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All Journal Jurnal Teknik Mesin Jurnal Keteknikan Pertanian Jurnal Pengkajian dan Pengembangan Teknologi Pertanian agriTECH Jurnal Ilmiah Rekayasa Pertanian dan Biosistem Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Rona Teknik Pertanian

Tineke Mandang

Dept Of Agricultural Engineering And Biosystems, Faculty Of Agric. Tech., Bogor Agricultural University, Bogor 16680, West Java, Indonesia.

Author-ID : 2869595

Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Control & Systems Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Desain Ergonomis Sistem Penggandengan Trailer pada Traktor Roda Dua Muhammad Dhafir; Tineke Mandang; Wawan Hermawan; Muhammad Faiz Syuaib
Jurnal Keteknikan Pertanian Vol. 7 No. 1 (2019): JURNAL KETEKNIKAN PERTANIAN
Publisher : PERTETA

AbstractThe existing hitch system which pulled trailer on the two-wheel tractor had disadvantages when turning it, the tractor handlebar moved away from operator control, consequently the handlebar position is already beyond the operator control range so the operator had to bend. For a larger radius turning, the operator had to descend from operator seat. The purpose of this study was to design an ergonomic trailer hitching system for Indonesian operator. Prototype tests carried out include performance and functional testing. The pivot type trailer hitching system was the most superiortype compare to the other concept. With the design of this system the operator's position is fixed to the handlebars of the two-wheeled tractor, both in straight and turn operations, so that theoperator can fully control the two-wheeled tractor along with all the control levers. The ideal dimension of the operator seat were seat height of 410 mm, backrest distance of 1700 mm, seat length of 320 mm, and seat width of 300 mm. Two-wheel tractor with pivot type trailer hitching system has a turning radius of 2.18 m - 2.82 m better than existing system of 3.72 m - 4.03 m.AbstrakSistem penggandengan konvensional untuk menarik trailer pada traktor roda dua memiliki kelemahan pada saat berbelok, stang traktor bergerak menjauh dari posisi kendali operator, akibatnya posisi stang sudahberada di luar kendali jangkauan operator sehingga operator harus membungkuk. Untuk belokan dengan sudut yang lebih besar operator harus turun dari tempat duduk operator untuk dapat mengendalikan traktor. Tujuan penelitian adalah untuk mendesain sistem penggandengan trailer yang ergonomis untuk operator Indonesia.Pengujian-pengujian prototipe yang dilakukan meliputi pengujian kinerja dan fungsional. Sistem penggandengan trailer tipe pivot merupakan yang paling unggul dibandingkan dengan konsep-konsep lainnya. Dengan desain sistem ini posisi operator adalah tetap terhadap alat-alat kendali traktor, baik dalam keadaan berjalan lurus maupun berbelok, sehingga operator dapat sepenuhnya mengendalikan traktor roda dua beserta semua tuastuas kendalinya. Dimensi-dimensi ideal tempat duduk operator (seat) adalah tinggi tempat duduk (Td) 410 mm, jarak sandaran duduk (Jd) 1700 mm, panjang tempat duduk (Pd) 320 mm, dan lebar tempat duduk (Ld) 300 mm. Traktor roda dua dengan sistem penggandengan tipe pivot memiliki radius putar 2.18 m – 2.82 m, lebih baik dibandingkan sistem konvensional yaitu 3.72 m – 4.03 m.

Pengaruh Pengolahan Tanah dan Penambahan Jerami terhadap Kebutuhan Air Penyiapan Lahan Padi Sawah Delvi Yanti; Tineke Mandang; Mohamad Yanuar Jawardi Purwanto; Mohamad Solahudin
Jurnal Keteknikan Pertanian Vol. 7 No. 3 (2019): JURNAL KETEKNIKAN PERTANIAN
Publisher : PERTETA

