Abstract Precision agriculture (PA) is a farm management strategy that relies on various technologies to improve the productivity and sustainability of farming operations. The adoption of PA entails on-farm and off-farm benefits; however, the adoption rates remain low in Iran. Using the socio-psychological framework of the technology acceptance model (TAM), this study examined agricultural extension experts‘ intentions to use precision agricultural technologies (PATs) in Ardabil province, Iran. Structural equation modelling (SEM-PLS) was used to map the components of the TAM (perceived usefulness, perceived ease of use, and attitudes toward PATs). All the components of the TAM showed a significant effect on experts‘ intentions, confirming the importance of socio-psychological variables in predicting agricultural experts‘ decision to apply PATs. Experts perceived PATs as helpful and relatively easy to use. In addition, they had positive attitudes toward PATs and intended to use most PA technologies. The TAM posits that two attitudinal components of perceived usefulness (PU) and perceived ease of use (PEU) determine acceptance and use. PU is the degree to which one believes using technology would enhance job performance, while PEU is the degree to which using technology is free of effort. The results showed that PEU and PU had a positive impact on attitudes. The three constructs positively affected behavioural intention toward the application of PATs and explained 68.8% of the variance of this construct. Due to the novelty of PA in the country, PEU was the most critical determinant of intention.
摘要 精确农业（PA）是一种农场管理战略，依靠各种技术来提高农业生产率和可持续性。采用精准农业技术会给农场内外带来好处，但在伊朗采用率仍然很低。本研究采用技术接受模型（TAM）的社会心理框架，考察了伊朗阿尔达比勒省农业推广专家使用精准农业技术（PATs）的意向。研究采用结构方程模型（SEM-PLS）绘制了技术接受模型的各组成部分（感知有用性、感知易用性和对精准农业技术的态度）。TAM 的所有组成部分都对专家的意向有显著影响，这证实了社会心理变量在预测农业专家应用 PATs 的决策中的重要性。专家们认为专利自动评估技术很有帮助，而且相对容易使用。此外，专家们对农业试验技术持积极态度，并打算使用大多数农业试验技术。该理论认为，感知有用性（PU）和感知易用性（PEU）这两个态度成分决定了接受和使用情况。PU 是指人们认为使用技术能提高工作绩效的程度，而 PEU 则是指使用技术不费吹灰之力的程度。结果显示，PEU 和 PU 对态度有积极影响。这三个构念对应用 PAT 的行为意向产生了积极影响，并解释了该构念 68.8% 的方差。由于 PA 在我国的新颖性，PEU 是决定意向的最关键因素。
{"title":"Extension Experts‘ Intentions to use Precision Agricultural Technologies, a Test with the Technology Acceptance Model","authors":"Asghar Bagheri, Javad Tarighi, Naier Emami, Mariusz Szymanek","doi":"10.2478/ata-2024-0012","DOIUrl":"https://doi.org/10.2478/ata-2024-0012","url":null,"abstract":"Abstract Precision agriculture (PA) is a farm management strategy that relies on various technologies to improve the productivity and sustainability of farming operations. The adoption of PA entails on-farm and off-farm benefits; however, the adoption rates remain low in Iran. Using the socio-psychological framework of the technology acceptance model (TAM), this study examined agricultural extension experts‘ intentions to use precision agricultural technologies (PATs) in Ardabil province, Iran. Structural equation modelling (SEM-PLS) was used to map the components of the TAM (perceived usefulness, perceived ease of use, and attitudes toward PATs). All the components of the TAM showed a significant effect on experts‘ intentions, confirming the importance of socio-psychological variables in predicting agricultural experts‘ decision to apply PATs. Experts perceived PATs as helpful and relatively easy to use. In addition, they had positive attitudes toward PATs and intended to use most PA technologies. The TAM posits that two attitudinal components of perceived usefulness (PU) and perceived ease of use (PEU) determine acceptance and use. PU is the degree to which one believes using technology would enhance job performance, while PEU is the degree to which using technology is free of effort. The results showed that PEU and PU had a positive impact on attitudes. The three constructs positively affected behavioural intention toward the application of PATs and explained 68.8% of the variance of this construct. Due to the novelty of PA in the country, PEU was the most critical determinant of intention.","PeriodicalId":43089,"journal":{"name":"Acta Technologica Agriculturae","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141413488","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ehsan FARTASH NAEİMİ, G. Gürdil, Roman Gálik, B. Demirel
Abstract The greenhouse sector is responsible for the largest proportion of total final energy consumption in agriculture. One effective method to reduce overall energy consumption in greenhouses is through an economical and efficient control strategy. In this study, a computer program was developed using the Visual Basic programming language to calculate the required heat flow for the growth and cultivation of greenhouse crops in most cities of Iran. The results indicated that the plastic covering material with double artificial plates was superior to other materials in maintaining internal heat. In the cities of Shiraz and Yazd, it was possible to cultivate pepper, tomato, cucumber, rose, lettuce, and strawberry with heat flow within the range of 0–24 kW and 0–30 kW, respectively. For colder cities such as Tabriz and Arak, the investigated parameter was calculated to be within the ranges of 24–70 kW and 17–63 kW, respectively. When comparing two other greenhouse covering materials, the minimum and maximum heat flow required for lettuce (glass with steel frame – Yazd and Shiraz) and rose cultivation (glass single plate – Tabriz) were observed to be 0 kW and 156.75 kW, respectively.
