Template-Type: ReDIF-Article 1.0 Author-Name: Harmi Andrianyta Author-Workplace-Name: Ministry of Agriculture of the Republic of Indonesia Author-Name: Elisa Anggraeni Author-Workplace-Name: Department of Agricultural industrial technology, IPB University, Bogor, Indonesia Author-Name: Sapta Raharja Author-Workplace-Name: Department of Agricultural industrial technology, IPB University, Bogor, Indonesia Author-Name: Sukardi Sukardi Author-Workplace-Name: Ministry of Agriculture of the Republic of Indonesia Title: Location-specific technology transfer model in an agricultural technology park, Indonesia Abstract: Diversity in the characteristics of agricultural locations has the potential to develop. Unfortunately, the weak transfer of technology based on the characteristics of the location indicates that this potential cannot grow properly. This research aims to synthesise a technology transfer model for an agricultural technology park (ATP) by considering site-specific conditions. This cross-case study was conducted at selected ATP locations. Model synthesis uses the system development life cycle stages of initiation, analysis, and design. The resource-based view approach was broken down into several variables during the analysis stage. Three location-specific technology transfer models were successfully developed: a technology transfer model based on highland specificity, a unique technology transfer model for urban farming, and a tourism village-based model. Keywords: analysis, characteristics, design, resources, initiation Journal: Research in Agricultural Engineering Pages: 61-72 Volume: 70 Issue: 2 Year: 2024 DOI: 10.17221/7/2023-RAE File-URL: http://rae.agriculturejournals.cz/doi/10.17221/7/2023-RAE.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/rae-202402-0001.txt Handle: RePEc:caa:jnlrae:v:70:y:2024:i:2:id:7-2023-RAE Template-Type: ReDIF-Article 1.0 Author-Name: Roger Jay Lamadrid De Vela Author-Workplace-Name: Camarines Norte State College, Camarines Norte, Philippines Author-Name: Arnold Recidocruz Elepano Author-Workplace-Name: University of the Philippines Los Baños, Laguna Philippines Title: Drying and color kinetics of decorticated queen pineapple (Ananas comosus Linn.) fiber bleached with hydrogen peroxide solution Abstract: The drying and colour kinetics of H2O2-bleached pineapple fibres were studied to determine an optimum drying condition and appropriate drying and colour kinetic models. The experiments were conducted under drying air temperatures of 40, 50 and 60 ºC, air velocities of 0.27, 0.38 and 0.42 m×s-1 and hydrogen peroxide (H2O2) concentrations of 1, 3 and 5% by volume arranged in a three-factor factorial experimental design. Colour values were quantified by the CIELab system where L* is the lightness value, a* is redness/greenness and b* is yellowness/blueness. Total colour difference (ΔE), chroma, hue angle, browning index (BI) and whiteness index (WI) were calculated. The L* value, a* value, b* value, WI, BI, hue angle, and chroma were significantly affected by the interaction of the three factors. A non-parametric test was conducted for the drying rate data and showed that the drying rate was influenced by different treatments. Tensile strength was not affected by any of the factors. The optimum drying condition was determined to be 57 ºC, at an air velocity of 0.345 m.s-1, and H2O2 concentration of 4.8%. The exponential model adequately described drying data. Zero-order kinetic equation described ΔE while L*, a*, b*, chroma, hue angle, WI and BI were satisfactorily described by the first-order kinetic equation. Keywords: browning index, CIELab colour system, fiber bleaching, chroma, hue angle, whiteness index Journal: Research in Agricultural Engineering Pages: 73-81 Volume: 70 Issue: 2 Year: 2024 DOI: 10.17221/47/2023-RAE File-URL: http://rae.agriculturejournals.cz/doi/10.17221/47/2023-RAE.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/rae-202402-0002.txt Handle: RePEc:caa:jnlrae:v:70:y:2024:i:2:id:47-2023-RAE Template-Type: ReDIF-Article 1.0 Author-Name: Babatunde Olusola Adetifa Author-Workplace-Name: Department of Agricultural Engineering, Faculty of Engineering, College of Engineering and Environmental Studies, Olabisi Onabanjo University, Ago Iwoye, Ogun State, Nigeria Author-Name: Elizabeth Ayobami Olumomi Author-Workplace-Name: Department of Agricultural Engineering, Faculty of Engineering, College of Engineering and Environmental Studies, Olabisi Onabanjo University, Ago Iwoye, Ogun State, Nigeria Author-Name: Taiwo Moses Samuel Author-Workplace-Name: Department of Agricultural Engineering, Faculty of Engineering, College of Engineering and Environmental Studies, Olabisi Onabanjo University, Ago Iwoye, Ogun State, Nigeria Author-Name: Ayoola Abiola Babalola Author-Workplace-Name: Department of Agricultural Engineering, Faculty of Engineering, College of Engineering and Environmental Studies, Olabisi Onabanjo University, Ago Iwoye, Ogun State, Nigeria Title: Application of the physical properties of local cowpea varieties in the development of a multi-variety cowpea cleaner Abstract: Cowpea, an