Authors:Aweke Aysheshim, Desalegn Yayeh Ayal, Messay Mulugeta Pages: 4837 - 4845 Abstract: Planning for continuing natural resource management requires current information on the dynamics of land use and land cover. The aim of this paper was to analyze the impacts of the villagization program on land use land cover dynamics in Benishangul-Gumuz region, western Ethiopia. The study has employed a mixed-method research design using both primary and secondary sources. Multispectral LANDSAT satellite images with a 30 m resolution were acquired for land use land cover change detection between the years 1999, 2009, and 2022. Arc GIS 10.8, QGIS 3.28, ERDAS Imagine 2014, and Microsoft Excel software were used for image classification, accuracy assessment, and change detection. Six different land use land cover types: forest land, shrub and grassland, cultivated land, residential, bare land, and water bodies were identified between 1999 and 2022. The trends indicated a dramatic decrease at the rate of 27.2 ha of forestland, 17.1 ha of shrub and grassland, and 4.6 ha of water bodies per year, while the share of cultivated land, residential, and bare land has expanded at an average rate of 34.3 ha, 11.7 ha, and 2.9 ha per year respectively between 1999 and 2022. The phenomenon was caused by added population pressure due to villagization program, which in turn triggered farmland expansion and deforestation. It is recommended that raising local community awareness, reforestation, practicing land use plans, and promoting successful livelihood diversification could help to alleviate the issue and reroute the course of events in order to achieve sustainable natural resource management. PubDate: 2023-09-30 DOI: 10.15243/jdmlm.2023.111.4837 Issue No:Vol. 11, No. 1 (2023)
Authors:Nurul Puspita Palupi, Roro Kesumaningwati, Subeki Subeki, Kadis Mujiono, Sofian Sofian, Swandari Paramita, Enos Tangke Arung Pages: 4847 - 4862 Abstract: Ultisols in Indonesia have the potential for agricultural development, but the soils have low pH and nutrient contents that hinder plant growth and yield. Using animal manure can be an alternative to improve soil productivity and crop yields. This study aimed to examine the effects of animal manure on the chemical properties of Ultisol, yield, and secondary metabolic of Zingiber montanum. The treatments tested were combinations of types of manure (cow and chicken manure) and manure application levels, namely P0 (control), P1 (cow manure 20 t/ha), P2 (cow manure 40 t/ha), P3 (cow manure 60 t/ha), P4 (chicken manure 20 t/ha), P5 (chicken manure 40 t/ha), and P6 (chicken manure 60 t/ha). The results showed that the application of chicken manure of 60 t/ha increased N and P contents of the soil, and the application of cow manure of 60 t/ha increased soil cation exchange capacity. The application of cow manure of 60 t/ha gave the highest plant height, the number of leaves, and the number of at 18 weeks after planting, while the application of chicken manure dose of 60 t/ha produced the longest plant roots. The highest fresh and dry rhizome weight was observed for the 60 t/ha cow manure treatment. The highest secondary metabolic levels in each parameter were found in dry rhizomes (phenolic, flavonoid, and tannin) and fresh rhizomes (phenolic and flavonoid), with the highest tannin compound in the treatment of 40 t chicken manure/ha. The application of chicken manure at a dose of 60 t/ha resulted in a strong antioxidant yield in fresh and dry rhizomes. PubDate: 2023-09-30 DOI: 10.15243/jdmlm.2023.111.4847 Issue No:Vol. 11, No. 1 (2023)
Authors:Edy Jamal Tuheteru, Faisal Danu Tuheteru, Pantjanita Novi Hartami, Muhammad Burhannudinnur, Suryo Prakoso, H Husna, A Albasri, Dian Asraria Pages: 4863 - 4873 Abstract: This study aimed to investigate the effect of gold mining on soil properties. Soil samples were taken from the post-gold mining land, the property of PT Panca Logam Nusantara and PT Alam Buana Indonesia, and a nearby natural forest in Bombana, Southeast Sulawesi Province. The next step focused on specifying soil pH, total nitrogen (TN) and carbon (TC) concentration, C/N ratio, available phosphorus (P) concentration, cation exchange capacity (CEC), and exchangeable K, Na, Mg, Ca, Fe, Mn, Cd and Pb concentration, texture and spore amount, AMF resource and AMF colonization. The result shows that the pH in post-gold mining soil was higher than that in natural forest soil. Meanwhile, TN, TC, available P, and CEC of post-gold mining soil got lower compared with these of natural forest soil. The texture in the post-mining soil was clay loam, while that in natural forest soil was clay. Total of 10 AMF species belonging to five genera and three families were found in a post-gold mining area. Soil pH, CEC, soil texture, Mn, and total Fe had a negative relation with AMF colonization and spore count, while organic C, total N, C/N ratio, P2O5 and silt had a positive relation. Sand was proven to have a strong and positive correlation with the amount of AMF species. Adding organic matter and fertilization as well as applying mycorrhizal biofertilizers, were urgently required to support the effort in restoring post-gold mining soil. PubDate: 2023-09-30 DOI: 10.15243/jdmlm.2023.111.4863 Issue No:Vol. 11, No. 1 (2023)
