Research in Agricultural Engineering, 2024 (vol. 70), issue 2
Location-specific technology transfer model in an agricultural technology park, IndonesiaOriginal Paper
Harmi Andrianyta, Elisa Anggraeni, Sapta Raharja, Sukardi Sukardi
Res. Agr. Eng., 2024, 70(2):61-72 | DOI: 10.17221/7/2023-RAE 
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...
Drying and color kinetics of decorticated queen pineapple (Ananas comosus Linn.) fiber bleached with hydrogen peroxide solutionOriginal Paper
Roger Jay Lamadrid De Vela, Arnold Recidocruz Elepano
Res. Agr. Eng., 2024, 70(2):73-81 | DOI: 10.17221/47/2023-RAE
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....
Application of the physical properties of local cowpea varieties in the development of a multi-variety cowpea cleanerOriginal Paper
Babatunde Olusola Adetifa, Elizabeth Ayobami Olumomi, Taiwo Moses Samuel, Ayoola Abiola Babalola
Res. Agr. Eng., 2024, 70(2):82-91 | DOI: 10.17221/51/2023-RAE
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,...
Study on parameters affecting vibration in height adjustment of a combine harvester header modelOriginal Paper
Kittikhun Prasertkan, Prathuang Usaborisut, Krittatee Jindawong, Kiatkong Suwannakij, Anusorn Iamrurksiri
Res. Agr. Eng., 2024, 70(2):92-103 | DOI: 10.17221/53/2023-RAE
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...
Influence of soil tillage technology on tillage erosionOriginal Paper
Jaroslav Korba, Pavel Brož, Josef Hůla, Petr Novák, Václav Novák
Res. Agr. Eng., 2024, 70(2):104-110 | DOI: 10.17221/64/2023-RAE
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...
Digital image processing for preliminary detection of infected porang (Amorphophallus muelleri) seedlingsOriginal Paper
Aryanis Mutia Zahra, Noveria Anggi Nurrahmah, Sri Rahayoe, Rudiati Evi Masithoh, Muhammad Fahri Reza Pahlawan, Laila Rahmawati
Res. Agr. Eng., 2024, 70(2):111-121 | DOI: 10.17221/79/2023-RAE
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,...