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Jurnal Sains Teknologi dan Lingkungan (JSTL)
Published by Universitas Mataram
ISSN : 24770329     EISSN : 24770310     DOI : -
Core Subject : Health, Science, Agriculture,
Agriculture, Biological Sciences & Forestry Computer Science & IT Public Health
Jurnal Sains Teknologi dan Lingkungan (JSTL), merupakan media untuk publikasi tulisan asli yang berkaitan dengan sains teknologi dan lingkungan baik dalam Bahasa Indonesia maupun Bahasa Inggris. Jurnal Sains Teknologi dan Lingkungan (JSTL) merupakan jurnal ilmiah terbitan berkala dua kali setahun (Juni dan Desember).
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Articles 335 Documents
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Analisis Arahan Penggunaan Lahan berdasarkan Kelas Kemampuan Lahan di Daerah Aliran Sungai Kelep Lombok: Analysis of Land Use Direction based on Land Capability Class in the Kelep Watershed, Lombok Endah Herlina; Hayati Hayati; Muktasam Muktasam
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 9 No. 3 (2023): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v9i3.464

Abstract

Conversion of forest land into agricultural land is a serious concern in the Kelep watershed. Agricultural methods applied without proper application of soil preservation and agrotechnology have resulted in significant erosion and reduced land productivity. Efforts to manage the Kelep watershed must be carried out by combining the interests of soil and water conservation with increase in agricultural production. The first step is to evaluate the capability of the land in this area. The aim of this study is to formulate a direction for land use for sustainable corn-based agriculture according to its capability class in the Kelep watershed. The results showed that the Kelep watershed was dominated by land with class IV 5,335.3 ha (48.02%) and VI 3,493.04 ha (30.95%) and III 1,813.71 ha (16. 32%) with the inhibiting factors for all land capability classes being the sensitivity of soil erosion (low-medium-rather high), slopes (wavy-wavy-slightly steep), and erosion damage (medium-rather heavy and heavy). Land with ability classes II, III and IV, can be utilized for the cultivation of Corn Plants (Zea Mays), accompanied by the application of agrotechnology and proper soil and water conservation so that it is sustainable, while land in class VI is not suitable for Corn cultivation, preferably for vegetation. permanent or forest in combination with the development of understorey plants with agroforestry patterns.
Analisis Column Settling Air Permukaan yang Dikoagulasi dengan Biokoagulan Biji Pepaya: Analysis of Column Settling Surface of Water Coagulated with Biocoagulant Papaya Seed Lita Darmayanti; Hamdani Hamdani; Shinta Elystia
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 9 No. 4 (2023): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v9i4.468

Abstract

Water of river has high turbidity so it needs to be treated before being used as clean water. Common processing is coagulation, flocculation, sedimentation, and filtration. Type II sedimentation is the settling of flokulen particles, where there is an interparticle interaction so that the size increases and the rate of settling increases. This study aims to analyze the settling column in order to get isoremoval graphs of river water that have been coagulated using papaya seed biocoagulants. Isoremoval graph is useful for determining the value of surface loading rate (Vo) and time of detention (td) making it easier to design sedimentation tank. The study was conducted using a settling column with a diameter of 12.5 cm with a height of 150 cm. The operating conditions varied are sampling point depth of 25 cm, 50 cm, 75 cm, 100 cm and 125 cm with sampling time per port 10 minutes, 20 minutes, 30 minutes, 45 minutes and 60 minutes. The results showed the best turbidity of the settling column was 88.81% at a column settling depth of 25 cm with settling time of 60 minutes. The surface loading rate obtained to produce 85% deposition is 55 m3day-1m-2 with a detention time of 40 minutes.
Distribusi Kadar Air Tanah Dengan Irigasi Curah Pada Budidaya Tanaman Stevia (Stevia rebaudiana B.): Distribution of Soil Water Content under Sprinkler Irrigation in Stevia (Stevia rebaudiana B.) Cultivation Achmad Malkan Mudzakir; Cahyoadi Bowo; Petrus Andianto
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 9 No. 4 (2023): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v9i4.469