Authors:Iswandi Umar, Dian Adhetya Arif Pages: 4875 - 4885 Abstract: Indonesia is an agricultural country and one of the world's rice-producing countries. However, the increase in population has pushed for the conversion of agricultural land to non-agricultural purposes. Solok is a district with the largest paddy field area in West Sumatra. Yet, the increase in population has resulted in a decrease in paddy fields every year. This study aimed to determine the model for changing the area of paddy fields for the 2000-2020 period and determine the direction of sustainable agricultural policies. In defining the paddy field change model, this research uses the input data from the interpretation of 2000 Landsat 5 imagery, 2010 Landsat 7 imagery, and 2020 Landsat Oli 8 imagery. The data were analyzed using a geographic information system (GIS). This research employed the Powersim Software with a system dynamics approach in projecting rice production and demand. This research used Interpretative Structural Modeling (ISM) analysis to determine the direction of sustainable food policy. The results showed that there had been a conversion of 13,801.6 hectares of paddy agricultural land into a built-up area in the 2000-2020 period in Solok District. In 2020, Solok District supplied 2,838 thousand tons of rice, while the demand for rice was 446.3 thousand tons. In the direction of the sustainable agriculture policy, there are three key sub-elements; tightening land use permits, establishing and implementing spatial planning regulations, and consistency in enforcing spatial planning violation laws. PubDate: 2023-09-30 DOI: 10.15243/jdmlm.2023.111.4875 Issue No:Vol. 11, No. 1 (2023)
Authors:Muhammad Haikal Razi, Wahyu Wilopo, Doni Prakasa Eka Putra Pages: 4887 - 4897 Abstract: Groundwater is the primary water resource used for domestic, industrial, and agricultural needs for the community in the Yogyakarta-Sleman Groundwater Basin area. The urbanization rate has increased since the 1970s and has made massive use of groundwater, causing environmental problems, including the quality and quantity of groundwater. Therefore, this study aimed to investigate the spatiotemporal groundwater fluctuation trends based on the non-parametric Mann-Kendall test and recharge rate estimation using the water table fluctuation (WTF) method. The groundwater level data were collected from monitoring wells across the study area during 2018-2022, particularly emphasizing 8 wells representing recharge, transition, and discharge areas. The results showed that the groundwater fluctuation pattern generally followed the season. During the rainy season from January to April, groundwater reached the shallowest level and began to decline gradually when it entered the dry season from May to October. Groundwater recharge rate was estimated to vary from 171.49 to 1,505.56 mm/year. Meanwhile, the Mann-Kendall test showed that most of the Yogyakarta-Sleman Groundwater Basin area did not experience significant fluctuation trends, except for two monitoring wells in the center of Yogyakarta City which had increasing groundwater level trends. The rising groundwater levels were expected to be caused by urban wastewater recharge. This study has provided a new description and insights into spatiotemporal changes in the groundwater table and the quantification of groundwater recharge. PubDate: 2023-09-30 DOI: 10.15243/jdmlm.2023.111.4887 Issue No:Vol. 11, No. 1 (2023)
Authors:Indra Agus Riyanto, Ahmad Cahyadi Pages: 4899 - 4908 Abstract: Epikarst springs are the main source of water used by the community in the western part of Gunungsewu Karst Area. One of the springs found in Gunungsewu karst area is Guntur Spring, with a catchment area that functions as agricultural land and settlements. Guntur Spring has connectivity between swallow holes and karst windows, so the spring can easily be polluted; therefore, a temporal study is needed regarding the water quality. The methods used were analysis of water quality standards, Schoeller diagrams, triangular Piper diagrams, and scatter plots. The results of the analysis of water quality standards showed that only Ca2+ and HCO3- ions and a small portion of Na+ exceeded WHO standards. The results of the Schoeller diagram analysis showed that the dominant ions were Ca2+ and HCO3-. The results of the Piper diagram analysis showed that the Guntur Spring is included in the classification of types I, J, and M, indicating the spring is not polluted. The results of the Piper diagrams showed that Guntur Spring is included in the dominant types of types C, A, G, D, and F, indicating the springs are not included in the polluted category. The scatter plot analysis of the Ca2+ + Mg2+ versus HCO3- + SO42- showed that the dominant ion in the Guntur Spring came from the dissolving of limestone. The scatter plot analysis of HCO3- versus Na+ indicated that the main process that forms Guntur Spring ions is not the dissolving process of silicates. The scatter plot analysis of Cl- - SO42- versus Na+ indicated that the main process that forms Guntur Spring ions is not the dissolving process of sodium/sodium sulfate and halite. There was one sample in the Cl- versus Na+ scatter plot analysis that showed an indication of an anthropogenic pollution. However, the overall analysis showed that anthropogenic activities in the study area do have a major impact on the water quality of the epikarst springs at the study site. PubDate: 2023-09-30 DOI: 10.15243/jdmlm.2023.111.4899 Issue No:Vol. 11, No. 1 (2023)