Praktik manajemen seperti pengolahan tanah, mulsa, aplikasi pupuk dan pemupukan dilakukan untuk meningkatkan lingkungan fisik tanah dengan tujuan akhir untuk meningkatkan produktivitas tanaman. Tujuan penelitian ini adalah untuk mengetahui pengaruh pengolahan tanah dan penambahan jerami terhadap kebutuhan air penyiapan lahan padi sawah. Penelitian terdiri dari dua faktor perlakuan, yaitu pengolahan tanah dan penambahan jerami yang masing-masing dilakukan 3 kali. Metode pengolahan tanah yaitu pembajakan-pelumpuran dilakukan dengan dua tahap atau ada jeda selama 15 hari (PT1) dan pembajakan-pelumpuran dilakukan dalam satu tahap kegiatan atau tanpa ada jeda (PT2), sedangkan untuk perlakukan jerami, ada yang tanpa jerami (J0) dan menggunakan jerami (J1). Pengamatan dilakukan terhadap sifat fisik tanah dengan cara pengambilan contoh tanah utuh sebelum pengolahan tanah (SPT) dan setelah tanah diolah, perhitungan terhadap kebutuhan air penyiapan lahan dilakukan untuk masing-masing perlakuan. Untuk mengethaui pengaruh perlakuan terhadap sifat fisik tanah dilakukan dengan analisis statistik yaitu degan paried sample t-test. Hasil percobaan yaitu pengolahan tanah dan penambahan jerami berpengaruh terhadap sifat fisik tanah. Pengolahan tanah dua tahap dan penambahan jerami merupakan perlakuan yang membutuhkan air paling banyak dalam penyiapan lahan yaitu sebesar 196,95 mm, tetapi merupakan perlakuan terbaik dengan air tersedia sebesar 16 %.

Traction Performance Analysis of Track Wheels Type on Wet and Deep Muddy of Soil in Soil Bin Muhammad Taufiq; Tineke Mandang; Wawan Hermawan; Desrial
Jurnal Keteknikan Pertanian Vol. 10 No. 3 (2022): Desember 2022
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.010.3.226-239

Hand tractors with lugged wheels have difficulty when operating in wet and deep mud of paddy fields. To solve this problem, the wheels need to be replaced with tracks wheel type that have a much larger contact area. Data on traction performance characteristics of the track wheel type on muddy soil are required for design purposes, which can be obtained by testing the prototype of track wheel type on a soil bin. The objective of this research is to analyze the traction performance of the lugged track of wheel type on wet soil. The track wheel type with a length of 60 cm and a width of 20 cm will be tested in a soil bin filled with wet and muddy soil with a depth of 30 cm. The test will be carried out on variations in vertical loads of 9.5, 12.5, 15.5, 18.5, and 22.7 kg; horizontal loads of 1, 2, 3, and 4 kg; distance between of lugs of 12.70, 19.05, and 25.40 cm; and height of lugs of 5, 10, and 15 cm. Parameters observed in the test are sinkage, slip and traction efficiency. The test results show that the pull force and vertical force have a dominant effect on track sinkage, track slip, and tractive efficiency. The optimum track wheel type design has size a lug height of 10 cm and a distance between lugs of 19.05 cm result in a sinkage of 7.32 cm, slip of 14%, and tractive efficiency of 68.46%.

Pengaruh Laju Umpan Bahan Bakar dan Laju Aliran Udara terhadap Kinerja Pembakaran Tungku Fixed Bed Tamaria Panggabean; Tineke Mandang; Leopold Oscar Nelwan; Wawan Hermawan
agriTECH Vol 43, No 1 (2023)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/agritech.70508

Penelitian ini dilatarbelakangi kelemahan pembakaran tungku yang menghasilkan pembakaran yang tidak sempurna dikarenakan kurang optimalnya rasio bahan bakar dan udara serta waktu tinggal pembakaran yang singkat. Penelitian ini bertujuan untuk memperoleh laju umpan bahan bakar dan laju aliran udara yang menghasilkan pembakaran sempurna. Makalah ini menjelaskan pengaruh laju umpan bahan bakar dan laju aliran udara terhadap kinerja pembakaran tungku fixed bed sebagai sumber energi panas pengering. Pengukuran efisiensi tungku dilakukan pada berbagai laju umpan sekam dan laju aliran udara. Penelitian ini dilakukan pada 3 laju umpan sekam yaitu 12, 15, dan 18 kg/jam, dan pada 5 laju aliran udara yaitu 86,4; 120,96; 114,84; 108 dan 154,8 kg/jam. Perlakuan optimum diperoleh pada laju umpan sekam 15 kg/jam dan laju aliran udara 114,84 kg/jam dengan efisiensi tungku sebesar 73,99%, panas yang dihasilkan 41,55 kW dan dan % abu/arang yang diproduksi 17,89%. Suhu gas buang bervariasi dari 99,78-474,23°C pada berbagai laju umpan sekam dan laju aliran udara. Analisis gas buang menunjukkan pelepasan panas maksimum terjadi ketika tungku diberi kelebihan udara berlebih 100% yang dibutuhkan untuk pembakaran sempurna.

