, negative perception about cultivation on forest and steep slope resulted in positive correlations with the area of very critical land (r = 0.6710 for cultivated forest, and r = 0.9113 for cultivated steep slope). Moreover, people awareness about flood, landslide and drought gave a negative correlation (r = -0.6274) with critical and very critical area. At last, people participation on farmers’ organization could not be used to elucidate the range of degraded land as the participation in this context did not include the competency building about soil and water conservation values.

Changes in soil characteristics and estimated cost on reclamation of former sand mining land Muhammad Nur Fauzan; Rini Dwiastuti; Sujarwo Sujarwo; Syahrul Kurniawan
Journal of Degraded and Mining Lands Management Vol 9, No 3 (2022)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2022.093.3533

The utilization of natural resources in recent decades is not accompanied by proper and effective management. This has a major impact on environmental degradation in watershed scale and climate change. The study aimed to evaluate changes in soil characteristics at various ages of sand mining and the cost of reclamation of environmental degradation due to sand mining activities. The study was conducted in Sumberbulu Micro Watershed, which is located in Wajak Sub-District, Malang Regency. Soil sampling was collected from un-mined, 2 to 6 years old sand mining and post-mining lands. Natural resource equivalency analysis (REA) was applied for environmental damage assessment and reclamation cost calculation required to restore natural resource services to their original condition. The findings show that sand mining activities significantly decreased soil organic C in 0-40 cm soil depth, resulting in increased soil bulk density and decreased soil porosity at 20-40 cm depth of soil. Sand mining activities by using truck traffic carrying mining products, soil erosion, and the removal of topsoil during mining activities determined changes in soil properties. REA shows that the total area of land that must be reclaimed is 21,487 ha. The land will be reclaimed by revegetation (with maize) to restore the lost function of environmental services and income of local farmers, assuming a reclamation cost of 36,767,500 IDR/ha. Therefore, post-mining land reclamation should be encouraged by the government for mining business actors in Indonesia so that the land can be reused as before.

Spatial variation of soil bacteria communities and its alpha diversity as a potential bioindicator of land degradation Muhammad Yusuf; Adji Ahmad Rinaldo Fernandes; Syahrul Kurniawan; Endang Arisoesilaningsih
Journal of Degraded and Mining Lands Management Vol 8, No 4 (2021)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2021.084.2847

This study aimed at determining the community structure and diversity of soil bacteria in several land-use changes as an environmental bioindicator. This research was conducted in areas of intensive agriculture (PI), monoculture abandoned old-coffee plantation (KTT), mixed-young coffee plantation (HLS), and secondary forest/reference site (RS) in UB Forest (UBF) area, Malang, Indonesia. Soil samples were taken as a composite at three different points in each area using a soil ring at a depth of 0-20 cm. The 16S rRNA gene was used to determine the community structure, species richness, diversity, and ecological index (Chao1, Shannon, Simpson, ACE) of soil bacteria using the NGS approach. Statistical data were analysed using R and QIIME software. The community structure of soil bacteria at the phylum level displayed the same pattern in all study sites where Proteobacteria, Acidobacteria, Actinobacteria, Chloroflexi were the dominant groups. Conversely, the bacterial composition showed differences between study sites at the genus level. Alpha diversity in agricultural areas (PI, KTT, and HLS) was higher than forest area (RS), but it was not followed by bacterial beta diversity. The distinct soil bacteria composition and diversity were influenced by the physicochemical of soil properties in the studied area. Therefore, several bacterial taxa suggested being a potential bioindicator of forest soil degradation due to land-use change in this study. Soil bacterial indicators can be utilized to evaluate or monitor alteration of soil quality in terms of forest restoration or rehabilitation.