Authors:Mochtar Lutfi Rayes, N Nurdin, Endang Listyarini, Christanti Agustina, Asda Rauf Pages: 4909 - 4925 Abstract: Maize has attracted the attention of local governments due to its high yield potential and economic prospects, but the strategic value of this commodity has not been specific to particular locations. Therefore, this study aimed to assess degraded land suitability and determine the regional comparative advantages for maize development in the Gorontalo sustainable agriculture areas. The suitability class was assessed using Automatic Land Evaluation System software, while comparative advantages were determined using input-output and regional analysis. The input-output analysis was based on maize farming data from interviews with 80 farmers. This study also employed location quotient, specialization index, and localization index analyses based on maize, rice, and soybean production data for 2014, 2016, and 2018. The results showed that land degradation caused by soil erosion was dominated by moderate, heavy, and very heavy categories. Most of the actual land suitability for maize was classified as marginal suitable (S3) but became very suitable (S1) and moderately suitable (S2) after the limiting factors were improved. Furthermore, maize was profitable for the land suitability classes of S1, S2, and S3, and the commodity was most concentrated in Mootilango District. Based on the results, land management recommendations followed a pattern of recommendation I > II > III > not recommended. PubDate: 2023-09-30 DOI: 10.15243/jdmlm.2023.111.4909 Issue No:Vol. 11, No. 1 (2023)
Authors:Leny Sri Nopriani, Cahyo Prayogo, Soemarno Soemarno, Atikah Atikah, Zaenal Kusuma Pages: 4927 - 4934 Abstract: High-traffic highway crossing agricultural fields impacts the quality of food crops grown on Vertisol agricultural fields in Pasuruan. Lead (Pb) released from the exhaust of motor vehicles into the air can eventually enter the soil and be absorbed by plants. This study aimed to examine the effect of Pb from exhaust motor vehicles emission on the Pb status and its behavior in soil, water, and plants. The study was initiated by conducting a survey to determine the sampling locations in selected inundated paddy and maize cropping systems. A stratified random sampling method was used to collect soil, water, and plant samples. The soil of the study area is dominated by Vertisol, with clay content ranging from 54% to 76%. The soil attributes a high cation exchange capacity ranging from 80.53 meq 100 g-1 to 93.57 meq 100 g-1. Pb emitted from 2,913,000 vehicles within four months period that entered the agricultural field was not absorbed by paddy and maize crops. Pb entered the soil in the adsorbed form, and no Pb was observed in the soluble form, so it was not absorbed by the roots. In the paddy field, the total Pb of 84.33% was influenced by pollutant distance. Likewise, in the maize field, 83.18% of total Pb was influenced by pollutant distance. The far the pollutant distance from the agricultural field, the lower its total Pb. Paddy field water is adsorbed onto the colloidal clay, which is dispersed due to inundation and sloughing of the paddy, moving with the clay and then dissolved in the water flow. PubDate: 2023-09-30 DOI: 10.15243/jdmlm.2023.111.4927 Issue No:Vol. 11, No. 1 (2023)
Authors:Dessy Citra Rahmawati, Hayati Sari Hasibuan, Sri Setiawati Pages: 4935 - 4948 Abstract: Urban expansion occurs in big cities in Indonesia, including Batu City. An increase in the built-up area occurred in Batu City by 554.4 ha or 2.78%, and a decrease in agricultural land by 341.1 ha occurred in 2008-2018. If the Batu City government does not pay attention to the availability of environmental services or consider the geomorphological conditions of Batu City for developing settlements. In that case, it will have an environmental impact. The environmental problem in Batu City during the 2009-2019 period was an increase in greenhouse gases by 0.75% per year. Batu City is located in a hilly area. It is necessary to explore land capability in Batu City so that land use planning follows its environmental services and is sustainable. This study aimed to determine the land capability for settlements in Batu City based on the Regulation of the State Minister for the Environment Number 17 of 2009 concerning Guidelines for Determining Environmental Supporting Capacity in Regional Spatial Planning. This study used a geographic information system (GIS) and ArcGIS 10.8 software. The method used was