A Penentuan Parameter Desain Mesin Perontok Sorgum Berdasarkan Karakteristik Fisik dan Mekanik Tanaman Sorgum: Identification of the Physical Characteristics of Sorghum Bioguma for the Design of a Sorghum Thresher Machine Ana Nurhasanah; Wawan Hermawan; Tineke Mandang; Astu Unadi; Maria TJB; Herry Susanto; Arif S; M Hidayat; Suparlan Suparlan; Anugerah Fitri Amalia; Teguh WW; Uning B; Ni Putu Dian Nitamiwati; Adji P
Jurnal Keteknikan Pertanian Vol. 11 No. 1 (2023): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.011.1.76-87

An effective and efficient threshing mechanism for sorghum plants requires information about technical properties, including the physical and mechanical properties of this sorghum plant. This study aims to determine some of the physical properties of the sorghum variety Bioguma in the seeds, stems, and leaves for the threshing mechanism of the sorghum seeds and stems. This study used a descriptive method with several repetitions from 3 to 30, depending on the measured parameters. All sampling was done randomly. The sorghum plants tested were from several fields in Majalengka and Bogor. The dimensions of the Bioguma variety of sorghum seeds, which have values ranging from 4.23 mm to 5.88 mm in width, 2.49 mm to 2.85 mm in thickness, and 3.95 mm to 4.98 mm in height, are considered in the design of threshing cylinder sieve sizes, namely using a perforated plate with a diameter of 6 mm; threshing power requirements with threshing cylinder speed on the designed threshing machine, assuming a threshing cylinder diameter of 51 cm and a rate of 700 rpm requires a power of 9.17 kW.

Analisa Pengaruh Posisi Biji pada Malai Terhadap Gaya Perontokan Beberapa Varietas Padi Ajat Zatmika; Tineke Mandang; Wawan Hermawan; I Dewa Made Subrata; Agus Sutejo
Jurnal Ilmiah Rekayasa Pertanian dan Biosistem Vol 11 No 2 (2023): Jurnal Ilmiah Rekayasa Pertanian dan Biosistem
Publisher : Fakultas Teknologi Pangan & Agroindustri (Fatepa) Universitas Mataram dan Perhimpunan Teknik Pertanian (PERTETA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jrpb.v11i2.547

Quantity and quality of rice grain can be developed through more efficient and accurate threshing methods based on the measurement of threshing force (TF). This study aimed to investigate the influence of rice varieties and grain position on the panicle on the threshing force (TF) results. Rice grains from several harvested varieties were dried to a moisture content level of 12% and prepared for threshing force (TF) testing. The research design used was a 2-factor completely randomized design with 3 replications. The first factor was rice varieties consisting of 4 levels: Sintanur, Siliwangi, Pajajaran, and Cakrabuana. The second factor was grain position on the panicle, consisting of 3 levels: upper, middle, and basal. Threshing force (TF) values were tested for 12 treatment combinations. The obtained data were analyzed using analysis of variance (ANOVA) followed by Duncan's multiple range test (DMRT) at a significance level of 5%. The results indicated that rice varieties had a highly significant effect on the threshing force (TF). On the other hand, grain position on the panicle had a non-significant effect on the threshing force (TF). The rice variety that produced the highest average threshing force (TF) value was Cakrabuana with 0.51 N, followed by Siliwangi with 0.50 N, Sintanur with 0.43 N, and Pajajaran with 0.35 N. The upper position of the grains on the rice panicle yielded the lowest average threshing force (TF) value of 0.41 N, compared to the middle position with 0.46 N and the basal position with 0.47 N.