annual legume widely grown and consumed in Nigeria, has been observed to contain between 27-33% impurities when freshly harvested and threshed. This poses a threat to humans when consumed and in large-scale agricultural processing. Therefore, this study is aimed at developing and evaluating the performance of a multi-variety cowpea cleaner (MVCC). Using standard methods, some selected engineering properties of the cowpea varieties were examined and used in the design of the MVCC. The cowpea had a moisture content of 8-14%, depending on the locations and varieties. Other properties investigated include the length, width, thickness, sphericity, geometric mean diameter, unit volume, arithmetic mean diameter, aspect ratio, surface area, unit weight, true density, terminal velocity, and angle of repose. The MVCC comprised the hopper, winnower, cleaning unit, fan assembly, and frame. The performance of the MVCC was also evaluated. The efficiency of separating good products of honey, drum, and Sokoto White beans was 95, 91, and 84%, respectively, while separating bad products was 87, 94, and 96%, respectively. Keywords: cleaning, drum beans, honey beans, separation, Sokoto white beans, quality of cleaning Journal: Research in Agricultural Engineering Pages: 82-91 Volume: 70 Issue: 2 Year: 2024 DOI: 10.17221/51/2023-RAE File-URL: http://rae.agriculturejournals.cz/doi/10.17221/51/2023-RAE.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/rae-202402-0003.txt Handle: RePEc:caa:jnlrae:v:70:y:2024:i:2:id:51-2023-RAE Template-Type: ReDIF-Article 1.0 Author-Name: Kittikhun Prasertkan Author-Workplace-Name: National Metal and Materials Technology Center (MTEC), Prathumthani, Thailand Author-Name: Prathuang Usaborisut Author-Workplace-Name: Department of Agricultural Engineering, Faculty of Engineering at Kamphaengsaen, Kasetsart University, Kamphaengsaen Campus, Nakhonpathom, Thailand Author-Name: Krittatee Jindawong Author-Workplace-Name: National Metal and Materials Technology Center (MTEC), Prathumthani, Thailand Author-Name: Kiatkong Suwannakij Author-Workplace-Name: National Metal and Materials Technology Center (MTEC), Prathumthani, Thailand Author-Name: Anusorn Iamrurksiri Author-Workplace-Name: National Metal and Materials Technology Center (MTEC), Prathumthani, Thailand Title: Study on parameters affecting vibration in height adjustment of a combine harvester header model Abstract: In Thailand, vibration problems often occur with rice combine harvester automatic header height adjusting systems. This study aimed to identify parameters for reducing the vibration and managing response time for harvesting speed configuration. An experimental combine harvester header model was designed to automatically adjust three parameters: total movement time, time ratio, and final phase distance within vertical movement ranges of 200, 250, or 300 mm. These parameters were controlled using a proportional flow control valve and a professional learning community (PLC) control unit. The results showed that increased time ratio, final phase distance, and total movement time significantly reduced average vibration amplitude. Higher time ratios corresponded to lower vibration amplitude during changing stages but higher amplitude during stopping stages. Vibration amplitudes during starting, changing, and stopping stages ranged from 0.622 to 1.373 mm, 0.042 to 1.097 mm, and 0.132 to 0.902 mm, respectively, for 200, 250, and 300 mm vertical movement distances. To reduce vibration in the first and second wave phases, precise control of start and final speeds through time ratio and total movement time was necessary. Minimizing the time ratio and final phase distance effectively reduced vibration amplitude in the third wave phase. Keywords: automatic control, rice, vibration amplitude Journal: Research in Agricultural Engineering Pages: 92-103 Volume: 70 Issue: 2 Year: 2024 DOI: 10.17221/53/2023-RAE File-URL: http://rae.agriculturejournals.cz/doi/10.17221/53/2023-RAE.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/rae-202402-0004.txt Handle: RePEc:caa:jnlrae:v:70:y:2024:i:2:id:53-2023-RAE Template-Type: ReDIF-Article 1.0 Author-Name: Aryanis Mutia Zahra Author-Workplace-Name: Department of Agricultural and Biosystems Engineering, Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia Author-Name: Noveria Anggi Nurrahmah Author-Workplace-Name: Department of Agricultural and Biosystems Engineering, Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia Author-Name: Sri Rahayoe Author-Workplace-Name: Department of Agricultural and Biosystems Engineering, Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia Author-Name: Rudiati Evi Masithoh Author-Workplace-Name: Department of Agricultural and Biosystems Engineering, Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia Author-Name: Muhammad Fahri Reza Pahlawan Author-Workplace-Name: Department of Smart Agriculture Systems, College of Agricultural and Life Science, Chungnam National University, Daejeon, South Korea Author-Name: Laila Rahmawati Author-Workplace-Name: Research Center for Food Technology and Processing, National