overlapping soil texture, slope, drainage, effective soil depth, erosion, and flood potential maps. Batu City has a slope of 30-45% and a total area of 6,581.03 ha or 33% of the area of Batu City. The largest erosion rate reached 10,326.33 ha or 52% of the total area of Batu City. Erosion occurs on land used for agriculture or moorland. Soil protection and erosion control measures are strongly recommended. The area around Batu City, 1,174.28 ha, experienced considerable erosion, and 2,631.62 ha of land in Batu City is used for settlements. Land capability analysis can determine the starting point or basis for settlement land management in Batu City, which has a slope of more than 15%. There are only 461.9 ha of land management for settlement which follows the regional spatial planning and land capability in Batu City, spread over three different districts. PubDate: 2023-09-30 DOI: 10.15243/jdmlm.2023.111.4935 Issue No:Vol. 11, No. 1 (2023)
Authors:Basuki Basuki, Nina Sulistiawati, Dimas Verdian, Zahrotun Naely Pages: 4949 - 4959 Abstract: Jember is surrounded and limited by highlands such as Mount Argopura, Mount Ijen, Mount Argopura, and the southern karst mountains. In 2015-2022, the Jember area flooded during the rainy season and dried during the dry season. Changes in land cover that do not follow the science of soil preservation will cause disasters, including landslides and erosion. The purpose of this study is to assess the risk of landslides on the slopes of Mount Argopura through the Geographic Information System. The study used a field survey method that was divided into several stages, including making a working map, conducting a field survey, and analyzing the data in the laboratory. The sensitivity analysis of the landslide level used as the basis for the assessment used the relationship between the parameters of soil erodibility, soil erosion, slope and soil conservation, and slope length. The sensitivity of the level of landslide risk on Mount Argopura is divided into five classes, from very light to very heavy. The very light category covers 4.92% of the total area with erosion of 0.47 t/ha/year. The very heavy class covers 39.70% of the total area, with 1,360.79 t/ha/year erosion. PubDate: 2023-09-30 DOI: 10.15243/jdmlm.2023.111.4949 Issue No:Vol. 11, No. 1 (2023)
Authors:Junjira Thipraksa, Panisa Michu, Pimprapa Chaijak Pages: 4961 - 4967 Abstract: The microbial fuel cell (MFC) is a device that harnesses microbial metabolism to convert chemical energy into bio-electrical energy. Extensive research has demonstrated its efficacy in both wastewater treatment and power generation applications. This study focused on the integration of a microbial fuel cell (MFC) with a biocathode constructed using the oxidoreductase-producing bacterium Bacillus sp. MCO22 and rice straw as a cost-effective substrate. The MFC utilized palm oil mill effluent (POME) as a chemical energy source for electricity generation in the anodic chamber. The ability of the MFC was evaluated by monitoring biochemical oxygen demand (BOD) activity and electrochemical properties. Post-operation, chemical oxygen demand (COD) and color removal were measured. The results revealed that the MFC with the BOD-based cathode achieved a maximum current density and power density of 0.58±0.01 A/m2 and 0.17±0.00 W/m2, respectively. Furthermore, it exhibited high COD and color removal rates of 95.10±0.10% and 98.53±0.33%, respectively, without requiring an external power supply. This study presents novel insights into utilizing a BOD-producing bacterium as a whole-cell biocatalyst on the MFC cathodic surface for both electricity generation and agricultural wastewater treatment. PubDate: 2023-09-30 DOI: 10.15243/jdmlm.2023.111.4961 Issue No:Vol. 11, No. 1 (2023)
Authors:Muhammad Fadhil Anshari, Adji Achmad Rinaldo Fernandes, Amin Setyo Leksono, Endang Arisoesilaningsih Pages: 4969 - 4977 Abstract: This study aimed to screen some potential local seed grains for hydroseeding and describe their characteristics based on the literature review and a year of hydroseeding application. This study used six species/variants of Poaceae (Coix lacryma-jobi, Eleusine indica, Setaria italica (brown, black, and red), Sorghum timorense, S. bicolor, Themeda arundinaceae), five species of Leguminosae (Adenanthera pavonina, Cajanus cajan, Sesbania grandiflora, S. sesban, Indigofera sp.), a species of Cyperaceae (Cyperus javanicus), Sapindaceae (Sapindus rarak), Rhamnaceae (Ziziphus jujuba), and Moringaceae (Moringa oleifera). A seed germination test was held using soil media placed in 5 pots per species until 15 days after sowing (DAS). Characters were scored, and data were statistically analyzed. A field record of one-year hydroseeding applied on 6 m x 6 m post-coal mining land plot was presented. Some data such as pH H2O, pH KCl, conductivity, and soil organic carbon among hydroseeding areas, unrevegetated areas, and reference sites were observed. Results showed that there were 13 of 17 species could variably germinate. The fastest germination time was recorded for S. timorense, S. bicolor, red S. italica, C. cajan, and S. grandiflora, while the highest germination rate (≥50%) was black S. italica (80%), brown S. italica (58%) and S. bicolor (50%). The annual black and brown S. italica, S. bicolor, and S. timorense were highly recommended to be used in hydroseeding. The perennial C. cajan, Indigofera sp., S. sesban, and T. arundinaceae were also potential to be added into a hydroseeding slurry to improve pioneer vegetation multilayering structure and diversity. PubDate: 2023-09-30 DOI: 10.15243/jdmlm.2023.111.4969 Issue No:Vol. 11, No. 1 (2023)