Pemanfaatan Limbah Daun Kelapa Sawit sebagai Bahan Baku Pupuk Kompos Ramayanty Bulan; Tineke Mandang; Wawan Hermawan; Desrial Desrial
Rona Teknik Pertanian Vol 9, No 2 (2016): Volume 9, No. 2, Oktober 2016
Publisher : Department of Agricultural Engineering, Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17969/rtp.v9i2.5650

Abstrak. Limbah padat pada perkebunan kelapa sawit telah diketahui potensial sebagai bahan baku pupuk organik padat melalui proses pengomposan. Penelitian ini bertujuan mengembangkan teknik dan mengkarakterisasi proses pengomposan limbah daun kelapa sawit sebagai bahan dasar pupuk organik potensial. Proses pengomposan dilakukan dengan dua faktor perlakuan, meliputi komposisi bahan katalisator kompos (Bokashi, Vermikompos dan Natural) dan ukuran cacahan daun sawit (2 cm, 4 cm 6 cm). Parameter yang diamati meliputi persentase penyusutan massa dan fluktuasi perubahan suhu selama proses pengomposan, serta pengukuran zat hara Nitrogen, Phospor, Kalium (NPK) dan rasio C/N yang terkandung pada hasil pengomposan yang diukur setelah 10 dan 14 minggu proses pengomposan. Hasil penelitian menunjukkan bahwa metode pengomposan dengan bokashi memberikan penyusutan massa terbesar jika dibandingkan dua metode lainnya pada semua ukuran cacahan yaitu sebesar 32%. Cacahan daun sawit yang berukuran kecil cenderung memberikan proses pengomposan yang lebih cepat dan memberikan produk kompos yang lebih baik. Hasil pengukuran setelah proses pengomposan menunjukkan bahwa interaksi dua faktor perlakuan yang diberikan hanya berpengaruh signifikan pada rasio C/N dan tidak signifikan pada zat hara NPK. Utilization of Waste Palm Leaves as Raw Material Palm CompostAbstract. The use of oil palm plantation solid waste, particularly oil palm leaf as organic compost raw material are now receiving greater attention by researchers, but have not been fully utilized on large scale, either agriculturally or industrially. The aim of present study was to characterize composting process with oil palm leaf as raw material. The research of composting conducted with two combination of composting factor, namely: composting starter composition (i.e. Bokashi, vermi-compost and natural composting) and piece of frond dimension (2 cm, 4 cm, 6 cm). The percentage of mass reduction and temperature fluctuation during composting process were measured. The NPK compound and C/N ratio measurement were conducted after composting process which are 10 and 14 weeks. The result indicates that Bokashi starter composition gives higher percentage of mass reduction on all variant of piece of frond dimension. Results also showed that smaller piece of frond enable the composting process quicker and had better result. Statistical analysis reveals that combination of composting factors have significant effect on C/N ratio but insignificant on NPK.

Engineering of Information Monitoring System Sensor Reading Data Based on Smart Wireless using NVDIA Jetson Nano and Arduino Mega on Agricultural Spraying Machines Ridwan Siskandar; Tineke Mandang; Wawan Hermawan; Irzaman Irzaman
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 12, No 4 (2023): December 2023
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v12i4.921-936

The focus of the research is monitoring data from sensors on the agricultural sprayer. The monitoring system support by some sensors in camera, tank capacity, boom sprayer balance and battery capacity. The research method was carried out using the waterfall model, because according to the needs that require a sequential flow in the process. This model is divided into four parts, namely analysis (to identify problems and needs), design (plans to solve problems to be solved), implementation (implementation of plans that have been made), and testing. Engineering of Information Monitoring System Sensor Reading Data Based on Smart Wireless using NVDIA Jetson Nano and Arduino Uno on Agricultural Spraying Machines. The test results for the CNN model for the detection of the “Jajar Legowo” object were carried out to obtain 90% accuracy, 82.35% precision and 100% recall. Tests an accuracy value cappacity tank of 100%. Testing the balance sensor, if rotates clockwise on the Y axis the output voltage decreases, and vice versa. However, if the sensor at rest, the output voltage will same as the offset value. Besides that, testing the optimum PWM value fuzzy approach is carried out with aim that the droplets hit the target zone when sprayer is working. The result are Arduino IDE and Matlab produce same value, which is 42 for the optimum PWM value. Testing the battery capacity sensor get accuracy value of 100% by difference in the voltage increase of 0.5 volts is equivalent to increase of 10%. All information read by the sensors is displayed on the LCD using WMS-2000 (smart wireless). Keyword: Fuzzy, Microcontroller, Monitoring, Sensor data, Smart wireless

Modular System Design of Jajar Legowo Rice Transplanter Machine Azadi, Athoillah; Mandang, Tineke; Hermawan, Wawan; Mardison, Mardison
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 14 No. 4 (2025): August 2025
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtepl.v14i4.1176-1188

