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Jurnal Keteknikan Pertanian Tropis dan Biosistem
Published by Universitas Brawijaya
ISSN : -     EISSN : 2656243X     DOI : https://doi.org/10.21776/ub.jkptb
Core Subject : Science, Agriculture, Engineering,
Agriculture, Biological Sciences & Forestry Control & Systems Engineering Electrical & Electronics Engineering Energy Mechanical Engineering
Jurnal Keteknikan Pertanian Tropis dan Biosistem (JKPTB) (ISSN: 2656-243X) has published the state-of-art articles which focus on both fundamental studies and applied engineering including Power and Agricultural Machinery, Mechatronics and Agro-industrial Machinery, Food and Post-Harvest Technology and Soil and Water Engineering. By providing an update issue and current topic in agricultural technology field, JKPTB becomes the reference for many scientist and stakeholders who work on Agricultural Engineering
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 10 Documents
 1 
Search results for , issue "Vol. 13 No. 3 (2025): December 2025" : 10 Documents clear
Analysis of Land Suitability for Superior Commodities in Nagari Lawang, Matur District, Agam Regency: Analisis Kesesuaian Lahan untuk Komoditas Unggulan di Nagari Lawang, Kecamatan Matur, Kabupaten Agam Nurdiyanto, Muhammad Rizki Dhani; Yanti, Delvi; Irsyad, Fadli; Stiyanto, Eri
Journal of Tropical Agricultural Engineering and Biosystems - Jurnal Keteknikan Pertanian Tropis dan Biosistem Vol. 13 No. 3 (2025): December 2025
Publisher : Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/

Abstract

This research has been carried out to identify areas that were suitable for planting superior crops in Nagari Lawang, Matur District, Agam Regency. This research was conducted using the matching method and then was continued with scoring of the slope, rainfall, C-Organic, soil pH, and soil texture parameters. The obtained values ??were used to determine the classification of land suitability for sugar cane, corn, peanuts and shallots. Land with the potential for planting sugar cane, corn, peanuts, and shallots is land in the very suitable (S1) and suitable (S2) suitability classes. Several commodities can be planted on a piece of land depending on the suitability of the characteristics of the land to the conditions for growing plants. The results of the analysis show that the land in Nagari Lawang that is suitable for planting sugar cane is 380.23 ha (27.57%), corn is 380.23 ha (27.57%), peanuts is 362.57 ha (26.29%), and shallots is 380.23 ha (27.57%) of the total land area of ??Nagari Lawang. Nagari Lawang's land (2023) that has been planted (S1 and S2 classes) with sugar cane covers an area of ??184.26 ha, corn covers an area of ??2.6 ha, peanuts covers an area of ??2.09 ha, and shallots covers an area of ??0.12 ha. The potential for developing sugar cane is 195.97 ha, corn is 377.63 ha, peanuts is 360.48 ha and shallots is 380.11 ha, respectively.  
Application of Edible Coating Based on Oil Palm Derivatives with the Addition of Chitosan to the Quality of Salak Pondoh Fruit (Salacca edulis Reinw var.) Wonosobo during Storage: Aplikasi Edible Coating Berbasis Turunan Kelapa Sawit dengan Penambahan Kitosan Terhadap Mutu Buah Salak Pondoh (Salacca edulis Reinw var.) Wonosobo selama Penyimpanan Permana, Galih; Widyasanti, Asri; Handayani, Wiwik
Journal of Tropical Agricultural Engineering and Biosystems - Jurnal Keteknikan Pertanian Tropis dan Biosistem Vol. 13 No. 3 (2025): December 2025
Publisher : Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/