Authors:Ismed Inonu, Deni Pratama, Riko Irwanto, Kurniahayati Utami Ningsih Pages: 4979 - 4984 Abstract: Tailing post-tin mining land has a sandy textured and loose structure. Those physical properties can affect the efficiency of fertilization and cause inefficiency of nutrient absorption in plants. That issue can be corrected by the application of organic material such as cow manure compost which has the potential for plant cultivation, especially for “porang” (Amorphaphillus oncophyllus Prain). This study aimed to examine the cultivation of porang plants in post-tin mining tailings by applying cow manure compost and to determine the best dose of cow manure compost for porang cultivation in artificial ex-tin mining land. This study used a single-group randomized design method with the treatment factor being the dose of cow manure compost consisting of five dose levels (5 t ha-1, 10 t ha-1, 15 t ha-1, 20 t ha-1, and 25 t ha-1). Each treatment level was replicated with five replications, and each replication consisted of five populations so the total population was 125 plants. The results showed that the application of various doses of cow manure compost to artificial post-tin mining land affected the growth and yield of porang plants. The treatment of cow manure compost at a dose of 25 t ha-1 gave the best growth and yield of porang plants. Heavy metal (Pb) analysis on porang tubers showed that all doses of cow manure compost had a Pb content value of <0.059%, which means that cow manure compost can reduce heavy metal uptake in porang tubers. Porang planted in artificial post-tin mining land is safe for consumption because lead (Pb) content was below the threshold of Indonesia National Standard (SNI) for food. PubDate: 2023-09-30 DOI: 10.15243/jdmlm.2023.111.4979 Issue No:Vol. 11, No. 1 (2023)
Authors:Aleksandr K Kirsanov, Evgeny S Mayorov, Pavel V Katyshev, Victor E Kislyakov Pages: 4985 - 4997 Abstract: Artisanal and small-scale coal mining (ASM) in Africa presents a complex challenge where environmental conservation and socioeconomic development must be carefully balanced. This article explores the intricate dynamics surrounding ASM in the African context, highlighting the multifaceted impacts on the environment and the socioeconomic well-being of local communities. Artisanal and small-scale coal mining is often characterized by low capital investment, limited mechanization, and dependence on manual labor. Despite this, miners face numerous problems due to the unstable socioeconomic situation and weak labor legislation. The article describes the practice of ASM in Africa: provides an overview of the growing significance of ASM in Africa, and sets the stage for understanding the intricate trade-offs faced in managing this sector. The development of ASM in Africa is examined, considering its historical context, drivers, and patterns of growth, emphasizing the need for context-specific approaches to address its complexities. The article delves into the environmental challenges posed by ASM, focusing on deforestation, land degradation, water and air pollution, and the loss of biodiversity. It examines the specific manifestations of these challenges in selected African countries, shedding light on the varied ecological consequences and their ramifications for sustainable development. Additionally, the socioeconomic dimensions of ASM are explored, acknowledging its potential as a livelihood source for many communities while also recognizing the social and economic vulnerabilities associated with it. The article discusses the interplay between ASM and local economies, including job creation, income generation, and the broader implications for poverty alleviation and sustainable development. PubDate: 2023-09-30 DOI: 10.15243/jdmlm.2023.111.4985 Issue No:Vol. 11, No. 1 (2023)
Authors:Mochammad Roviq, Anna Satyana Karyawati, Puri Kholifatush Sholihah, Ellis Nihayati Pages: 4999 - 5006 Abstract: Temulawak or Javanese turmeric (Curcuma xanthorrizha Roxb.) has great adaptability and is tolerant of low light intensity; therefore, it may be planted on calcareous soil under teak stands. However, temulawak may thrive in soils with a pH of 5.0-6.5 and plenty of organic matter. Calcareous or alkaline soils have problems with high pH and low organic matter. These conditions can be improved with soil amendments. Manure and other soil amendments can remedy soil structure, chemistry, and organisms. Sulfur is generally used to lower soil pH. Sulfur is a structural component of several coenzymes, chloroplasts, and vitamins essential for plant metabolism. This study aimed to elucidate the effect of manure and sulfur fertilizer on temulawak yield and quality grown on calcareous soil beneath teak stands. This study used a completely randomized block design with two factors: manure doses of 10, 15, and 20 t ha-1 and ZA doses of 0, 40, 80, and 120 kg ha-1. According to the findings, the soil pH to increase the rhizome’s fresh weight per clump is between 5.72 and 6.00. In terms of curcuminoid content and antioxidant activity, the soil pH required by temulawak ranges from 5.94 to 6.61. PubDate: 2023-09-30 DOI: 10.15243/jdmlm.2023.111.4999 Issue No:Vol. 11, No. 1 (2023)
