Abstract:This study aimed to analyze the response of several cayenne pepper varieties (Capsicum frutescens L.) on the growth and yield of cayenne pepper cultivated in the cocoa (Theobroma cacao L.) alley cropping system. The research…
arch was conducted from April to July 2025 at Mon Jambe Village, Jeumpa District, and the Kopbun Suka Tani Sejahtera Business Research Center, Kota Juang District, Bireuen Regency. The experiment employed a Randomized Block Design (RBD) with four varieties as treatments and three replications, resulting in 12 experimental units. The tested varieties were Rajo, Genie, Bara, and Tetra Hijau. Data were collected through observations of plant height, number of leaves, number of fruits, fruit weight, and fresh biomass weight, and were analyzed using analysis of variance (ANOVA) to determine differences among treatments. The results showed that the varietal factor had a highly significant effect on leaf number and a significant effect on fruit number and fruit weight. The Bara variety exhibited the most adaptive and productive performance under the cocoa alley cropping system, as indicated by superior vegetative growth and yield compared to other varieties. The novelty of this study lies in emphasizing that varietal selection is a key factor in optimizing the utilization of cocoa alley spaces for cayenne pepper cultivation. These findings are expected to provide a scientific basis for developing cayenne pepper cultivation technologies in cocoa alley systems and to serve as a reference for further research on adaptive variety development under such environmental conditions.
Abstract:This study investigates the stress concentration factor in an infinite steel plate with a thickness of 1 cm, containing an elliptical hole, subjected to biaxial loading at infinity. The elliptical hole has semi-axes a=5.0 cma…
0 cma = 5.0 \, \text{cm}a = 5.0 cm (major axis) and b=2.5 cmb = 2.5 \, \text{cm}b = 2.5 cm (minor axis). The applied stresses at infinity are a tensile stress of σ1=100 kg/cm2\sigma_1 = 100 \, \text{kg/cm}^2= 100 kg/parallel to the major axis and a compressive stress of σ2=−100 kg/cm2\sigma_2 = -100 \, \text{kg/cm}^2= -100 kg/ perpendicular to the major axis. The material properties include Young's modulus E=2.1×106 kg/cm2E = 2.1 \times 10^6 \, \text{kg/cm}^2E = 2,1. kg/ and Poisson's ratioν=0.3\nu = 0.3 = 0.3. Using analytical solutions from classical elasticity theory, the maximum tangential stress at the edge of the ellipse is calculated as σmax=600 kg/cm2\sigma_{\text{max}} = 600 \, \text{kg/cm}^2= -600 kg/, yielding a stress concentration factor of kσ=σmax/σ=6k_\sigma = \sigma_{\text{max}} / \sigma = 6 = =6. Additionally, a finite element (FE) analysis based on the Salerno and Sahoni problem for a quarter section of the plate results in kσ=3.1125k_\sigma = 3.1125 = 3.1125 for a configuration with s/r=5s/r = 5s/r = 5, showing a discrepancy of 1.3% compared to the theoretical value of kσ=3.1k_\sigma = 3.1= 3.1 from Peterson's Stress Concentration Factors. The results demonstrate good agreement between the calculated model and theoretical predictions, validating the accuracy of the FE approach for stress concentration analysis in such configurations.
Abstract:The challenges posed by climate change and the decline of biodiversity to the sustainability of global agricultural systems are serious.Agroforestry has emerged as a strategy with the potential to enhance the resilience…
of agricultural systems while conserving biodiversity amidst the threats of climate change.This study aims to evaluate the potential of agroforestry to enhance biodiversity and the resilience of agricultural systems to climate change in Dulamayo, Gorontalo. The research methodology is based on vegetation analysis and the calculation of biodiversity indices, with data collection encompassing measurements of tree characteristics and species identification.The results indicate the presence of 17 tree species with a total of 154 individuals, where Candlenut (Aleurites molucana) and Sugar Palm (Arenga pinnata) dominate with proportions of 22.73% and 20.13%, respectively. The Shannon-Wiener diversity index yielded a moderate value (H' = 2.311) with a high evenness level (E = 0.816), indicating a high ecosystem stability.The findings suggest that the agroforestry system in Dulamayo plays a crucial role in supporting biodiversity and the resilience of ecosystems to climate change through its complex and diverse vegetation structure.