Impact of maize conservation agricultural system on nitrogen losses through surface runoff and soil erosion in dryland Fitri Wijayanti; Syahrul Kurniawan; Didik Suprayogo
Journal of Degraded and Mining Lands Management Vol 7, No 1 (2019)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2019.071.1965

Nutrient loss in dry land through surface runoff and soil erosion is thought to dominate the watershed eutrophication. Conservation agriculture is expected to be able to reduce the nitrogen (N) loss into river systems. This study aimed to compare the N total input between conservation and conventional farming systems and to analyze N losses through surface runoff and soil erosion in conservation agriculture compared to conventional farming systems. The study was conducted at Agro-Techno-Park at Jatikerto, Brawijaya University from December 2017 to September 2018. The experiment was designed with three factors, i.e. (1) with and without biogeotextile, (2) No and conventional tillage, (3) application of four kinds of cover crop residues, with three replications. Results of the study showed that conservation agriculture was able to provide higher N inputs into the soil than conventional agriculture. The N loss through surface runoff was relatively low, ranging from 0.03 kg/ha to 0.45 kg/ha. N loss through erosion with conventional tillage and without biogeotextile reached 15 kg/ha to 32 kg/ha. No-tillage practices combined with the biogeotextile application significantly reduce N losses through soil erosion to only 0.3 kg/ha to 5 kg/ha. Conservation agriculture is one of the solutions to overcome the trade-off between the need for increased food production and environmental protection.

Land-use changes and slope positions impact on the degradation of soil functions in nutrient stock within the Kalikungkuk micro watershed, East Java, Indonesia Anita Dwy Fitria; S Sudarto; Syahrul Kurniawan
Journal of Degraded and Mining Lands Management Vol 8, No 2 (2021)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2021.082.2689

Degradation of soil functions in storing and cycling nutrients may be related to topography and land-use change. The research aimed to analyze the impact of land-use changes and slope positions on soil function in nutrient stock within Kalikungkuk micro watershed of East Java, Indonesia. Four different land-uses such as vegetable crops, agroforestry, shrub and forest were selected with three slope positions (e.g. ridge, slope, and valley), and three replications of each. Soil samples were collected at 0-10, 10-30, 30-50, and 50-100 cm depth of soil. Variables measured included soil properties (e.g. bulk density, soil texture, pH, CEC, soil nutrients). Slope positions impact on differences in soil physical (i.e. soil bulk density, soil texture) and chemical (i.e. total N, exchangeable K) properties. In addition, forest conversion to other land-uses (i.e. agroforestry, shrub, vegetable crops) decreased soil nutrient concentration (i.e. total C, total N, Ca, Mg, Na), and consequently resulted in degradation of soil nutrient stocks of especially C and N. The strong positive correlation between soil nutrient stock (e.g. C and N) and vegetation cover such as canopy cover, basal area, and litter (r = 0.63 – 0.78, r table 1% = 0.39) showed the benefit of biodiversity in maintaining soil function on the nutrient stock.

Soil chemical properties in agroforestry and cassava cropping systems in Pati, Central Java Ursulin Sacer Setyastika; Sri Rahayu Utami; Syahrul Kurniawan; Christanti Agustina
Journal of Degraded and Mining Lands Management Vol 9, No 4 (2022)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2022.094.3635

Changes in natural land use for monoculture cropping systems may affect the soil properties over a certain period of time. In an attempt to evaluate soil chemical properties in the cassava cropping system, the research was conducted in Pati Regency, Central Java. Four land use systems were compared, i.e. monoculture cassava (cultivated for 5, 10, and 15 years) and agroforestry systems in two different slopes (i.e., 8-15% and 16-40%), with four replications. Soil samples from each location were taken at a depth of 0-20 and 21-40 cm for soil chemical analysis (pH, cation exchange capacity, organic C, total N, available P, exchangeable K, Ca, and Mg). Soils in agroforestry systems had higher pH, CEC, the content of organic C, total N, exchangeable K, Ca and Mg than in cassava cropping systems, especially on the slope of 8-15%. The soil under 15 years cassava and on the slope of 16-40% had the most degraded soil chemical properties, as reflected by the lowest content of organic C, total N, exchangeable K, and slightly lower CEC and the content of exchangeable Ca and Mg. Soil chemical properties on the slopes of 8-15% were significantly better than on the slopes of 16-40%, especially in CEC and the content of organic C, total N, exchangeable K and Mg. However, there was an unclear pattern of the available P content, which was possibly due to the application of P fertilizer in cassava cropping systems.