Abstract

This study evaluated the effectiveness of edible coating based on oil palm derivatives with the addition of chitosan in maintaining the quality of Pondoh Wonosobo salak fruit during storage. The edible coating is formulated from palm stearin esters (the result of a synthesis reaction) as well as chitosan, carrageenan, GMS, and Tween 80 additives. This study used a completely randomized design (CRD) with two treatments, namely control and coating, and data analysis using descriptive statistics in the form of averages and standard deviations presented in the form of quality change graphs. Salak was coated with a selective coating and/ , stored at room temperature for 12 days, with the observed parameters including weight loss, hardness, total dissolved solids, acidity, vitamin C, and moisture content. The results showed that edible coating was effective in suppressing quality degradation, characterized by lower weight loss (24.1% vs. 48.7% control). The coating treatment also showed a tendency to maintain hardness, total dissolved solids, vitamin C, and moisture content better than controls. This innovation has the potential to extend the shelf life of salak.
The Influence of Transplanter and Combine Harvester Use on Working Time, Labor Requirement, and Income in Organic Red Rice (Oryza rufipogon) Farming in Singojuruh District, Banyuwangi: Pengaruh Penggunaan Transplanter dan Combine Harvester Terhadap Waktu Kerja, Jumlah Tenaga Kerja, Serta Pendapatan Pada Usaha Tani Padi Merah (Oryza rufipogon) Organik Di Kecamatan Singojuruh, Banyuwangi Triardianto, Dimas; Rakhmadina, Casilda Aulia; Adhamatika, Adhima; Indraloka, Aldi Bahaduri
Journal of Tropical Agricultural Engineering and Biosystems - Jurnal Keteknikan Pertanian Tropis dan Biosistem Vol. 13 No. 3 (2025): December 2025
Publisher : Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/

Abstract

The Singojuruh District in Banyuwangi Regency plays a pivotal role in rice cultivation, characterized by a large agricultural area and the highest levels of rice production and productivity compared to other districts. Among the various rice farming practices, organic red rice cultivation has emerged as a promising alternative due to its growing market demand and favorable selling prices for farmers. However, its productivity and profitability remain suboptimal, primarily due to the limited use of agricultural machinery such as transplanters and combine harvesters. This study aims to examine the effects of mechanization—specifically the use of transplanters and combine harvesters—on working time, labor requirements, and farmers' income in organic red rice farming in the Singojuruh District. A survey method was employed, involving farmers as respondents to assess the relative conditions, distribution patterns, and inter-variable relationships. Furthermore, an independent sample t-test was conducted to compare the variables. The findings reveal that the application of transplanters and combine harvesters significantly reduces working time and labor requirements while simultaneously increasing farmers' income in organic red rice farming.
Analysis of the Application of Subsurface Drip Fertigation Installation on the Growth Response of Lettuce Plants (Lactuca sativa L.) Yuzanni, M Yusfan; Sumarsono, Joko; Abdullah, Sirajuddin Haji
Journal of Tropical Agricultural Engineering and Biosystems - Jurnal Keteknikan Pertanian Tropis dan Biosistem Vol. 13 No. 3 (2025): December 2025
Publisher : Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/

Abstract

Water resources are one of the important factors in the agricultural process. The availability of water in an area is strongly influenced by several factors such as climate, rainfall, regional topography, and land use change. Adoption of an effective and efficient irrigation system to support crop growth is needed. This study aims to design a subsurface drip fertigation system for lettuce crops and determine the response to cow urine fermentation fertilizer. The research method used is an experimental method with field experiments using subsurface drip fertigation. The research parameters were soil physical properties, emitter droplet uniformity, crop water requirements, soil wetting area, pressure head, storage water reduction, lettuce crop growth, and crop productivity. The results showed that the uniformity value of the emitter droplets before being applied to the field was 58.03%. At the same time, the emitter uniformity value after being applied to the area was 81.8%, which is classified as good and can be applied in the field to support the growth of lettuce crops. In addition, the wetting range and pressure values were 14.66 cm and 4.9 cm. The results of plant growth observations, such as the total leaf area of 60.5 cm, the average number of leaves of 5, and the crown width, which increased with the age of the plant, reached 9.8 cm. The fresh weight of the lettuce plants was 255 grams, and the average weight of the lettuce plants was 15.94 grams.
Perbandingan Kinerja Pemupukan Manual dan Mekanis terhadap Efisiensi Biaya dan Tenaga Kerja di Perkebunan Kelapa Sawit Renjani, Rengga Arnalis; Mulyadi, Dede; Ermansyah, Yogi Akbar; Sembiring, Ngesahken; Hermantoro, Hermantoro; Uktoro, Arief Ika; Purwoto, Harsunu
Journal of Tropical Agricultural Engineering and Biosystems - Jurnal Keteknikan Pertanian Tropis dan Biosistem Vol. 13 No. 3 (2025): December 2025
Publisher : Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/