Abstract:Young learners’ English writing skill in EFL classroom setting is as essential to take into consideration as other English skills. For ensuring the progression-making, in term of monitoring the level of achievement, the…
e authentic assessment offers various advantages that should not be taken for granted. This study aimed at investigating, 1) the assessment practice in the classroom, 2) the effectiveness of authentic assessment practice for assessing writing skill, and 3) the challenges of the practice. This study was a descriptive case study. The population of the study encompassed 31 learners in grade-5 elementary school. The instruments used for collecting the data were field notes yielded from classroom observation, transcript interview, and related documents. The result of the study performed that (1) the teacher employs several types of assessment, yet authentic assessment is the most preferrable in the practice, (2) the authentic assessment practice in the classroom is effectively depicting learners’ actual competence, comprising real-world relevance, and encouraging evaluation, and (3) the teacher encounters the challenging experience in designing acceptable assessment for learners with diverse level of English competence and the sufficient time, as well. In summary, this study has torched a light on the practice of authentic assessment in originally realizing the function of assessment. The different school setting, teaching experiences, learners’ language proficiency skills, and classroom environment might bring about a distinct result.
Abstract:This research aims to determine the impact of water stress and the use of leaf compost on increasing yields and ideal plant development. This inspection was completed at the Medan City Food Security Center, jl . Selambo…
Ujung and Kramat are beautiful. between May and June 2023. The factorial randomized block design (RAK) used in this study consisted of two treatment factors symbolized by the symbol A at three levels, namely: A1) half KL (A2) 75% KL and (A3) 100 percent KL. The next factorial is with image P which consists of 3 levels, namely; (P1) is 1 g per liter of water, P2 is 2 g per liter, and P3 is 3 g per liter of water. With the aim of obtaining 9 drugs. Each treatment is repeated several times. The perception information is then investigated using the F test for changes at the 5% level. If the problem is large then proceed with the Duncan test. From the results of the examination and discussions carried out, results were obtained, including: 1). The influence of water pressure has a significant effect on plant height, number of leaves, leaf width, wet weight, and influences leaf length, leaf area and stem size of mustard greens (Brassica juncea L.). 2). Giving Gandasil D at a dose of 3 g/l of water basically increases the number of plants, number of leaves, leaf length, leaf width, stem size, new weight per plant, and selling weight. 3). The relationship between water stress treatment and use of leaf compost fundamentally affects plant height, number of leaves, leaf width, and wet load in mustard greens (Brassica juncea L.) while leaf length, leaf area and cross stem distance do not make a big difference.
Abstract:The research was conducted at the Food Security Office of Medan City Jl. Kramat Indah /Selambo Ujung . The purpose of this study was to determine the effect of Gandasil D fertilizer on the growth and yield of pakcoy (Brassica…
ssica rapa L), to determine the effect of watering frequency on the growth and yield of pakcoy (Brassica rapa L) and to determine the effect of both on the growth and yield of pakcoy (Brassica rapa L). Based on the results of the study, the treatment of Gandasil D fertilizer had a very significant effect on plant height, number of leaves, leaf area, wet weight, selling weight with a fertilizer concentration of 3 g / l water and a watering frequency of 1 time in one day compared to 1 time in 3 days of watering and the interaction between the treatment of Gandasil D fertilizer and watering frequency had a significant effect on plant height, number of leaves, leaf area, wet weight, and selling weight.
Abstract:This study expects to determine the impact of cow compost and urea manure to increase yields and ideal plant development. This exploration was completed at the Medan City Food Security Administration, Jl. Delightful Kramat/Selambo…
at/Selambo Ujung. From May to August 2023. This study utilized a factorial randomized bunch plan (RBD) which comprised of 2 treatment factors with the image S which comprised of 3 levels, in particular; ( S1) 1 kg/plot (S2) 2 kg/plot and (S3) 3 kg/plot. The subsequent factorial is the U image which consists of 3 levels to be specific; (U1) 30 g/plot (U2) 40 g/plot and (P3) 50 g/plot. With the goal that 9 medicines were obtained. Every treatment was rehashed multiple times. The perception information was then examined with the F trial of change at the 5% level, in the event that the thing that matters was huge, the test was gone on with the Duncan test. From the aftereffects of the examination and conversation completed, the accompanying ends were obtained: 1). The impact of cow fertilizer application affected plant level, number of leaves, number of blossoms, number of cases and unit weight of bean plants (Phaseolus vulgaris L.) 2). The impact of applying urea manure meaningfully affected plant level, significantly affected the quantity of leaves, fundamentally affected the quantity of blossoms and affected the quantity of cases and unit weight of bean plants (Phaseolus vulgaris L.) 3). The communication between the treatment of cow excrement and urea manure essentially affected plant level, number of blossoms, number of cases and unit weight, but not altogether unique on the quantity of leaves of bean plants (Phaseolus vulgaris L.)