The Jajar Legowo rice transplanter has been proven to significantly improve the efficiency and effectiveness of rice planting, delivering better quality and uniformity. However, mobility on terraced land remains the primary challenge, thereby hindering the adoption of this technology by farmers. This study aimed to redesign the jajar legowo rice transplanter into a modular system to improve adaptability and ease of transport in such terrains. The research consisted of two main stages: module determination which included functional analysis, weight assessment, and component interconnection evaluation, while design analysis employed Finite Element Analysis (FEA) to assess structural strength and reliability through stress simulation. The findings indicated four main modules for the transplanter, namely: main transmission module, wheel module, feeding transmission module, and floating module. The module components have a maximum weight of 62.9 kg, which can be feasibly transported by two operators. The transmission neck interface and wheel transmission sustained operational loads of 700 N and 1000 N, respectively, with corresponding safety factors of 1.7 and 1.9. This study successfully developed a modular design for the jajar legowo rice transplanter machine that can be effectively used on terraced field. The design meets three critical adaptability indicators: (1) module weights remain within the lifting capacity of a maximum of two operators, (2) sufficient structural strength is maintained to endure operational loads, and (3) the assembly and disassembly process is achieved without the need for additional tools, minimizing the risk of component loss in the field. Keywords: Interface, Jajar legowo, Module, Rice transplanter, Stress analysis.

Rice Farming Applicator Robot Control System Based on Radio Wave Communication Using Flysky Fs-iA6 Type Remote Control and Arduino Mega Siskandar, Ridwan; Mandang, Tineke; Hermawan, Wawan; Irzaman, Irzaman
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 14 No. 5 (2025): October 2025
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtepl.v14i5.1948-1961

This research focuses on designing a control system for pesticide applicator robots on rice plants. Control is carried out via radio wave communication using a transmitter-receiver (Flysky FS-iA6 2.4 GHz). The remote can control the robot wheel (forward, backward and turn), boom sprayer (raise-fall and open-close), and spray pump. The research method is carried out using the waterfall model because it is under the needs that require a sequential flow in the process. The test results show that the use of a bevel gear gearbox can increase the torque value up to 3 times. The use of 4 electric motors further increases the stability of the robot's movement (RPM and torque) when given the maximum load of the robot. The boom sprayer successfully opens-closes and fluctuates smoothly at the optimum value of PWM 50 and voltage 2.35. The time required for the boom sprayer to open-close, and rise-fall is 30 s. The relay which functions as a switch is successfully controlled, so that the pump can be activated and deactivated in mode 2 at the input. Transmitter-receiver communication test was successfully carried out. Transmitter-receiver communication is capable of up to a distance of < 150 m. Input mode 1 on the transmitter successfully controls the boom sprayer. Input mode 2 successfully controls the motion of the wheels and pump.

Co-Authors Abdul Azis Adji P Agus Sutejo Agussabti Agussabti Agustami Sitorus, Agustami Ajat Zatmika Ana Nurhasanah Andriani Lubis Anggarani, Riesta Annisa Nur Ichniarsyah Anugerah Fitri Amalia Arif S Astu Unadi Ayatulloh Nur Amin Damawidjaya Biksono Desrial E Namaken Sembiring E Namaken Sembiring E. Namaken Sembiring E. Namaken Sembiring Frans Jusuf Daywin Gatot Pramuhadi Herry Susanto Husen Asbanu I Dewa Made Subrata I Nengah Suastawa Indya Dewi Iqbal . Iqbal . Iqbal . Irwin Syahri Cebro Irzaman, Irzaman Joko Prasetyo M A Chozin M Hidayat M. A. Chozin M. Faiz Syuaib Mardison Mardison Maria TJB Mohamad Solahudin Mohamad Yanuar Jawardi Purwanto Muhammad Dhafir Muhammad Idkham Muhammad Taufiq Nelwan, Leopold Oscar Ni Putu Dian Nitamiwati Oteng Haridjaja Radite P. A. Setiawan Radite Praeko A S Radite Praeko Agus Setiawan Ramayanti Bulan, Ramayanti Ramayanty Bulan Ramayanty Bulan Ramayanty Bulan Ridwan Siskandar Sam Herodian Setyo Pertiwi Soeharsono Soeharsono Sugiarto, Anto Tri Suparlan Suparlan Sutrisno Mardjan Tamaria Panggabean Taufik Rizaldi Teguh WW Uning B Wawan Hermawan Wawan Hermawan Wawan Hermawan Yanti, Delvi Yogi Sirodz Gaos

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