Abstract

Pemupukan yang efisien penting untuk meningkatan produktivitas kelapa sawit. Namun pemupukan yang dilakukan secara manual menghadapi berbagai kendala, antara lain: biaya yang tinggi, ketidaktepatan dosis, dan distribusi pupuk yang tidak merata. Tujuan penelitian ini adalah menganalisis efisiensi pemupukan mekanis menggunakan fertilizer spreader dibandingkan menggunakan pemupukan manual ditinjau dari segi biaya operasional, penggunaan tenaga kerja, dan distribusi pupuk. Metode yang digunakan pada penelitian ini menggunakan pendekatan eksperimen lapangan dengan pendekatan komparatif antara dua metode pemupukan: secara manual menggunakan tenaga kerja (control) dan pemupukan mekanis menggunakan fertilizer spreader (perlakuan). Data disajikan dan dianalisis dalam bentuk grafis perbandingan biaya dan waktu aplikasi. Perkebunan sawit dengan areal datar, mengakibatkan traktor berjalan lebih cepat sehingga bukaan hopper harus lebih besar. Pada areal sawit bergelombang traktor berjalan lebih lambat, diperlukan flow control yang lebih kecil agar pupuk tidak berlebihan. Pemupukan manual membutuhkan 15–20 orang tenaga kerja per siklus, dengan output rata-rata 850 kg/hari atau 2.4 ha/hari. Selain itu, tenaga kerja tambahan dibutuhkan untuk proses pembagian pupuk ke lokasi tanam dengan output 2,500 kg/hari. Pemupukan mekanis hanya memerlukan 3 orang (1 operator traktor dan 2 helper), dengan kemampuan memupuk 25 ha/hari dalam waktu kerja 8 jam. Hasil penelitian menunjukkan bahwa pemupukan mekanis lebih efisien dengan penghematan biaya (selisih) sebesar Rp 57,429/ha/rotasi. Jika pemupukan dilakukan setahun dua kali maka penghematan total adalah Rp 110.966/Ha/tahun dibandingkan dengan pemupukan manual.
Proximate Analysis and Exponential Model of Activated Carbon from Durian (Durio zibethinus) Peel from South Lampung: Analisis Proksimat dan Model Exponensial Karbon Aktif dari Kulit Buah Durian (Durio zibethinus) Asal Lampung Selatan Pangestuti, Martasari Beti; Witoyo, Jatmiko Eko; Kurniawan, Randy Yusuf; Cavendish, Amedeo
Journal of Tropical Agricultural Engineering and Biosystems - Jurnal Keteknikan Pertanian Tropis dan Biosistem Vol. 13 No. 3 (2025): December 2025
Publisher : Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/

Abstract

Durian (Durio zibethinus) peel is a major agro-waste with high lignocellulosic content and functional groups, making it a promising precursor for activated carbon. This study synthesized and characterized activated carbon from South Lampung durian peel using potassium hydroxide (KOH) activation at 0 M, 1 M, and 2 M. Proximate analysis (moisture and ash content, volatile matter, fixed carbon) was conducted, and exponential regression models were developed to examine the effect of KOH concentration. Results showed significant effects (p < 0.05) of KOH on all parameters. Moisture decreased from 59.23±2.02% to 7.19±3.27%, ash from 6.29±0.31% to 1.45±0.52%, and volatile matter from 7.81±0.45% to 2.09±0.02%, while fixed carbon increased from 84.88±0.31% to 89.72±0.52%. All parameters followed exponential trends with high R² values, indicating strong model fit. These findings confirmed that KOH activation improves activated carbon quality, and exponential models provide predictive insight. Therefore, durian peel from South Lampung is promising for high-quality activated carbon production.
Exploring the Physicochemical Properties of Moringa oleifera Leaf Powder from Lampung Selatan, Indonesia: Eksplorasi Karakteristik Fisiko-Kimia Bubuk Daun Kelor Asal Lampung Selatan, Indonesia Witoyo, Jatmiko Eko; Afifah, Amalia; Saraswati, Ayu Rahayu; Ristianti, Wigi Putri; Sari, Yanti
Journal of Tropical Agricultural Engineering and Biosystems - Jurnal Keteknikan Pertanian Tropis dan Biosistem Vol. 13 No. 3 (2025): December 2025
Publisher : Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/