Research and Innovation Agency, Yogyakarta, Indonesia Title: Digital image processing for preliminary detection of infected porang (Amorphophallus muelleri) seedlings Abstract: Porang (Amorphophallus muelleri) is  an Indonesian parental plant tuber developed vegetatively from bulbils during dormancy and harvested through petiole detachment for the industrial production of glucomannan. Pathogenic fungi and whiteflies can cause infection during harvesting and storage, destructing plant cells as well as reducing seed quality and crop yields. Therefore, this study aimed to develop a calibration model for detecting infected and non-infected porang bulbils using a computer vision system. Image parameters such as colour (red, green, blue - RGB and hue, saturation, intensity - HSI), texture (contrast, homogeneity, correlation, energy, and entropy), and dimensions (width, area, and height) were evaluated on 90 samples in three positions. The results showed that the majority of image quality properties were significantly associated with non-infected and infected porang bulbils as showed by Pearson correlation values of 0.901 and 0.943, respectively. Discriminant analysis based on image attributes effectively classified non-infected and infected seedlings, achieving a model accuracy of 97.0% for correctly classified cross-validated grouped cases. Therefore, computer vision can be used for the preliminary detection of fungal infection in porang bulbils, as evidenced by its high accuracy and outstanding model performance. Keywords: discriminant analysis, gray-level cooccurrence matrix, model performance, seed quality, vegetative phase Journal: Research in Agricultural Engineering Pages: 111-121 Volume: 70 Issue: 2 Year: 2024 DOI: 10.17221/79/2023-RAE File-URL: http://rae.agriculturejournals.cz/doi/10.17221/79/2023-RAE.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/rae-202402-0005.txt Handle: RePEc:caa:jnlrae:v:70:y:2024:i:2:id:79-2023-RAE Template-Type: ReDIF-Article 1.0 Author-Name: Jaroslav Korba Author-Workplace-Name: Department of Machinery Utilization, Faculty of Engineering, Czech University of Life Sciences Prague, Prague, Czech Republic Author-Name: Pavel Brož Author-Workplace-Name: Department of Agricultural Machines, Faculty of Engineering, Czech University of Life Sciences Prague, Prague, Czech Republic Author-Name: Josef Hůla Author-Workplace-Name: Department of Agricultural Machines, Faculty of Engineering, Czech University of Life Sciences Prague, Prague, Czech Republic Author-Name: Petr Novák Author-Workplace-Name: Department of Agricultural Machines, Faculty of Engineering, Czech University of Life Sciences Prague, Prague, Czech Republic Author-Name: Václav Novák Author-Workplace-Name: Department of Machinery Utilization, Faculty of Engineering, Czech University of Life Sciences Prague, Prague, Czech Republic Title: Influence of soil tillage technology on tillage erosion Abstract: Tillage-induced erosion has negative impacts on the soil environment and production of the soil under intensive farming. Tillage erosion was evaluated during soil tillage performed by two technologies, i.e. conventional tillage and reduced tillage, commonly used in the Czech Republic. A field experiment was aimed at evaluating the soil particle translocation and magnitude of the vector angle. Aluminium cubes with an edge length of 16 mm were used as tracers. After each soil tillage operation, a metal detector searched these tracers in the topsoil. During the experiment, agricultural practices were always carried out on their respective dates for the whole season. The experiment results show that conventional tillage had a more adverse effect on tillage erosion than reduced tillage. This was confirmed on three experimental parcels with different slope gradients of 2, 6 and 11°. The largest translocation of soil tracers was observed on a parcel with the highest slope of 11°. There, the length of the translocation of tracers reached up  to almost 10 m. The average length of soil tracer translocation in reduced tillage and conventional tillage ranged between 0.86 and 3.69 m. The largest average vector angle of tracer locations was recorded on a parcel with a slope of 6° for reduced tillage. In the treatment with the slope of 2° and conventional tillage used, the direction vector indicated upslope translocation of soil tracers. It was caused by soil tillage with a mouldboard plough turning over the topsoil layer upslope. In a treatment with a slope of 2° and reduced tillage used, no influence of the crosswise slope gradient of the plot on the direction vector was observed. The acquired knowledge will be used in further study of soil erosion processes. Keywords: soil erosion, cultivators, mouldboard plough, soil tracers translocation, soil sustainability Journal: Research in Agricultural Engineering Pages: 104-110 Volume: 70 Issue: 2 Year: 2024 DOI: 10.17221/64/2023-RAE File-URL: http://rae.agriculturejournals.cz/doi/10.17221/64/2023-RAE.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/rae-202402-0006.txt Handle: RePEc:caa:jnlrae:v:70:y:2024:i:2:id:64-2023-RAE