Authors:Ayunda MIlla Puspita, Langgeng Wahyu Santosa, Tjahyo Nugroho Adji Pages: 5007 - 5015 Abstract: This study aimed to analyze the level of damage to the groundwater environment in terms of groundwater quality in the coastal area of Parangtritis and its surroundings. This research study unit is based on the landform unit and activities of the community. The research location is located in Parangtritis Village, Yogyakarta Special Region (DIY) Province. This study used a descriptive quantitative analysis as its method of analysis. This study used primary data obtained by testing groundwater samples in the laboratory. The groundwater sampling technique is carried out using the purposive sampling area. Groundwater sampling was carried out on eleven land units. The determination of the level of environmental damage to groundwater is carried out using the Pollution Index (IP) method referring to the Regulation of the Minister of Environment Number 115 of 2003. The results showed that the environmental damage to groundwater shows the quality status of lightly polluted water with pollutant index values ranging from 1.244-4.176 with variable pollutants chemical oxygen demand (COD), dissolved oxygen (DO), ammonia, nitrate, phosphate, and total coliform as well as with sources of pollutants from settlements, livestock, and agricultural activities. PubDate: 2023-09-30 DOI: 10.15243/jdmlm.2023.111.5007 Issue No:Vol. 11, No. 1 (2023)
Authors:Wiwin Sumiya Dwi Yamika, Nevy Kusuma Dewi, Budi Waluyo, Nurul Aini, Husni Thamrin Sebayang Pages: 5017 - 5024 Abstract: Cutleaf groundcherry (Physalis angulata L.) has the potential to be developed in various areas, including dryland. Information on drought-tolerant varieties, lines, or genotypes is needed for the development of cutleaf groundcherry in dryland. Selecting drought-tolerant lines is an alternative for alleviating yield loss potency caused by water shortages. A pot experiment that aimed to investigate the response of cutleaf groundcherry lines to a different level of water deficit, expressed in field capacity (FC), was run in two factors of factorial randomized block design. Each line (PA-01, PA-03, PA-05, PA-08) was set up in water deficit treatment (100, 80, 60, 40, and 20% FC). The result showed that vegetative growth and fruit production, such as fruit number and weight, mainly decreased at 60 or 40 % FC. In contrast, TSS increased at a higher water deficit which was in line with total flavonoid content, even inconsistently. PA-03 and PA-08 experienced a reduction in fruit weight at 40% FC, whereas other lines occurred at 60% FC. Water use efficiency (WUE) increased under severe water stress. Compared to other lines, PA-03 and PA-08 exhibit higher WUE at 60% FC. In conclusion, PA-03 and PA-08 lines were tolerant of water deficit. PubDate: 2023-09-30 DOI: 10.15243/jdmlm.2023.111.5017 Issue No:Vol. 11, No. 1 (2023)
Authors:Issah Baddianaah, Ibrahim Abu Abdulai, Felix Dordaa Pages: 5025 - 5036 Abstract: In recent times, what is common in the scientific literature is findings showcasing the environmental and social menaces associated with artisanal and small-scale mining (ASM)–low-tech, low capital investment, and labor-intensive mineral extraction and processing. However, a better understanding of how ASM shapes livelihood and rural economies may present nuances as to how its negative ramifications can be addressed. As a result, this paper examines how galamsey engenders livelihoods and the transformation of rural economies in Ghana. We produced a nuanced counter-debate to the widely held view that galamsey is evil and a menace to national development by sourcing data from 236 operators using a questionnaire and key informant interviews with 11 relevant stakeholders in north-western Ghana. Findings show that galamsey is a source of employment, income, and accumulation of assets such as houses, motorbikes, cars, and filling stations, which together make the local economy thrive, thereby fostering a local economic boom. However, there is limited collaboration between regulatory agencies and local stakeholders in implementing sustainable mining policies in Ghana. To address this problem, the government should engage local community actors such as the chiefs and landlords, assembly members, and the lead miners on possible steps to streamline and effectively monitor galamsey operations as opposed to military clamp downs. PubDate: 2023-09-30 DOI: 10.15243/jdmlm.2023.111.5025 Issue No:Vol. 11, No. 1 (2023)
