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Penilaian Kualitas Tanah Menggunakan Indeks Kualitas Tanah (Soil Quality Index/SQI) di Sekitar TPA Sukawinatan dan TPA Indralaya, Sumatera Selatan
No full textInadequate solid waste management contributes to soil degradation through increasing acidity, declining organic matter, heavy-metal accumulation, and disruption of soil microbial activity. These impacts are commonly observed around landfill sites, especially in regions with high waste generation. This study aims to assess and compare the Soil Quality Index (SQI) of two landfill areas representing contrasting regional characteristics: Sukawinatan Landfill in Palembang City and Indralaya Landfill in Ogan Ilir Regency. Soil samples were collected at varying distances from the waste mound, and several soil quality parameters—organic matter, total nitrogen, pH, available phosphorus, and moisture content—were analysed. The SQI was calculated using a weighted integration method to provide an overall evaluation of soil health at each site. The results show that the Sukawinatan Landfill exhibits lower SQI values than the Indralaya Landfill, indicating more severe soil degradation due to greater waste volume and higher operational intensity. Increasing distance from the waste pile improved soil quality, although recovery patterns differed between locations. These findings highlight the need for improved waste-management practices and routine soil monitoring to prevent further environmental degradation. The study provides important insights for policy formulation related to landfill management, particularly in urban and peri-urban areas.
Key words : Indralaya, Palembang, soil quality, solid waste, Soil Quality IndexPengelolaan sampah padat yang tidak memadai berkontribusi terhadap degradasi tanah melalui peningkatan keasaman, penurunan bahan organik, akumulasi logam berat, dan gangguan aktivitas mikroba tanah. Dampak ini umumnya diamati di sekitar lokasi TPA, terutama di daerah dengan produksi sampah yang tinggi. Studi ini bertujuan untuk menilai dan membandingkan Indeks Kualitas Tanah (SQI) dari dua area TPA yang mewakili karakteristik regional yang berbeda: TPA Sukawinatan di Kota Palembang dan TPA Indralaya di Kabupaten Ogan Ilir. Sampel tanah dikumpulkan pada jarak yang bervariasi dari tumpukan sampah, dan beberapa parameter kualitas tanah—bahan organik, total nitrogen, pH, fosfor tersedia, dan kadar air—dianalisis. SQI dihitung menggunakan metode integrasi berbobot untuk memberikan evaluasi keseluruhan kesehatan tanah di setiap lokasi. Hasil menunjukkan bahwa TPA Sukawinatan menunjukkan nilai SQI yang lebih rendah daripada TPA Indralaya, yang mengindikasikan degradasi tanah yang lebih parah karena volume sampah yang lebih besar dan intensitas operasional yang lebih tinggi. Peningkatan jarak dari tumpukan sampah meningkatkan kualitas tanah, meskipun pola pemulihan berbeda antara lokasi. Temuan ini menyoroti perlunya peningkatan praktik pengelolaan limbah dan pemantauan tanah secara rutin untuk mencegah degradasi lingkungan lebih lanjut. Studi ini memberikan wawasan penting untuk perumusan kebijakan terkait pengelolaan tempat pembuangan sampah, khususnya di daerah perkotaan dan pinggiran kota
The Evaluation of Land Suitability for Arabica Coffee Cultivation (Coffea arabica L.) in Nagari Koto Gadang Guguk, Solok Regency, West Sumatra
No full textArabica coffee (Coffea arabica L.) is one of the high economic value plantation commodities, where the level of production is largely determined by land suitability. Scientific information related to specific land suitability in potential areas, such as Solok Regency, is still minimal. This research was conducted in Nagari Koto Gadang Guguk, Gunung Talang District, West Sumatra, with the aim of assessing the level of land suitability for Arabica coffee cultivation. The research was conducted from August to November 2024 through field surveys, laboratory analysis, and Geographic Information System (GIS)-based mapping at a scale of 1:50,000. Analysis included soil physical characteristics (texture, effective depth, drainage), chemical properties (pH, organic carbon, cation exchange capacity, base saturation), as well as topography and climate factors. Results showed that the study land was dominated by dusty loam to dusty clay textures with medium to high C-organic content (2.68-3.12%), slightly acidic pH (5.50-6.18), medium-high CEC values (21.53-32.54 cmol kg-¹), and base saturation of 42.53-68.23%. From the evaluation results, four land units (SL1-SL4) were categorized as S3 class (marginally suitable) with the main constraints of excess rainfall (2,817-3,000 mm/year) and slope (9-40%). Meanwhile, SL5 is categorized as class N (unsuitable) due to drainage problems. The potential to increase land suitability is still open through the application of soil and water conservation, terrace construction, use of adaptive varieties, and improvement of soil and water management. The overall results confirm the importance of land suitability evaluation as a foundation for sustainable Arabica coffee management in the tropical highland region.