Abstract

Moringa oleifera leaves (MOL) are one of the food ingredients that have complete nutritional content at an affordable price. These leaves are found in several regions of Indonesia, including Lampung Selatan. However, a notable drawback of MOL is its limited shelf life, and it is commonly transformed into Moringa oleifera leaf powder (MOLP) to enhance longevity. This study aims to explore the physicochemical properties of MOLP from Lampung Selatan, which has not been widely examined. This approach used in this study was quantitative descriptive. The results showed that the MOLP from Lampung Selatan had showed  L* value of 59.36, a* value of -8.05, and b* value of 23.36. It additionally revealed 21.10% protein, 3.49% fat content, 0.73% ash content, 5.83% moisture content, 68.84% carbohydrate content, 6.87% crude fiber content, and 15.47% starch. These results indicate that the MOLP from Lampung Selatan had a green colour, high in protein and crude fiber content, and low in fat and starch content. Therefore, MOLP from Lampung Selatan exhibits encouraging potential as a functional food ingredient in the development of food products requiring a high protein and fiber content at an affordable price.
Kualitas Pascapanen Tomat pada Penyimpanan Dingin dan Beku Rahmawati, Rahmi; Mardika, Kori Rahma; Janati; Aulia, Adinda Fatin; Ramdhan, Mohamad; Aufar, Muhammad Raznan
Journal of Tropical Agricultural Engineering and Biosystems - Jurnal Keteknikan Pertanian Tropis dan Biosistem Vol. 13 No. 3 (2025): December 2025
Publisher : Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/

Abstract

Penelitian ini bertujuan untuk mengevaluasi pengaruh penyimpanan dingin (chiller) dan beku (freezer) serta pengemasan terhadap kualitas tomat sebagai salah satu komoditas hortikultura bernilai ekonomis tinggi. Penelitian dilakukan menggunakan rancangan faktorial dua arah tanpa ulangan, dengan faktor jenis kemasan (plastik PE dan kertas koran) serta suhu penyimpanan (0 °C dan 8-10 °C). Parameter mutu yang diamati meliputi warna, tekstur, kekerasan, dan susut bobot tomat selama 7 hari penyimpanan. Dalam hal ini, kekerasan diamati sebagai parameter mekanis spesifik (force to penetrate/compress), sedangkan tekstur mencakup karakteristik sensori yang lebih luas seperti kekenyalan dan integritas jaringan. Hasil pengamatan menunjukkan bahwa penyimpanan beku cenderung lebih efektif dalam mempertahankan kekerasan tomat dibandingkan penyimpanan dingin, meskipun berpotensi menyebabkan perubahan warna yang lebih drastis akibat kerusakan membran sel. Parameter tekstur secara umum juga lebih stabil pada kondisi beku, namun perubahan struktur jaringan setelah thawing tetap perlu diperhatikan. Sementara itu, susut bobot lebih besar terjadi pada penyimpanan chiller, terutama pada kemasan plastik PE, yang disebabkan oleh laju transpirasi dan penguapan air yang lebih tinggi. Analisis ANOVA menunjukkan bahwa suhu penyimpanan memberikan pengaruh signifikan terhadap parameter kekerasan (p < 0.05), namun tidak signifikan terhadap susut bobot maupun tekstur. Temuan ini menegaskan bahwa pemilihan metode dan kondisi penyimpanan yang tepat—termasuk suhu dan jenis bahan pengemas—sangat penting untuk mempertahankan mutu tomat selama penyimpanan pascapanen. Untuk mempertahankan mutu fisik tomat selama penyimpanan pascapanen, disarankan menggunakan metode penyimpanan beku (freezer) yang dikombinasikan dengan kemasan berbahan kertas koran. Kombinasi ini terbukti lebih efektif dalam menjaga kekerasan dan tekstur tomat hingga 7 hari, sekaligus meminimalkan susut bobot dibandingkan penyimpanan dingin (chiller) dengan plastik PE. Namun, perlu diperhatikan potensi perubahan warna akibat kerusakan pigmen selama proses pembekuan dan pencairan, sehingga produk sebaiknya segera dikonsumsi setelah thawing untuk menghindari penurunan kualitas visual.
Pendekatan Holistik dalam Pengelolaan Sumber Daya Air Pertanian Berkelanjutan Menggunakan Analisis Bibliometrik Hendra Andiananta Pradana; Effendi, Mokhtar; Mahmudi, Kaila Nur
Journal of Tropical Agricultural Engineering and Biosystems - Jurnal Keteknikan Pertanian Tropis dan Biosistem Vol. 13 No. 3 (2025): December 2025
Publisher : Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/