{"title":"Evaluating Required Heat Flow by Software Analyses in Greenhouses: Case Study of Iran","authors":"Ehsan FARTASH NAEİMİ, G. Gürdil, Roman Gálik, B. Demirel","doi":"10.2478/ata-2024-0015","DOIUrl":"https://doi.org/10.2478/ata-2024-0015","url":null,"abstract":"Abstract The greenhouse sector is responsible for the largest proportion of total final energy consumption in agriculture. One effective method to reduce overall energy consumption in greenhouses is through an economical and efficient control strategy. In this study, a computer program was developed using the Visual Basic programming language to calculate the required heat flow for the growth and cultivation of greenhouse crops in most cities of Iran. The results indicated that the plastic covering material with double artificial plates was superior to other materials in maintaining internal heat. In the cities of Shiraz and Yazd, it was possible to cultivate pepper, tomato, cucumber, rose, lettuce, and strawberry with heat flow within the range of 0–24 kW and 0–30 kW, respectively. For colder cities such as Tabriz and Arak, the investigated parameter was calculated to be within the ranges of 24–70 kW and 17–63 kW, respectively. When comparing two other greenhouse covering materials, the minimum and maximum heat flow required for lettuce (glass with steel frame – Yazd and Shiraz) and rose cultivation (glass single plate – Tabriz) were observed to be 0 kW and 156.75 kW, respectively.","PeriodicalId":43089,"journal":{"name":"Acta Technologica Agriculturae","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141411212","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. J. Nassir, Marwan N. Ramadhan, Ali A. Alwan, Sadiq Muhsin
Abstract The study aimed to determine the optimal pulverisation index of soil for disk harrow by modelling. A mathematical model was developed using a Design-Expert software and response surface methodology. Experiments were carried out in silty loamy soil with three different levels of soil moisture content of 9.25%, 17.56%, and 22.32%, operating depths of 10 cm, 15 cm, and 20 cm, and operating speeds of 3.17, 4.85, and 5.47 km·h-1. The quadratic model proposed by the Design-Expert software was statistically significant (P <0.01), with a strong correlation relationship (R2 = 0.989) between actual and predicted soil pulverisation index values. The adequacy precision achieved at 41.84 showed the models‘ ability to navigate the design space. However, statistical analysis, using the t-test and P-value, showed the actual and predicted values have no significant differences in the pulverisation index of soil. The optimal soil pulverisation index (8.61 mm) was achieved with a desirability of 1.00, at a soil moisture content of 14.43%, an operating depth of 11.64 cm, and a forward speed of 5.30 km·h-1. Model validation confirmed acceptability (R2 = 0.974) and a 99% accuracy in predicting the soil pulverisation index.