Key words : Arabica coffee, land suitability, soil conservation, GISKopi Arabika (Coffea arabica L.) merupakan salah satu komoditas perkebunan bernilai ekonomi tinggi, di mana tingkat produksinya sangat ditentukan oleh kecocokan lahan. Informasi ilmiah terkait kelayakan lahan spesifik di wilayah potensial, seperti Kabupaten Solok, masih minim. Penelitian ini dilakukan di Nagari Koto Gadang Guguk, Kecamatan Gunung Talang, Sumatera Barat, dengan tujuan menilai tingkat kesesuaian lahan bagi budidaya kopi Arabika. Penelitian dilaksanakan pada Agustus hingga November 2024 melalui survei lapangan, analisis laboratorium, dan pemetaan berbasis Sistem Informasi Geografis (SIG) skala 1:50.000. Analisis mencakup karakteristik fisik tanah (tekstur, kedalaman efektif, drainase), sifat kimia (pH, karbon organik, kapasitas tukar kation, kejenuhan basa), serta faktor topografi dan iklim. Hasil menunjukkan bahwa lahan penelitian didominasi tekstur lempung berdebu hingga liat berdebu dengan C-organik sedang hingga tinggi (2,68–3,12%), pH agak masam (5,50–6,18), nilai KTK sedang–tinggi (21,53–32,54 cmol kg⁻¹), dan kejenuhan basa 42,53–68,23%. Dari hasil evaluasi, empat satuan lahan (SL1–SL4) dikategorikan kelas S3 (sesuai marginal) dengan kendala utama curah hujan berlebih (2.817–3.000 mm/tahun) dan kemiringan lereng (9–40%). Sementara itu, SL5 termasuk kelas N (tidak sesuai) karena masalah drainase. Potensi peningkatan kesesuaian lahan masih terbuka melalui penerapan konservasi tanah dan air, pembangunan terasering, penggunaan varietas adaptif, serta perbaikan sistem drainase. Keseluruhan hasil menegaskan pentingnya evaluasi kesesuaian lahan sebagai landasan dalam pengelolaan kopi Arabika berkelanjutan di wilayah dataran tinggi tropis.
Kata kunci: kopi Arabika, kesesuaian lahan, konservasi tanah, SI
Analisis Spasial Sifat Fisiko-Kimia Tanah pada Lahan Terdampak Erupsi Marapi di Nagari Lasi Kabupaten Agam
No full textThe physicochemical properties of soil play a crucial role in determining plant growth, development, and productivity. However, these properties are highly dynamic and can change due to management practices as well as natural phenomena such as volcanic eruptions. This study was aimed to analyze the physicochemical properties of soils under several land-use types (forest, coffee, chili, and rice fields) in Nagari Lasi following Marapi eruption on Dec 03, 2023. Undisturbed and disturbed soil samples were collected at depths of 0–30 cm and 30–60 cm. The results showed that, in general, there were no significant differences in either the physical or the chemical properties of soils across land-use types and soil depths. The soil texture in all land uses and depths was classified as sandy–silt loam, with a very low clay content (5–22%). The bulk density (BD) was <0.80 Mg m⁻³, total soil porosity (TSP) was moderate, and the hydraulic conductivity (HC) rate was high (20–31 cm h⁻¹), except in rice fields (5.34 cm h⁻¹). The plasticity index (PI) was low in both soil layers (2.21–5.31% at 0–30 cm and 5.63–7.21% at 30–60 cm). Soil chemical properties were also not significantly different among the land uses, particularly pH (5.12–5.86) and total N (0.13–0.41%) for both depths. However, the C/N ratio in the 0–30 cm layer tended to be lower than that in the 30–60 cm layer.Sifat fisiko-kimia tanah sangat menentukan tingkat pertumbuhan, perkembangan, dan produksi
tanaman. Akan tetapi, sifat fisika dan kimia tanah sangat dinamis, berubah akibat baik manajemen
yang diberikan maupun fenomena alam yang terjadi, seperti erupsi gunung api. Penelitian ini
bertujuan untuk menganalisis sifat fisika-kimia tanah beberapa penggunaan lahan (Hutan, Kopi,
Cabai, dan sawah) pasca erupsi di Nagari Lasi. Sampel tanah utuh dan terganggu diambil pada
kedalaman 0-30 cm dan 30-60 cm. Hasil analisis diperoleh bahwa, secara umum, tidak ada
perbedaan yang nyata antara sifat fisika dan kimia tanah pada perbedaan penggunaan lahan dan