Abstract

Sprinkler irrigation emulates rainfall patterns to supply plant water, improving soil conditions and ensuring sustained field performance. This study investigated the impact of sprinkler irrigation on Stevia's Coefficient of Uniformity (CU), soil moisture level, and crop coefficient (Kc). The experiment was conducted in Karangploso Village, Malang Regency, 700 m above sea level. Stevia plants were cultivated using sprinkler irrigation, and their water requirements were assessed by analyzing changes in soil moisture after irrigation. The results showed that sprinkler irrigation significantly increased soil moisture content. At a depth of 0-20 cm, soil moisture increased by an average of 0.135 cm3/cm3 (water depth of 27 mm), while at depths of 20-40 cm and 40-60 cm, the increase was 0.121 cm3/cm3 (24 mm) and 0.065 cm3/cm3 (13 mm), respectively, with a total water depth of 64 mm for 0-60 cm soil depth of 70 mm irrigation event. The crop coefficient (Kc) of Stevia varied during its growth stage, starting from 0.55 in the first week and gradually increasing to 0.57 in the 6th week. The total water requirement for Stevia until harvest at 60 days reached 279.8 mm. This finding emphasize the importance of monitoring and adjusting irrigation practices to ensure optimal growth of Stevia. Sprinkler irrigation effectively increased soil moisture content and determined the appropriate water requirement and Kc value for Stevia cultivation.
Efektivitas Pupuk Hayati Bactoplus dalam Meningkatkan Efisiensi Pemupukan NPK pada Tanaman Kentang (Solanum tuberosum L.) Varietas Chitra: Effectiveness of Bactoplus Biofertilizer in Increasing the Efficiency of NPK Fertilizer on Potato Plant (Solanum tuberosum L.) Chitra Variety Nurhidayati Nurhidayati; Aluh Nikmatullah; Hery Haryanto
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 9 No. 3 (2023): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v9i3.472

Abstract

This study was undertaken to examine the effectiveness of Bactoplus biofertilizer in increasing the efficiency of NPK fertilization on potato of Chitra variety. The experiment used a two-factor factorial randomized block design, namely: doses of NPK fertilizer (N1= 650 kg ha-1 /100% of the recommendation; N2= 487.5 kg ha-1/75% of the recommendation; and N3= 325 kg ha-1/50% of the recommendation) and Bactoplus biofertilizer (H0 = without Bactoplus biofertilizer and H1 = with Bactoplus biofertilizer). The results showed that the biofertilizer Bactoplus was effective in increasing the efficiency of NPK fertilizer, particularly to plant height at 3 weeks after planting (MST) and number of leaves at 7 MST. At the same dosages of NPK fertilizer, application of biofertilizer increased the plant height at 3 MST and the number of leaves at 7 MST, The best growth was achieved when the plants was treated with 75% of NPK in combination with Bactoplus application. The effect of each factor showed that application of Bactoplus biofertilizer increased growth, yield and quality of potato tubers. In adition, the dose of NPK fertilizer affected the growth of potato plants but did not affect the yield and quality of potato tubers.
Pengaruh Pemberian Biochar Terhadap Perubahan Sifat Kimia Tanah Vertisol dan Pertumbuhan Kacang Hijau (Vigna radiata L.): The Impact of Biochar Application on Alterations in Chemical Properties of Vertisol Soil and the Growth of Mung Bean (Vigna radiata L.) Alvi Maydayana; Bambang Hari Kusumo; Lalu Arifin Aria Bakti; Rika Andriati Sukma Dewi
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 9 No. 4 (2023): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v9i4.478

Abstract

Vertisols are soils that have a high cation exchange capacity but tend to have a low organic matter content. Meanwhile, nutrients availability in vertisol tends to be low because these elements are bound by clay particles, so the nutrient availability is limited for plantsThe aim of this research is to investigate the influence of rice husk biochar and corn cob biochar application on the changes in chemical properties of Vertisol soil and the vegetative growth of mung bean (Vigna radiata L.). The study was conducted using a Randomized Complete Block Design (RCBD) with an experimental approach. There were 8 treatments repeated 6 times, resulting in a total of 48 experimental units. The rice husk biochar (P) treatments included the control without rice husk biochar (BSP0), rice husk biochar at a rate of 60 g/kg soil (150 tons/ha) + 2.5 kg soil (BSP1), rice husk biochar at a rate of 30 g/kg soil (75 tons/ha) + 2.5 kg soil (BSP2), and rice husk biochar at a rate of 15 g/kg soil (37.5 tons/ha) + 2.5 kg soil (BSP3). The corn cob biochar (J) treatments included the control without corn cob biochar (BTJ0), corn cob biochar at a rate of 60 g/kg soil (150 tons/ha) + 2.5 kg soil (BTJ1), corn cob biochar at a rate of 30 g/kg soil (75 tons/ha) + 2.5 kg soil (BTJ2), and corn cob biochar at a rate of 15 g/kg soil (37.5 tons/ha) + 2.5 kg soil (BTJ3). The research data were analyzed using Analysis of Variance (ANOVA) at a significance level of 5%. Significant differences between treatments were further analyzed using the Duncan's New Multiple Range Test (BNJ) at a significance level of 5%. The soil analysis was carried out at the Soil Physics and Soil Chemistry Laboratories, Faculty of Agriculture, Universitas Mataram. The results of the research showed that biochar application influenced the chemical properties of the soil (pH, Cation Exchange Capacity, Organic-C) and the growth of mung bean plants in Lombok's Vertisol soil. Biochar did not have a significant effect on the height of mung bean plants at 7 and 14 days after planting (DAP), but it had a significant effect at 21, 28, and 35 DAP. However, the application of biochar did not significantly affect the number of leaves and dry weight of mung bean plants.  
Uji Kombinasi Pupuk Anorganik Dan Pupuk Bio-Organik P Terhadap Ketersediaan P Dalam Tanah, Serapan P Tanaman, Dan Populasi Bakteri Pelarut Fosfat Pada Tanaman Kedelai (Glycine Max L. Merrill): Combination Test of Inorganic Fertilizer and Bio-Organic Fertilizer on P Availability in Soil, Plant P Absorption, and Population of Phosphate Solvent Bacteria in Soybean Plants (Glycine Max L. Merrill). Baiq Fitri Pebrianti R.P; Lolita Endang Susilowati; Zaenal Arifin; Mansur Mashum; Rika Andriati Sukma Dewi
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 9 No. 4 (2023): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v9i4.481