Abstract:This research was conducted at the UPT Benih Induk Palawija located in North Sumatra, precisely at Jl. Pendidikan No. 23, Tanjung Selamat, Sunggal District, Deli Serdang Regency, the research was conducted in the period…
of June--September 2023. RAK or Randomized Block Design through factorial with two treatment factors was used as the method of this research. Three levels namely: D1 = 0 g / plot (0 kg / ha), D2 = 40 g / plot (270 kg / ha), D3 = 60 g / plot (400 kg / ha), the three of them became the first factor of dolomite (D) dosage which was grouped into three levels. In addition, N1 = 30 g / plot (200 kg / ha), N2 = 45 g / plot (300 kg / ha), N3 = 60 g / plot (400 kg / ha), the three of them became the second factor of NPK Mutiara fertilizer dosage which was divided into three levels. Dolomite application, 60 g/plot produces optimal yield and growth of peanut plants, namely the weight of 100 dry seeds, plant height, pod weight per plot, flowering age, pod weight per plant, number of branches, number of filled pods per plant, number of gynophores per plant, number of empty pods per plant, and total number of pods per plant are significantly affected by dolomite application. Meanwhile, application of NPK Mutiara fertilizer with a dose of 60 g/plot shows the same thing. The combination of dolomite and NPK Mutiara fertilizer only has a significant effect on the number of gynophores per plant.
Abstract:Keberlanjutan operasional sebuah camp bela diri sangat bergantung pada kualitas pengelolaan data anggota. Di BangRajan Muaythai Boxing, pencatatan kehadiran dan pemantauan sesi latihan masih bertumpu pada proses manual,…
yang kerap menghasilkan ketidakakuratan data serta membuka celah bagi peserta dengan paket habis untuk tetap berlatih tanpa terdeteksi. Penelitian ini merancang dan membangun sistem informasi manajemen member berbasis web sebagai solusi atas permasalahan tersebut. Pendekatan pengembangan dilakukan secara bertahap dengan pemodelan UML meliputi Activity Diagram, Use Case Diagram, Sequence Diagram, dan Entity Relationship Diagram. Stack teknologi yang digunakan mencakup Next.js pada sisi klien, NestJS pada sisi server, PostgreSQL sebagai basis data relasional, serta Better Auth untuk manajemen autentikasi. Sistem yang dihasilkan mengintegrasikan fitur absensi cerdas berbasis barcode, pengelolaan paket latihan, dashboard personal bagi member, panel administrasi lengkap, notifikasi kadaluarsa paket, dan manajemen pengumuman camp. Validasi dilakukan melalui Black Box Testing dengan empat skenario pengujian, seluruhnya menghasilkan keluaran yang sesuai ekspektasi. Penerapan sistem ini terbukti meningkatkan efisiensi operasional dan akurasi pencatatan data secara signifikan.
The operational sustainability of a martial arts camp depends greatly on the quality of member data management. At BangRajan Muaythai Boxing, attendance recording and session monitoring still rely on manual processes, which frequently lead to data inaccuracies and allow members with expired packages to continue training undetected. This study designs and develops a web-based member management information system to address these issues. The development follows a phased approach employing UML modeling including Activity Diagrams, Use Case Diagrams, Sequence Diagrams, and Entity Relationship Diagrams. The technology stack consists of Next.js on the client side, NestJS on the server side, PostgreSQL as the relational database, and Better Auth for authentication management. The resulting system integrates barcode-based smart attendance, training package management, a personal member dashboard, a comprehensive admin panel, package expiry notifications, and camp announcement management. Validation was conducted using Black Box Testing across four test scenarios, all yielding expected outputs. Implementation of this system demonstrably improves operational efficiency and data recording accuracy.