Authors:Edwin Permana, Kiranti Aulia, Herman Aziz, Sri Djangkung Sumbogo Murti Pages: 5037 - 5046 Abstract: Using fertilizers is one of the efforts to increase crop productivity, but conventional fertilizers tend to be easily leached so it becomes ineffective. Slow-release fertilizer (SRF) is a modified fertilizer that releases nutrients slowly or gradually so that the use of fertilizer becomes more effective. SRF can be synthesized by mixing fertilizers with zeolite as a slow-release agent. Because natural zeolite contains many impurities that cover the pores of the zeolite, it is necessary to carry out an activation process to increase the pore capacity of the zeolite so that the process of absorption of nutrients in the SRF becomes more leverage. This study aimed to synthesize NPKSMg slow-release fertilizer with coconut shell biochar and activated natural zeolite for red onion plants (Allium ascalonium). Coconut shell biochar was used as a source of potassium. The activation process of natural zeolite was carried out by the desilication method using a basic solution of NaOH as an activator. Based on the results of research using activated natural zeolite on SRF, the surface structure of SRF became more porous, with a porosity percentage of 69.31%. In addition, the use of activated natural zeolites increased the absorption of nutrients in fertilizers. The use of biochar in SRF increased the percentage of porosity by 66.32%. The use of coconut shell biochar as a matrix and activated natural zeolite as a slow-release agent in SRF NPK S Mg for red onion plants has succeeded in increasing red onion yields. PubDate: 2023-09-30 DOI: 10.15243/jdmlm.2023.111.5037 Issue No:Vol. 11, No. 1 (2023)
Authors:S Suhartini, Hendro Prasetyo, Wisynu Ari Gutama, Muhammad Fajar Maulana, Baroroh Nur Jihad, Daffa Sandi Lasitya, Ahmad Khusni Pages: 5047 - 5058 Abstract: Sand mining activities on agricultural land and rivers in Bambang Village, Wajak District, Malang Regency, have been ongoing for a long time. The sand mining activities on private agricultural lands, besides being illegal, also damage the land and the environment. In addition, these sand mining activities are also unsustainable. This study aimed to analyze and formulate sustainable alternative livelihoods of sand miners on agricultural lands in Bambang Village, Wajak District, Malang Regency, based on local resources. The study method was carried out using a combination of case studies and survey methods, accompanied by in-depth interviews and field observation. The in-depth interviews were conducted by interviewing 60 respondents for key informants from miners, farmers, many stakeholders, and experts that were selected purposively. The data obtained were analyzed using a multi-criteria analysis (MCA), namely PROMETHEE (Preference Ranking Organization Methods for Enrichment Evaluation) program to formulate sustainable alternative livelihoods. The results showed that the best alternative sustainable livelihood at this location is agriculture. The second best alternative sustainable livelihood is ecotourism, the third is animal husbandry, and the fourth is informal sectors based on local resources. The government should support the development of agriculture, ecotourism, animal husbandry, and the informal sectors in the village. PubDate: 2023-09-30 DOI: 10.15243/jdmlm.2023.111.5047 Issue No:Vol. 11, No. 1 (2023)
Authors:Suwari Akhmaddhian, Toto Supartono, Dikha Anugrah, Sarip Hidayat, Haris Budiman, Erga Yuhandra, Wawan Setiawan Pages: 5059 - 5071 Abstract: The effective management of natural resources is critical in achieving environmental sustainability, and it requires a careful balance of ecological and economic interests. Therefore, this study analyzed the effectiveness of village government policy in managing post-mining land for environmental sustainability using a non-doctrinal legal approach. Primary data were collected through interviews and observations, while secondary data came from regulations, scientific journals, and papers related to post-mining land rehabilitation governance. The study was conducted in Sukageuri View, Kuningan Regency. The study found that the policy implemented by the Cisantana Village Government in managing post-mining land through the establishment of the Village-Owned Enterprise (VOE) in 2016 has been effective. The area, formerly known as Sukageuri View, is home to various flora and fauna species, with several businesses operating and over 114,000 visitors engaging in social activities in 2022. Additionally, the site has contributed to the village's original income and supported the work program of the Cisantana Village Government. In conclusion, the policy implemented by the Cisantana Village Government effectively balances ecological, social, and economic factors, meeting the criteria for environmental sustainability. PubDate: 2023-09-30 DOI: 10.15243/jdmlm.2023.111.5059 Issue No:Vol. 11, No. 1 (2023)