Abstract

The application of bio-organic P fertilizer alongside inorganic fertilizers plays a crucial role in increasing available phosphorus (P) for plants while also aiming to reduce and optimize the use of inorganic fertilizers. This combination is expected to enhance crop yields, balance nutrient availability, and improve soil structure. The objective of this research was to investigate the impact of the combination of inorganic and bio-organic P fertilizers on soil P availability, P uptake in soybean plants, and the population of Phosphate-Solubilizing Bacteria (PSB) during the vegetative phase. The research utilized an experimental approach with four treatments. Each treatment involved five randomly selected samples, resulting in a total of 20 experimental units. The study was conducted from March to July 2019 in paddy fields in Semoyang Village, Praya Timur Subdistrict, Central Lombok Regency. The treatments used were as follows: P1 (50% of the recommended inorganic fertilizer + 10 g of bio-organic P fertilizer per plant), P2 (75% of the recommended inorganic fertilizer + 10 g of bio-organic P fertilizer per plant), P3 (100% of the recommended inorganic fertilizer), and the control group (without any treatment). The parameters analyzed in this study were the available P content in the soil, soil pH, dry weight of biomass, P uptake in plants, and the population of Phosphate-Solubilizing Bacteria. The results demonstrated that the treatments involving the combination of inorganic and bio-organic P fertilizers showed improvements in all tested parameters compared to using only inorganic fertilizers. The soil pH ranged from 6.56 to 6.64, available soil P ranged from 13.2 to 17.33 ppm, dry weight of biomass ranged from 8.2 to 11.01 grams, P uptake in plants ranged from 10.69 to 16.76 mg per plant, and the population of PSB ranged from 1.14×106 cfu/g to 4.56×107 cfu/g.  
Pengaruh Biochar Terhadap Mobilitas Merkuri (Hg) Pada Percobaan Pencucian (Leaching) Tertutup: Effect of Biochar on Mercury (Hg) Mobility in a Closed Leaching Experiment Baiq Eliza Prizma Mahardhika; Sukartono Sukartono; I Gusti Made Kusnarta; Suwardji Suwardji; Fahrudin Fahrudin
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 9 No. 3 (2023): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v9i3.485

Abstract

This study aims to determine the effect of biochar application on Hg mobility in a closed leaching experiment using gold processing tailings contaminated soil. The factorial experiment was set up using a Completely Randomized Design (RBD) which tested three types of biochar (rice husk biochar, coconut shell, and corncob biochar) and three doses of biochar (0.10 tons ha-1 and 15 tons ha-1). The PVC column containing a mixture of polluted soil and dibiochar was washed four times with deionized water for a total of 1090 ml of watering. The results showed that the application of biochar can reduce the mobility of mercury (Hg) in small scale gold processing tailings polluted soils. The dissolved Hg concentration in the leachate decreased with increasing dose of biochar application. Leachate from corn cob biochar (15 tons ha-1) treatment showed the lowest Hg concentration of 0.0012 ppm but was not significantly different from leachate from the soil column that was applied coconut shell and rice husk biochar. The concentration of Hg in the leachate for all biochar treatments ranged from 0.0012 - 0.0062 ppm, significantly different from the leachate concentration of the soil column without biochar, which was 1.62 ppm. This provides an indication that biochar can reduce the leaching rate, so that the concentration of Hg is not much leached into the soil. Therefore, biochar can be used as a soil enhancer in remediation of mercury (Hg) polluted soil so that it can slow down the mobility of mercury (Hg) so that it has a small impact on the environment.
Hipoparatiroid: Deteksi Awal dan Cara Penegakan Diagnosis: Hypoparathyroidism: Early Detection and Diagnosis Approaches Rizqina Alya Shafa; Dewa Ayu Vania Novista Anjani; I Komang Gede Andhika Wibisana; Nasyada Fadhila Rahmadini; Pratiwi Anggraini; Raditya Bayu Farizil Akhyar; Reny Apriyani; Sicillia Putri Atari; Yoga Pamungkas Susani
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 9 No. 4 (2023): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v9i4.487