kedalaman. Tekstur tanah pada setiap penggunaan lahan bahkan kedalaman termasuk kelas lempung
berpasir-berdebu, dengan percentase liat yang sangat rendah (5-22%). Akan tetapi, nilai BV tanah
<0,80 Mg m-3 dan TRP termasuk sedang, laju permeabilitas (20-31 cm j-1) termasuk tinggi kecuali
pada lahan sawah (5,34cm j-1, dan indeks plastisitas rendah baik pada lapisan 0-30 cm (2,21-5,31 %)
maupun 30-60 cm (5,63-7,21 %). Nilai sifat kimia tanah hampir sama, khususnya pH (5,12-5,86)
dan total-N (0,13-0,41%) untuk kedua lapisan tanah di setiap penggunaan lahan, sedangkan ratio C/N
tanah lapisan 0-30 cm cendrung lebih rendah dari lapisan 30-60 cm
Effect of NPK Bio-Organomineral Dosage on Growth and Yield of Rice Plants on Industrial Waste Polluted Land
Get PDFRice is a staple food in Indonesia and its production is crucial to meet the increasing demand. However, industrial pollution poses a threat to rice cultivation, particularly in the Rancaekek paddy fields. This study aimed to investigate the effect of NPK Bio-Organomineral fertilizer on the growth and yield of rice plants in industrially polluted land. The experiment was in September 2023-February 2024 and conducted in a greenhouse using Inpari 32 rice varieties. The research was set up in a randomized block design with eight treatments and four replications. The treatments consisted of: control (no fertilization), NPK 250 kg/ha, and NPK Bio-Organomineral treatment with doses of 125; 250; 375; 500; 625; 750 kg/ha. The results showed that the application of NPK Bio-Organomineral fertilizer increased the number of productive tillers, vegetative tillers, and grain dry weight. The optimal dose of NPK Bio-Organomineral fertilizer at a dose of 750 kg/ha showed the best results in increasing the number of vegetative tillers and productive tillers, while the dose of 375 kg/ha showed the best results economically in increasing the grain dry weight. This study shows that Bio-Organomineral NPK fertilizer can be an effective solution to improve soil fertility and increase rice yields on industrial waste polluted land
Soil chemical characteristics and phosphatase activity in soil of two mangosteen cultivation patterns in the mangosteen thematic village, District of pauh, Padang
Get PDFThis research discusses the critical role of phosphatase enzymes in soil, particularly in the phosphorus cycle and soil fertility. Acid and alkaline phosphatases are identified as crucial components, with their activities serving as indicators of soil fertility. This study evaluates the soil chemical and biological characteristics in mangosteen orchards in the Mangosteen Thematic Village, specifically in monoculture and polyculture cultivation patterns on slopes ranging from 8-15%. Soil pH, organic C, available P, total P, soil respiration, microbial C-biomass, and phosphatase enzyme activities were assessed at 0-20 cm and 20-40 cm depths. Total P did not show significant changes based on cultivation patterns. The results show that the soil pH values tend to be acidic to slightly acidic (5.21-
5.45) with no significant differences based on depth. Organic C, available P, soil respiration,
microbial C-biomass, and acid phosphatase enzyme activity were higher in polyculture cultivation patterns but alkaline phosphatase enzyme activity was higher in monoculture. The cultivation pattern influences the dynamics of agricultural ecosystems and should be considered in land management to enhance productivity and soil ecosystem balance
Subsiden, Emisi Karbon Dan Fisik Tanah Gambut Terbakar Dan Tidak Terbakar Di Areal Konservasi Gambut