{"title":"Optimisation and Modelling of Soil Pulverisation Index Using Response Surface Methodology for Disk Harrow Under Different Operational Conditions","authors":"A. J. Nassir, Marwan N. Ramadhan, Ali A. Alwan, Sadiq Muhsin","doi":"10.2478/ata-2024-0011","DOIUrl":"https://doi.org/10.2478/ata-2024-0011","url":null,"abstract":"Abstract The study aimed to determine the optimal pulverisation index of soil for disk harrow by modelling. A mathematical model was developed using a Design-Expert software and response surface methodology. Experiments were carried out in silty loamy soil with three different levels of soil moisture content of 9.25%, 17.56%, and 22.32%, operating depths of 10 cm, 15 cm, and 20 cm, and operating speeds of 3.17, 4.85, and 5.47 km·h-1. The quadratic model proposed by the Design-Expert software was statistically significant (P <0.01), with a strong correlation relationship (R2 = 0.989) between actual and predicted soil pulverisation index values. The adequacy precision achieved at 41.84 showed the models‘ ability to navigate the design space. However, statistical analysis, using the t-test and P-value, showed the actual and predicted values have no significant differences in the pulverisation index of soil. The optimal soil pulverisation index (8.61 mm) was achieved with a desirability of 1.00, at a soil moisture content of 14.43%, an operating depth of 11.64 cm, and a forward speed of 5.30 km·h-1. Model validation confirmed acceptability (R2 = 0.974) and a 99% accuracy in predicting the soil pulverisation index.","PeriodicalId":43089,"journal":{"name":"Acta Technologica Agriculturae","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141406561","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
P. Kozuch, L. Hujo, J. Kaszkowiak, M. Markiewicz-Patalon
Abstract The paper deals with the evaluation of service brake braking of a selected group of vehicles depending on the wear of brake system‘s parts. During the research, the technical condition of brake systems, the degree of wear of brake discs, brake pads, and the measurement of braking forces using a roller brake tester was monitored and evaluated on a sample of 16 intercity buses for a period of three years. The measurement was carried out on 2 selected intercity buses SOR C 10.5 and IVECO Crossway. The maximum braking forces on both axles of buses were measured using a roller brake tester. Then, the percentage braking of the vehicle was calculated and compared with the minimum required braking according to applicable legislation. Based on the inspection of technical condition of brake pads and discs, it was possible to detect the wear and tear of these elements of the brake system (which was manifested during the inspection of the vehicle on the roller brake tester), and it was also possible to record the insufficient value of the required minimum braking during the calculation.
摘要 本文根据制动系统部件的磨损情况，对选定车辆组的行车制动进行了评估。研究期间，对 16 辆城际公交车进行了为期三年的制动系统技术状况、制动盘和制动片磨损程度的监测和评估，并使用辊式制动测试仪测量了制动力。测量在两辆选定的城际公交车 SOR C 10.5 和 IVECO Crossway 上进行。使用辊式制动测试仪测量了巴士两轴上的最大制动力。然后，计算出车辆的制动百分比，并与适用法律规定的最低制动要求进行比较。根据对制动片和制动盘技术状况的检查，可以检测出制动系统中这些元件的磨损情况（在滚轴制动测试仪上对车辆进行检查时显示出来），还可以在计算过程中记录所需的最低制动值不足的情况。
{"title":"Evaluation of Service Brake Braking of Selected Group of Vehicles Depending on Wear of Brake System‘s Parts","authors":"P. Kozuch, L. Hujo, J. Kaszkowiak, M. Markiewicz-Patalon","doi":"10.2478/ata-2024-0014","DOIUrl":"https://doi.org/10.2478/ata-2024-0014","url":null,"abstract":"Abstract The paper deals with the evaluation of service brake braking of a selected group of vehicles depending on the wear of brake system‘s parts. During the research, the technical condition of brake systems, the degree of wear of brake discs, brake pads, and the measurement of braking forces using a roller brake tester was monitored and evaluated on a sample of 16 intercity buses for a period of three years. The measurement was carried out on 2 selected intercity buses SOR C 10.5 and IVECO Crossway. The maximum braking forces on both axles of buses were measured using a roller brake tester. Then, the percentage braking of the vehicle was calculated and compared with the minimum required braking according to applicable legislation. Based on the inspection of technical condition of brake pads and discs, it was possible to detect the wear and tear of these elements of the brake system (which was manifested during the inspection of the vehicle on the roller brake tester), and it was also possible to record the insufficient value of the required minimum braking during the calculation.","PeriodicalId":43089,"journal":{"name":"Acta Technologica Agriculturae","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141405627","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Nadia Saadati, R. Pourdarbani, S. Sabzi, José Luis Hernandez-Hernandez
Abstract Corn is rich in fibre, vitamins, and minerals, and it is a nutritious source of carbohydrates. The area under corn cultivation is very large because, in addition to providing food for humans and animals, it is also used for raw materials for industrial products. Corn cultivation is exposed to the damage of various pests such as armyworm. A regional monitoring of pests is intended to actively track the population of this pest in a specific geography; one of the ways of monitoring is using the image processing technology. Therefore, the aim of this research was to identify healthy and armyworm-infected leaves using image processing and deep neural network in the form of 4 structures named AlexNet, DenseNet, EfficientNet, and GoogleNet. A total of 4500 images, including healthy and infected leaves, were collected. Next, models were trained by train data. Then, test data were evaluated using the evaluation criteria such as accuracy, precision, and F score. Results indicated all the classifiers obtained the precision above 98%, but the EfficientNet-based classifier was more successful in classification with the precision of 100%, accuracy of 99.70%, and F-score of 99.68%.