The role of humic acid from various composts in improving degraded soil fertility and maize yield Niken R Wandansari; Soemarno Soemarno; Retno Suntari; Syahrul Kurniawan
Journal of Degraded and Mining Lands Management Vol 10, No 2 (2023)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2023.102.4245

Humic acids play a crucial role in ion exchange and metal ion complexes; therefore, they are potentially useful in improving soil fertility and crop yield. This study aimed to explore the role of humic acid (HA) from various composts in improving degraded soil fertility and maize yield. A field experiment was conducted on Inceptisols having low soil organic carbon, nitrogen and available phosphorus contents. Eight treatments of HA formulas and one control were arranged in a randomized block design with three replications. The HA formulas used were combinations of two doses of HA (0.15 and 0.20% of soil on w w-1 base) and four types of HA (HA extracted from bagasse compost, HA extracted from water hyacinth compost, HA extracted from market waste compost, and commercial HA). The results showed that the HA application increased 16-97% of soil organic carbon, total nitrogen, available phosphorus, exchangeable potassium and calcium compared to the control. The formula of commercial HA at 0.15% was the best treatment for inhibiting soil fertility degradation in agricultural land. The best maize yield of 15.13 t ha-1 and starch content of 63.54% was obtained from the application of commercial HA at 0.20%.

Developing landslide susceptibility map using Artificial Neural Network (ANN) method for mitigation of land degradation Heni Masruroh; Amin Setyo Leksono; Syahrul Kurniawan; Soemarno Soemarno
Journal of Degraded and Mining Lands Management Vol 10, No 3 (2023)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2023.103.4479

Landslides are one of the crucial problems that have an impact on land degradation and human life. This study aimed to develop vulnerability maps using ANN to mitigate land degradation in the Bromo Tengger Semeru with the extending area of Universal Transverse Mercator (UTM) Coordinate System Top 91277639, Bottom 911569, Left 692860, and Right 706860. The method applied the Artificial Neural Network (ANN) model using RStudio machine learning. Landslides were mapped using Sentinel Image and Orthomozaic photo interpretation from data acquisition using Unmanned Aerial Vehicle (UAV). The landslide control factor data was obtained through DEMNAS (National Digital Elevation Model) with a spatial resolution of 8 meters. Data normalisation was conducted using the Mix-Max method before it was processed using RStudio. The landslide existing for ANN workflow was processed using the Bioclim model. The results showed landslide susceptibility was categorised into four classes i.e., low susceptibility (29.83%), which was spatially spread on most in the lower slopes, moderate susceptibility (3.11%), high susceptibility (2.99%), and very high susceptibility (15.94) which is scattered on the upper slope to the middle slope of the watershed. The most significant factor influencing the landslide is the topography factor, with a Relative Importance (RI) value of 0.86; the hydrological factor, with an RI of 0.833 and the surface feature, with an RI of 0.355. The results of the landslide susceptibility model are very proper for land degradation mitigation strategies. It has high accuracy through an Area Under Curve (AUC) of 0.965 and a Precision Recall Curve (PRC) of 0.976.

The effect of organic fertilizer application on phytoremediation of heavy metals-contaminated rice fields using Cordyline fruticose and Excoecaria cochinchinensis Karamina, Hidayati; Barunawati, Nunun; Kurniawan, Syahrul; Maghfoer, Moch Dawam
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.2025.123.7789

Inadequate industrial waste management has led to heavy metal contamination in agricultural lands, threatening food productivity and sustainability. This study aimed to evaluate the effect of organic fertilizer application on the phytoremediation of heavy metals (Pb and Cd) contaminated rice fields surrounding the industrial area of Pagak, Malang Regency. The study was initiated by identifying the distribution of Pb and Cd in soil, water, and rice plants. The soil identified with the highest Pb and Cd concentrations was then subjected to a phytoremediation experiment using Cordyline fruticose and Excoecaria cochinchinensis as metal accumulator plants. Organic fertilizers used for the evaluation of the phytoremediation effectiveness were chicken manure, Thitonia, and sugarcane waste. Phytoremediation effectiveness was evaluated based on the Bioaccumulation Factor (BAF) and Translocation Factor (TF). The results of the soil characterization study showed that Pb and Cd concentrations at soil depths of 0-20 cm and 20-40 cm exceeded the permissible limits, with Pb concentrations ranging from 41.62 to 74.93 ppm and Cd concentrations ranging from 0.58 to 1.10 ppm. The results of the phytoremediation experiment showed that Cordyline fruticose exhibited higher Pb and Cd absorption capacity than Excoecaria cochinchinensis at 30 and 60 days after planting), indicated by BAF values of >1. In all treatments, however, both plant species have TF values of <1, indicating that the two plant species are considered suitable for phytostabilization as heavy metals in the soils were more concentrated in the plant roots rather than in the plant shoots.