Get PDFToday, peatland fires cause peat soil changes and release carbon emissions. The area protected as a peat conservation area in 2019 was not spared from fire incidents, where the land is an area with a maintained groundwater level and has monitoring data on groundwater level and peat thickness. This paper aimed to identify the subsidence, carbon emissions, and several physical properties of peat soil in burned and unburned peat conservation areas. The variables measured were hydraulic conductivity, subsidence, bulk density, water content, carbon content, and carbon emissions. The number of observation plots was 6 plots, with three (3) unburned plots and three (3) burned plots located in the Peat Conservation Area in Ketapang Regency, West Kalimantan. The six observation plots were in peatlands with the Typic Haplohemists subgroup, and shrub land cover. The results showed that the hydraulic conductivity and carbon content in unburned and burned land were not statistically and significantly different (P>0.05). The values of bulk density, water content, subsidence, and carbon emissions on burned land were significantly different (P<0.05) compared to unburned land. Subsidence in unburned locations was 1.83 ± 0.44 cm, while in burned areas it was 5.56 ± 0.84 cm. The amount of subsidence affects the amount of carbon emissions resulting from the loss of peat layers, namely on unburned land it was 9.24 ±3.13 tonnes/ha, and 35.53±3.73 tonnes/ha on burned land. The results of carbon emissions from subsidence caused by land fires can be determined as a basic emission factor for these two land conditions with similar peat characteristics. Keywords : Peat Fires, Peat Conservation Areas, Physical Properties of Peat, Subsidence, Carbon Emission
DINAMIKA pH TANAH BERPIRIT AKIBAT PERUBAHAN KONDISI AIR DAN APLIKASI AMELIORAN
Get PDFNaturally, during dry season, pyrite tent to be oxidized due to soil water content and groundwater level decrease. This paper aims to evaluate the influence of soil water condition and ameliorants on pyritic soil pH dynamics. Pyritic soil was taken from a depth of 70-90 cm below soil surface in the acid sulphate land located at Mulyasari Village, Tanjung Lago District, Banyuasin Regency, South Sumatra. The research was carried out in greenhouse with 2 treatment factors, namely: Water condition (K1 = water condition maintained at 5 cm above soil surface during incubation period and K2 = water condition at 5 cm above soil surface and allowed to decrease during incubation period) and ameliorant (T = Without Ameliorant, B = Organic Matter, D = Dolomite, P = Phosphate Fertilizer and S = Silicate Coal Ash). The results showed that pyritic soil pH tended to be stable during incubation period for K1 treatment, and pH of soil treated with dolomite > Silicate Coal Ash > Organic Matter > P Fertilizer > Without Ameliorant. Meanwhile for K2 treatment, soil pH tended to decrease with the highest rates are 21.58x10-2, 19.33x10-2, 4.38x10-2, 7.50x10-2, and 12.07x10-2 pH unit per day, respectively for without ameliorant, organic matter, dolomite, phosphate fertilizer and silicate coal ash. The highest rate of decrease in pH of pyritic soil occurred in the range of decreasing water content from 66.31 to 41.73% for without ameliorant, organic matter and phosphate fertilizer, from 41.73 to 13.93% for silicate coal ash, and from 13 .93 to 8.22 % for dolomite. These findings can be applied for managing pyritic soil by maintaining soil water content from falling under water content critical limit range and under uncontrolled dry conditions it is recommended to use lime to minimize pyrite oxidation
Evaluation of the Fertility Status of Rice Fields in Giri Jaya Village, Nagrak District, Sukabumi Regency
Get PDFRice field management plays a crucial role in successfully increasing rice production. This research aims to assess the fertility status of rice fields situated at varying altitudes in Giri Village, Nagrak District, Sukabumi Regency. The research comprises three stages, which include: Field research, Laboratory research, encompassing the analysis of soil chemical properties. Data analysis, conducted both descriptively and quantitatively. Composite soil samples from rice fields were collected at three different elevations (top, middle, and bottom) at a depth of 1-20 cm in the surface layer of the rice field soil. Analysis of paddy soil samples involved