{"title":"Identification of Armyworm-Infected Leaves in Corn by Image Processing and Deep Learning","authors":"Nadia Saadati, R. Pourdarbani, S. Sabzi, José Luis Hernandez-Hernandez","doi":"10.2478/ata-2024-0013","DOIUrl":"https://doi.org/10.2478/ata-2024-0013","url":null,"abstract":"Abstract Corn is rich in fibre, vitamins, and minerals, and it is a nutritious source of carbohydrates. The area under corn cultivation is very large because, in addition to providing food for humans and animals, it is also used for raw materials for industrial products. Corn cultivation is exposed to the damage of various pests such as armyworm. A regional monitoring of pests is intended to actively track the population of this pest in a specific geography; one of the ways of monitoring is using the image processing technology. Therefore, the aim of this research was to identify healthy and armyworm-infected leaves using image processing and deep neural network in the form of 4 structures named AlexNet, DenseNet, EfficientNet, and GoogleNet. A total of 4500 images, including healthy and infected leaves, were collected. Next, models were trained by train data. Then, test data were evaluated using the evaluation criteria such as accuracy, precision, and F score. Results indicated all the classifiers obtained the precision above 98%, but the EfficientNet-based classifier was more successful in classification with the precision of 100%, accuracy of 99.70%, and F-score of 99.68%.","PeriodicalId":43089,"journal":{"name":"Acta Technologica Agriculturae","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141405400","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract This study evaluates anaerobic bioconversion using landfill-derived microbes to produce volatile fatty acids (VFAs) as bioproducts. The research was conducted using different substrates, including elephant grass, starch waste, and fruit waste. Landfill-derived microbes collected from the landfill site were used as inoculum. The results show that the carbohydrate composition in the substrate affects VFA production. Simpler substrates, such as starch waste and fruit waste, produced more VFAs (approximately 50 mmol · L–1) than that of more complex substrate of grass (approximately 25 mmol · L–1). The results showed that using simpler substrates (i.e. starch and fruit waste) produce VFAs two times higher than that of the complex substrate or lignocellulosic biomass-based feedstock (i.e. grass). These findings provide valuable insights into the potential use of landfill-derived microbes in the anaerobic bioconversion process to produce VFAs. By understanding the influence of carbohydrate composition, we can enhance the efficiency of VFA production from organic waste, which can be used in various industrial applications. This is a crucial step towards more sustainable waste management and more efficient resource utilisation.