Co-Authors Abraham M Ridjal Achmad Jauhar Arifin Aditya Nugraha Putra Adji Ahmad Rinaldo Fernandes Albarki, Georona Kusma Albarki, Georona Kusuma Allysa Puspa Saraswati Amin Setyo Leksono Andarini Puspita Anita Dwy Fitria Anita Dwy Fitria Ariska, Ayu Putri Arpangi . Aura Hanita Salsabila Ayu Putri Ariska Aziz, Novryanti Rizqi â€˜Azizah, Siti Nur Bambang Susilo Beauty Laras Setia Pertiwi Budi Prasetya Budi Prasetya Budi Prasetya Budi Prasetya Budi Santoso Cahyo Bagus Susanto Cahyo Prayogo, Cahyo Christanti Agustina Corre, Marife D. Didik Suprayogo Dimas Mahardhika Satriawan Dony Rachmanadi Ema Titisari Endang Arisoesilaningsih Farah Amirat Febiona, Silvia Fitri Wijayanti Futihatu Rizkiani Azizah Fytria Kurniasari Gabryna Auliya Nugroho Gatot Ciptadi Ghani Ilham Prawiradijaya Hadi, Syamsu Ridzal Indra Hidayat, Muhamad Taufiq Hidayat, Muhammad Taufiq Hidayati Karamina Iqbal Rizky Nugroho Iva Dewi Lestariningsih Katili, Wardiman W KIKI FIBRIANTO Kurniatun Hairiah Kurniawan Sigit Wicaksono Kusumawati, Irma Ardi Lenny Sri Nopriani Maghfoer, Moch Dawam Mardiani, Mila Oktavia Marife De Corre Masruroh, Heni Maydella Vista Putri Rinandy Mochtar Lutfi Rayes Muhammad Hilmi Muhammad Nur Fauzan Muhammad Taufik Hidayat Muhammad Taufik Hidayat Muhammad Yusuf Mukharomah, Miftakhul Natajaya, Andrean Navarette, Ian A. Niken R Wandansari Noval Adieb Novalia Kusumarini Novalia Kusumarini Novalia Kusumarini Novryanti Rizqi Aziz Nugroho, Gabryna Auliya Nugroho, Wikan Agung Nunun Barunawati, Nunun Nur Azizah Nur Azizah Nur Azizah Oktari Hermita Putri Omar Nurcholis Purnamasari, Eka Putri Winda Asih Putri, Fenalda Sekar Maretha R Ay Alvisa Talitha Radiananda R Muhammad Yusuf Adi Pujo Nugroho Rahmi Yuniarti Ramadhan, Resa Kharisma Ramadhani, Filka Rana Syahla Refki Aulia Wiwaha Renaldi Sambo Eka Saputra Resa Kharisma Ramadhan Retno Suntari Rinandy, Maydella Vista Putri Rini Dwiastuti Rizki Maulana Ishaq Rizky Eka Putra, Rizky Eka S Sudarto S Sudarto S Sutopo Samudra, Rizki Putra Sekar Mariam Hapsari Siahaan, Adiva Zulaika Azalia Siswanto Siti Azizah Sizilia, Vannya Julia Soemarno Soemarno Soemarno Soemarno Sri Rahayu Utami Sugeng Riyanto Sujarwo Sujarwo Suntyas Siti Nuridayati Syamsu Ridzal Indra Hadi Tri Utami Ursulin Sacer Setyastika Ustiatik, Reni Veldkamp, Edzo W Widianto Wachidiyah Romadhoni Wikan Agung Nugroho Wisynu Ari Gutama Wiwik Handayani Wulandari, Eka Shinta Yulia Nuraini Zaenal Kusuma

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