measuring pH H2O using the electrometric method, total N, and cation exchange capacity (CEC) using the titrimetric method, potential K2O using the flame photometric method, potential P2O5 and organic C using the spectrophotometric method, K-dd and Na-dd using the flame photometric method, and Ca-dd and Mg-dd using the AAS method. Data obtained from soil analysis at different elevations were compared based on soil type for each observed parameter. The research results indicate that the evaluation of nutrient status is influenced by altitude. Land situated at lower elevations exhibits better soil fertility status, followed by land at the upper and middle elevations. Keywords: Altitude, Andisols, Erosion, Rice fields, Soil fertility
PENDUGAAN EROSI TANAH PADA BERBAGAI PENGGUNAAN LAHAN DAN KEMIRINGAN LERENG DI KECAMATAN WONOSALAM, KABUPATEN JOMBANG
Get PDFIndonesia is a tropical country prone to land degradation, with erosion being one of the main causes. The damage and loss of hydrological and economic functions are consequences of erosion. Wonosalam Subdistrict, Jombang Regency, is an area located at the foot of Mt. Anjasmoro, ranging in elevation from 600 to 1200 meters above sea level (masl). Wonosalam Subdistrict excels in the plantation sector, particularly in Jombang Regency. The area's characteristics, marked by steep slopes and numerous dragon's back ridges, make it highly susceptible to erosion. Consequently, if land management does not adhere to soil and water conservation principles, a decline in soil function will adversely impact the key sector of plantations. This study employed a descriptive-exploratory method through field surveys and purposive sampling. Samples were taken at various slope levels, including gentle slopes (8-15%), moderately steep slopes (16-25%), and steep slopes (26-40%), across forest, plantation, dryland cultivation, and paddy fields. Erosion estimation utilized the Universal Soil Loss Equation (USLE) proposed by Wichsmeier and Smith (1978). The research findings indicate that the Land Unit with the highest actual erosion value is dryland cultivation with a slope of 25-40% or T1K3, with a value of 1238.44 tons/ha/year. In contrast, the lowest is Paddy Field 3 with a slope of 8-15% or Sw1K3 with a value of 0.16 tons/ha/year. Conservation guidelines are determined based on the Erosion Index (EI), prioritizing the scale to identify the lands that require immediate restoration. All dryland fall under Priority I in the conservation plan. Conservation directives involve both vegetative and mechanical methods, such as constructing bench terraces and planting crops suitable for the socio-economic conditions of the Wonosalam Subdistrict, such as coffee or durian
STATUS KESUBURAN TANAH PADA LAHAN PASANG SURUT DI DESA PUSAKA KECAMATAN TEBAS KABUPATEN SAMBAS
No full textThis study aims to determine the status of soil fertility and provide fertilization suggestions based on soil fertility status in four types of overflow in Pusaka Village, Tebas District, Sambas Regency. The method used in this research is a survey method. The research starts from November 18 2022 to December 5 2022 and until the presentation of the results. For each location, 5 sampling points were determined outside the reef and 5 sampling points outside the reef. The distance is 100 m between the 4 sample points at a depth of 0-30 cm. Composite soil samples are from 5 points on the citrus reef and outside the oranges so that the total number of soil samples taken is 8 samples. The results of the study showed Assessment of soil fertility status in Pusaka Village, Tebas District, Sambas Regency has low criteria. The available P nutrients in the soil at the study site were very high, so there was no need to apply P fertilization. The recommendations for fertilizing urea and KCl at the study site were A =171,52 kg/ha dan 295,73 kg/ha, lokasi B = 179,33 kg/ha dan 1.318,17 kg/ha, lokasi C = 168,72 kg/ha dan 215,67 kg/ha, lokasi D = 156,8 kg/h