Abstract

Pengelolaan lingkungan yang berkelanjutan memiliki peran penting dalam menjaga keberfungsian dan kelestarian ekosistem serta penyediaan sumber daya alam bagi kehidupan manusia, seperti sumber daya air pertanian. Kajian ini dilakukan untuk mengetahui perkembangan dan merumuskan pola pengelolaan berkelanjutan secara holistik pada sumber daya air pada pertanian untuk tanaman pangan berdasarkan analisis bibliometrik dan pendekatan sistem. Kajian ini dilakukan menggunakan studi literatur sistematis dengan kata kunci pengelolaan sumber daya air pertanian, tanaman pangan, daya dukung lingkungan, dan sosial–ekonomi masyarakat pada basis data dan artikel yang diindeks oleh Scopus selama periode penerbitan 2015–2025. Selanjutnya, dilakukan analisis keterkaitan dan pembentukan cluster menggunakan VOSviewer, serta merumuskan rekomendasi pengelolaan sumber daya air pertanian berkelanjutan menggunakan pendekatan sistem – causal loop diagram (CLD). Terdapat empat cluster dari hasil pemetaan kata kunci dalam pola perkembangan dalam pengelolaan sumber daya air di dunia yaitu sistem (cluster 1), irigasi (cluster 2), pertanian (cluster 3), dan kebutuhan (cluster 4). Pengelolaan sumber daya air pertanian mengarah pada sistem irigasi dan pertanian presisi. Pendekatan holistik yang mencakup koneksi dan sinergi antara aspek lingkungan baik berupa dinamika neraca air dan peningkatan kinerja ekosistem pertanian, aspek sosial yaitu sistem kelembagaan dan institusi dalam pengaturan penggunaan air, serta aspek ekonomi mencakup transformasi teknologi dan pertanian presisi dalam mendukung produktivitas tanaman pangan.
Analysis of a Hybrid Rack-type Dryer Made of Polycarbonate for Drying Pisang Sale Lubis, Muhammad Iqbal Abdi; Nasution, Afrilia Maharani; Putri, Irriwad; Hasibuan, Halimatus Syahdia
Journal of Tropical Agricultural Engineering and Biosystems - Jurnal Keteknikan Pertanian Tropis dan Biosistem Vol. 13 No. 3 (2025): December 2025
Publisher : Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/

Abstract

The drying of bananas as raw material for banana chips still often uses traditional methods that depend on weather and contaminants, which often pose challenges in maintaining quality and production efficiency, especially in Pasaman Barat District. The objective of this study is to analyze a hybrid rack-type dryer made of polycarbonate as an alternative solution for banana chip processing. This study employed an experimental method with a randomized block design (RBD) with three treatment groups for drying energy sources, including: sunlight (P1), incandescent lamp (P2), and sunlight + incandescent lamp (P3). The data were analyzed using the ANOVA test (p<0.05). The parameters observed in this study were: drying time, moisture content, temperature, working capacity, drying rate, heat loss, energy required to evaporate water from the material, and drying energy efficiency. The use of incandescent lamps in banana chip drying was proven to be the most efficient and effective, with an average drying time of 9 hours (2 hours and 3 hours shorter than P3 and P1, respectively), a working capacity of 0.18 kg/hour, moisture content <40% (in accordance with SNI 01-4319-1996 standards), drying rate of 0.07 kg/hour, heat loss of 28.39 W, and energy required to evaporate the material's water content of 1,391.55 kJ. Meanwhile, the drying energy efficiency of P3 is 1.58 times and 1.64 times higher than P2 and P1, respectively, at 59.80%. Thus, this device is deemed suitable for use as a new, more effective and efficient method for drying banana chips.

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