{"title":"Sustainable Bioproduct Production via Anaerobic Bioconversion by Landfill Soil Inoculum in Various Carbohydrate Wastes","authors":"Andriy Anta Kacaribu, Darwin","doi":"10.2478/ata-2024-0009","DOIUrl":"https://doi.org/10.2478/ata-2024-0009","url":null,"abstract":"Abstract This study evaluates anaerobic bioconversion using landfill-derived microbes to produce volatile fatty acids (VFAs) as bioproducts. The research was conducted using different substrates, including elephant grass, starch waste, and fruit waste. Landfill-derived microbes collected from the landfill site were used as inoculum. The results show that the carbohydrate composition in the substrate affects VFA production. Simpler substrates, such as starch waste and fruit waste, produced more VFAs (approximately 50 mmol · L–1) than that of more complex substrate of grass (approximately 25 mmol · L–1). The results showed that using simpler substrates (i.e. starch and fruit waste) produce VFAs two times higher than that of the complex substrate or lignocellulosic biomass-based feedstock (i.e. grass). These findings provide valuable insights into the potential use of landfill-derived microbes in the anaerobic bioconversion process to produce VFAs. By understanding the influence of carbohydrate composition, we can enhance the efficiency of VFA production from organic waste, which can be used in various industrial applications. This is a crucial step towards more sustainable waste management and more efficient resource utilisation.","PeriodicalId":43089,"journal":{"name":"Acta Technologica Agriculturae","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141393596","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Marek Mojžiš, J. Jobbágy, Vladimír Rataj, J. Zsembeli
Abstract The present study compares the consequences of soil compaction due to machinery in a selected 13.7 ha plot at Hronské Kosihy (Slovak Republic). The crop was winter wheat, while the changes of selected soil properties (penetration resistance and gravimetric soil water content) were monitored. The experimental plot was divided into 11 zones with different initial status of compaction: one of them was the reference zone without compaction (P1), five zones were out of the track line, four were directly in the track lines, and one was a collection route. The number of passages in each zone was from 0 up to more than 15. The impact of the number of machinery passages on gravimetric soil water content was found significant both in and out of the track lines with an average value of 17.37%. The monitoring of the passage number showed to be important also in the monitoring of soil penetration resistance (P <0.05). The average value of penetration resistance in the P1 zone was 2.33 MPa. The dependence of soil compaction on passages (P <0.05) was identified by the assessment and comparison of individual impacts of passages in the track zones (P3, P4, P6, and P7). A similar scenario was found also in case of the dependence of soil compaction on the passages monitored off the track lines (P2, P5). Also, the change of tire pressure was statistically significant, its decrease from 0.19 to 0.15 MPa showed to be beneficial. The highest compaction was monitored in the passages in P11 with an average value of 5.36 MPa, representing 2.3 times higher values than the reference one. The creation of a collection line enables reducing the compaction of the entire plot. The collection line should cover only a very small part of the plot.
{"title":"Impact of Machinery Passages on Soil Compaction in Field Conditions","authors":"Marek Mojžiš, J. Jobbágy, Vladimír Rataj, J. Zsembeli","doi":"10.2478/ata-2024-0016","DOIUrl":"https://doi.org/10.2478/ata-2024-0016","url":null,"abstract":"Abstract The present study compares the consequences of soil compaction due to machinery in a selected 13.7 ha plot at Hronské Kosihy (Slovak Republic). The crop was winter wheat, while the changes of selected soil properties (penetration resistance and gravimetric soil water content) were monitored. The experimental plot was divided into 11 zones with different initial status of compaction: one of them was the reference zone without compaction (P1), five zones were out of the track line, four were directly in the track lines, and one was a collection route. The number of passages in each zone was from 0 up to more than 15. The impact of the number of machinery passages on gravimetric soil water content was found significant both in and out of the track lines with an average value of 17.37%. The monitoring of the passage number showed to be important also in the monitoring of soil penetration resistance (P <0.05). The average value of penetration resistance in the P1 zone was 2.33 MPa. The dependence of soil compaction on passages (P <0.05) was identified by the assessment and comparison of individual impacts of passages in the track zones (P3, P4, P6, and P7). A similar scenario was found also in case of the dependence of soil compaction on the passages monitored off the track lines (P2, P5). Also, the change of tire pressure was statistically significant, its decrease from 0.19 to 0.15 MPa showed to be beneficial. The highest compaction was monitored in the passages in P11 with an average value of 5.36 MPa, representing 2.3 times higher values than the reference one. The creation of a collection line enables reducing the compaction of the entire plot. The collection line should cover only a very small part of the plot.","PeriodicalId":43089,"journal":{"name":"Acta Technologica Agriculturae","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141399746","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ana Nurhasanah, Wawan Hermawan, T. Mandang, A. Unadi, U. Budiharti, Suparlan, Herry Susanto, Anugerah F. Amalia, D. Sagita, T. W. Widodo, M. J. T. Budiastuti, Muhammad Hidayat, A. Samudiantono, N. P. D. Nitamiwati
Abstract Sorghum is a plant with broad adaptability, is resistant to drought, and is very suitable in marginal areas. Sorghum plants contain 7% to 17% seed composition and 83% to 93% leaf stems. At harvest, the moisture content of seeds is 20% to 30%, and the stem is around 76% to 88%. Several stages are carried out after the sorghum harvesting process, and one of them is threshing the sorghum seeds. The threshing of sorghum seeds requires a hold-on threshing machine so seeds can be threshed immediately after harvest, and the stems from sorghum plants can be chopped directly for cattle feed. This study aims to design and test the performance of a hold-on type sorghum threshing machine that can be used to thresh sorghum seeds immediately after harvesting at a grain moisture content of around 20% to 30%. The methods used include problem considerations, the preparation of structural designs, functional designs, manufacturing drawing designs, and manufacturing functional and performance testing. The results of testing the performance of the threshing machine revealed that the working capacity of the machine was affected by rod clamp rotation, the threshing cylinder, and the moisture content of sorghum seeds. The cleanliness level of sorghum seeds is above 90%, while the level of seed damage ranges from 0% to 1%.
