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Mulianda, Pratiwi
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Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Engineering

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PENGARUH VARIASI SUMBU PADA HIDROPONIK TERHADAP PERTUMBUHAN TANAMAN PAKCOY: PENGARUH VARIASI SUMBU PADA HIDROPONIK TERHADAP PERTUMBUHAN TANAMAN PAKCOY Winda P , Irencian; Mulianda, Pratiwi; Sriwulantari, Veronika; Adi S , Satria
Atech-i Vol. 2 No. 1 (2024): Tahun 2024
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55043/atech-i.v2i1.31

Abstract

Hidroponik adalah metode bercocok tanam tanpa tanah menggunakan nutrisi sebagai sumber makanan tanaman dengan media tanam sebagai penopang. Salah satu metode sederhana dan populer adalah sistem sumbu (wick system), yang cocok untuk pemula. Nutrisi disalurkan melalui sumbu menggunakan gaya kapiler secara pasif, dapat berfungsi dengan baik tanpa pompa air. Tujuan penelitian ini meliputi pembuatan instalasi hidroponik sistem sumbu, mengetahui daya kapilaritas variasi sumbu, dan mengamati variasi sumbu terhadap pertumbuhan pakcoy. Metode Pelaksanaan meliputi perancangan hidroponik sistem sumbu, penyiapan media tanam, penyemaian, pembuatan larutan nutrisi AB MIX, pindah tanam, dan pemeliharaan. Pengamatan mencakup daya serap air pada variasi sumbu, tinggi tanaman, jumlah daun, pH, dan EC. Tiga variasi sumbu diuji, yaitu kain flanel dan kain perca dengan lebar 1 cm, 2 cm, dan 3 cm. Hasil menunjukkan kain flanel lebih baik dibandingkan kain perca. Variasi terbaik untuk tinggi tanaman adalah kain flanel 3 cm dengan tinggi 26 cm, untuk jumlah daun adalah kain flanel 1 cm dengan jumlah 17,5 helai, dan berat tanaman adalah flanel 2 cm dengan berat 405,5 gram. Kesimpulannya, kain flanel lebih efektif sebagai sumbu pada hidroponik sistem sumbu (wick system).
Modification of Power Sprayer as a Pest Spraying Tool for Citrus Plants (Citrus sp.) Surya, Satria Adi; Mulianda, Pratiwi; Damanik, Annisa Purnamasari; Fitrada, Wathri; Rahmania, Syiffa
Journal of Agriculture Vol. 4 No. 02 (2025): Research Articles July 2025
Publisher : ITScience (Information Technology and Science)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47709/joa.v4i02.6784

Abstract

This study, titled “Modification of Power Sprayer into a Pest Spraying Tool for Citrus Plants (Citrus Sp),” was conducted in Gunuang Omeh Sub-district, Lima Puluh Kota Regency, from September to October 2024. The objective was to assess the efficiency of a power sprayer and the effectiveness of pest control on citrus plants. The research involved modifying the nozzle of the power sprayer and conducting field tests on a 20 x 20 meter plot. Observations included flow rate, insecticide output capacity, spray distribution, operator walking speed, theoretical field capacity, effective field capacity, spraying efficiency, wind speed, and operator power. In addition, the performance of the power sprayer was compared with that of a knapsack sprayer. Based on the results, the average flow rate was 0.008874 L/s; average droplet size from the power sprayer was 0.3611 mm; average operator walking speed was 0.0413 m/s; average theoretical field capacity was 0.076764 ha/h; average effective field capacity was 0.058789 ha/h; average wind speed was 1.22 km/h; and average operator power was 0.227 kW. The average spraying efficiency of the power sprayer and knapsack sprayer was 76.66% and 60.66%, respectively. These findings indicate that the power sprayer is more efficient than the knapsack sprayer, as it requires less time, less physical effort, and delivers a comparable spray output. Furthermore, the power required by the operator when using the power sprayer is lower than that of the knapsack sprayer.
Effect of Extraction Time on the Yield and Color Characteristics of White Pepper (Piper Nigrum L.) Oleoresin Damanik, Annisa Purnamasari; Surya, Satria Adi; Mulianda, Pratiwi
Journal of Agriculture Vol. 4 No. 02 (2025): Research Articles July 2025
Publisher : ITScience (Information Technology and Science)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47709/joa.v4i02.6793

Abstract

This study investigates the effect of extraction time on the yield and color characteristics of white pepper (Piper nigrum L.) oleoresin using the microwave-assisted extraction (MAE) method compared to conventional maceration. White pepper powder was extracted with 96% ethanol at four MAE durations (30, 60, 90, and 120 minutes) under a maximum controlled temperature of 50 °C, with maceration for 420 minutes as control. Results showed that MAE at 120 minutes produced the highest yield (10.370%), followed by 90 minutes (9.457%), 30 minutes (8.760%), and 60 minutes (8.323%). Conventional maceration yielded 8.610%, which was lower than MAE at 30 and 90 minutes, indicating higher efficiency of MAE even at shorter durations. Color analysis using CIELAB and RGB systems revealed that MAE at 90–120 minutes yielded brighter oleoresin (L > 56) compared to maceration (L = 53.33), while chromatic values (a and b) remained stable. Linear regression analysis showed a strong positive correlation between extraction time and yield (y = 0.1058x; R² = 0.8819), indicating that each additional minute increased yield by ~0.1058%. The findings suggest that MAE is a time-efficient method that enhances both yield and color quality of white pepper oleoresin, with optimal results obtained at 90–120 minutes.
Optimization of Drip Irrigation System to Improve Water Use Efficiency and Tomato Crop Productivity Mulianda, Pratiwi; Damanik, Annisa Purnamasari; Surya, Satria Adi
Journal of Agriculture Vol. 4 No. 02 (2025): Research Articles July 2025
Publisher : ITScience (Information Technology and Science)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47709/joa.v4i02.6810

Abstract

This literature review explores the optimization of drip irrigation systems to improve water use efficiency (WUE) and tomato crop productivity, particularly under dryland conditions. Four key studies were analyzed, focusing on hydraulic performance, integrated technologies, and agronomic outcomes. Sharu and Razak (2020) demonstrated that hydraulic modeling using EPANET achieved excellent water emission uniformity (CU and EU > 95%) with potential for energy savings through optimized pump power. Nurazila and Anggraini (2022) reported that drip irrigation significantly enhanced vegetative growth and WUE compared to manual irrigation. Suvitha et al. (2021) highlighted that drip fertigation with medium frequency and high NPK dosage maximized yield and WUE in sandy soils. Ramakrishna et al. (2024) found that combining drip irrigation with black plastic mulch resulted in the highest plant growth, fruit yield, and WUE by reducing evaporation. Collectively, the findings confirm that integrating supporting technologies—such as hydraulic modeling, fertigation, and mulching—can significantly enhance drip irrigation efficiency, conserve water, and improve tomato productivity, offering strong potential for adoption in water-limited agricultural regions.
Co-Authors Adi S , Satria Damanik, Annisa Purnamasari Rahmania, Syiffa Satria Adi Surya Sriwulantari, Veronika Wathri Fitrada Winda P , Irencian