Authors:Ni Made Trigunasih, I Wayan Narka, Moh Saifulloh Pages: 5073 - 5083 Abstract: Volcanic eruptions are natural disasters with significant environmental and societal impacts. Timely detection and monitoring of volcanic eruptions are crucial for effective hazard assessment, mitigation strategies, and emergency response planning. Remote sensing technology has emerged as a valuable tool for detecting and assessing the effects of volcanic eruptions. One of the challenges in remote sensing image processing is handling large data dimensions that are difficult to address using traditional methods. Machine learning approaches offer a suitable solution to tackle these challenges. Machine learning demonstrates increasing computational capabilities, the ability to handle big data and automation. This study aimed to compare different machine learning classification algorithms, including Random Forest (RF), Support Vector Machine (SVM), Gaussian Mixture Model (GMM), and K-Nearest Neighbors (KNN). The data utilized in this study was derived from Sentinel-2A Multi-Spectral Instrument (MSI) imagery, which was tested in areas affected by the eruption of Mount Agung, Bali Province, in 2017. The results indicated that the GMM algorithm performed the best among the machine learning classifiers, achieving an Overall Accuracy (OA) value of 82.04%. It was followed by RF (78.86%) and KNN (77.55%). The areas affected by volcanic eruptions were determined by overlaying disaster-prone regions with areas mapped using the machine learning approach. The total affected area was measured as 29.89 km2, with an additional 3.31 km2 outside the designated zone. The findings of this study serve as a guideline for governmental entities, stakeholders, and communities to implement effective mitigation efforts for disaster risk reduction. PubDate: 2023-09-30 DOI: 10.15243/jdmlm.2023.111.5073 Issue No:Vol. 11, No. 1 (2023)
Authors:Saparudin Saparudin, Sofia W Alisjahbana, Rajiman Rajiman, Ilyas Sadad, Muhammad Amin, Yusup Hendronursito Pages: 5085 - 5094 Abstract: One method that can be used to improve soil properties is the addition of geopolymer cement to the soil to become more stable. This study aimed to determine the effect of geopolymer cement on soil stability. The raw materials for geopolymer cement include clay and basalt rock, with variations in the composition of 0%, 20%, 30%, 40%, and 50%. The levels of temperature variance used were 40 oC, 60 oC, and 80 oC, with variations in 4 and 6 hours. Characterization includes X-ray fluorescence (XRF), X-ray diffraction (XRD), and scanning electron microscope (SEM) tests of raw materials and products. The highest compressive strength was obtained on a mixture of 40% basalt, 200 mesh, and a heating temperature of 80 °C for 6 hours, 56.32 MPa. The California Bearing Ratio (CBR) test showed a significant increase in the heat treatment geopolymer products. The CBR value on y1 during the 10x collision was 16.67%; in the 30x crash, it increased to 63.33%, while in the 65x collision, it increased to 78.33%. Whereas in the Y2 measurement, at 10x collisions, it was 21.11%; at 30x collisions, the CBR value increased to 82.22%; and at 65x collisions, the CBR value increased to 100.00%. PubDate: 2023-09-30 DOI: 10.15243/jdmlm.2023.111.5085 Issue No:Vol. 11, No. 1 (2023)
Authors:Agnes Quartina Pudjiastuti, David Kaluge, Widowati Widowati Pages: 5095 - 5103 Abstract: The study, which aimed to analyze the use of chemical fertilizers and pesticides using the Cobb-Douglas production function approach and their reallocation to increase the income of vegetable farmers and prevent land degradation, was conducted in Sumberejo Village, Batu City, Indonesia. Data were collected from 138 pakcoy (Brassica rapa), celery (Apium graveolens), and red chili (Capsicum annuum) farmers through interviews using a questionnaire. The relationship between input and output was analyzed by regression with the Cobb-Douglas production function. Data validity, reliability, and classical assumption tests were performed to ensure the goodness of fit regression model. Furthermore, the F test and t-test were applied to analyze production response to chemical fertilizers and pesticides. This study revealed that the modeled regression equation is appropriate, where R2 = 0.827-0.933. Vegetable production gives a different response to the use of chemical fertilizers (TSP, Urea, and NPK) and pesticides. Increasing this chemical in pakcoy and celery farming is possible, but it needs to be considered because it has no significant effect on increasing production. The productivity of these two types of plants is relatively high. Farmers need to compare the costs of adding these inputs to additional income and the possibility of land degradation. Chemical fertilizers and pesticides have been excessive in red chili farming, so productivity is very low. There are indications that the land has been degraded, but to be sure, a study is needed on the chemical content of the vegetable fields in Sumberejo Village and the optimal use of chemical fertilizers and pesticides. PubDate: 2023-09-30 DOI: 10.15243/jdmlm.2023.111.5095 Issue No:Vol. 11, No. 1 (2023)
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