Abstract

Hypoparathyroidism is an endocrine disorder characterized by low or even absent production of parathyroid hormone (PTH). The most common cause of hypoparathyroidism is injury to the parathyroid gland or accidental removal during thyroid surgery. The diagnosis of hypoparathyroidism is made by assessing clinical symptoms, physical examination and laboratory tests. The author wants to know more about how to detect early and diagnose hypoparathyroidism. Hypoparathyroidism is an endocrine disorder characterized by low or absent production of parathyroid hormone (PTH). The most common cause of hypoparathyroidism is injury to the parathyroid glands or unintentional removal during thyroid surgery. The diagnosis of hypoparathyroidism is established through the assessment of clinical symptoms, physical examination, and laboratory tests. The author aims to explore further the early detection and diagnostic approaches for hypoparathyroidism.
Analisis Optimasi Aplikasi Sistem Irigasi Tetes PVC Ber-Amiter pada Variasi Lahan Bertingkat Untuk Mendukung Kegiatan Pertanian di Permukiman Perkotaan: Optimization Analysis of the Application of Emitter PVC Drip Irrigation Systems on Variations of Multistorey Land to Support Agricultural Activities in Urban Settlements I Dewa Gede Jaya Negara; Lilik Hanifah; Anid Supriyadi; Eko Pradjoko; Atas Pracoyo
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 9 No. 3 (2023): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v9i3.490

Abstract

Multilevel drip irrigation with PVC pipes is an efficient irrigation method that has the potential to be applied in urban settlements. Even though the land used is not very large, farming can be done effectively because it uses polybag land. This study aims to determine the effect of variations in PVC pipe drip irrigation networks with amiter on irrigation distribution, irrigation uniformity, and soil moisture levels with variations in irrigation duration. The test was carried out on four variations of tower water level and four variations of PVC drip irrigation networks in a multi-level system, with four variations of irrigation duration t1=5 minutes, t2=10 minutes, t3=15 minutes and t4=20 minutes. The test data analyzed includes irrigation distribution data and irrigation uniformity (Cu) and soil moisture recharge (Wt). The analysis results show that the best distribution of drip irrigation is obtained in network variation 3 with an average of 69 ml. The average uniformity obtained for Cu is above 97%, which is considered very good. Soil moisture Wt in variation 3 drip irrigation networks for a depth of 20 cm ranges from 0.69% - 21.65% at L1, at L2 around 2.16% - 21.65%, at L3 is 2.19% -21.68 % and at L4 it is 10.41% - 28.66%, so the higher the level position, the greater the soil moisture addition provided by irrigation.
Pemanfaatan Biochar dan Respon Pertumbuhan Tanaman Sawi Hijau (Brasicca juncea L) pada Tanah Tercemar Merkuri (Hg): Utilization of Biochar and Growth Response of Green Mustard Plant (Brasicca juncea L) on Mercury (Hg) Polluted Soil Rohmaniati, Baiq Siti; Sukartono, Sukartono; Fahrudin, Fahrudin; Kusnarta, I Gusti Made; Susilowati, Lolita Endang
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 9 No. 3 (2023): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v9i3.491

Abstract

This study aims to determine the potential of biochar on the mobility of mercury (Hg) in polluted soil planted with mustard greens (Brasicca juncea) and to determine the growth response of mustard greens (Brasicca juncea) in absorbing mercury (Hg). This study used the experimental method, which is a method that aims to examine the effect of biochar application at various doses on the mobility of mercury using the indicator plant mustard greens (Brasicca juncea L) in mercury (Hg) polluted soil. This experiment was carried out from March to June 2023 in the Greenhouse of the Faculty of Agriculture, University of Mataram. Soil samples were collected in Pelangan Village, Sekotong District, West Lombok Regency at several points near the gold processing unit. The samples were taken at top soil of 30 cm with a distance of 100 cm from the processing site then composited. Soilschemical properties including concentration of Hg before and after experiments were measured. Agronomic variables include fresh and dry weight of roots, total dry weight of and concentration of Hg) in plant tissue were also measured. The results of the study showed that the application of rice biochar reduced mobility of Hg in soils. The concentration of extractable-Hg in biochar-treated soils were lower compared to control. This is likely related to the potential adsorption of a number of IHg and MeHg by the negative surface of the biochar and also the formation of association of Hg bonds with the functional groups of the biochar. However, this needs further confirmation.

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