{"title":"Design and Performance of Hold-on Type Sorghum Thresher for High Moisture Content","authors":"Ana Nurhasanah, Wawan Hermawan, T. Mandang, A. Unadi, U. Budiharti, Suparlan, Herry Susanto, Anugerah F. Amalia, D. Sagita, T. W. Widodo, M. J. T. Budiastuti, Muhammad Hidayat, A. Samudiantono, N. P. D. Nitamiwati","doi":"10.2478/ata-2024-0010","DOIUrl":"https://doi.org/10.2478/ata-2024-0010","url":null,"abstract":"Abstract Sorghum is a plant with broad adaptability, is resistant to drought, and is very suitable in marginal areas. Sorghum plants contain 7% to 17% seed composition and 83% to 93% leaf stems. At harvest, the moisture content of seeds is 20% to 30%, and the stem is around 76% to 88%. Several stages are carried out after the sorghum harvesting process, and one of them is threshing the sorghum seeds. The threshing of sorghum seeds requires a hold-on threshing machine so seeds can be threshed immediately after harvest, and the stems from sorghum plants can be chopped directly for cattle feed. This study aims to design and test the performance of a hold-on type sorghum threshing machine that can be used to thresh sorghum seeds immediately after harvesting at a grain moisture content of around 20% to 30%. The methods used include problem considerations, the preparation of structural designs, functional designs, manufacturing drawing designs, and manufacturing functional and performance testing. The results of testing the performance of the threshing machine revealed that the working capacity of the machine was affected by rod clamp rotation, the threshing cylinder, and the moisture content of sorghum seeds. The cleanliness level of sorghum seeds is above 90%, while the level of seed damage ranges from 0% to 1%.","PeriodicalId":43089,"journal":{"name":"Acta Technologica Agriculturae","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141410780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
L. Hennessey-Ramos, Walter Murillo-Arango, Juliana Vasco-Correa
The current study sought to determine the potential of cacao pod husks for energy use. Biogas potential, the kinetics of anaerobic digestion at bench scale, and physicochemical characterisation of materials were evaluated for cacao pod husks (CPH), depectinised cacao pod husks (CPH-D), and cacao pod husks treated by Pleurotus spp. (CPH-DF). These materials showed accumulated biogas productions of 314.86 ±4.45 l·kg−1 VS−1, 369.49 ±15.98 l·kg−1 VS−1, and 342.52 ±10.98 l·kg−1 VS−1, respectively. The calorific values in CPH-DF, CPH, and CHP-DF were 17.65 MJ·kg−1, 15.43 MJ·kg−1, and 17.21 MJ·kg−1, respectively. These values indicate that the evaluated materials have a high potential to be used as biofuels.
{"title":"Use of Cacao Pod Husks Under Different Pretreatments for Bioenergy Production","authors":"L. Hennessey-Ramos, Walter Murillo-Arango, Juliana Vasco-Correa","doi":"10.2478/ata-2024-0003","DOIUrl":"https://doi.org/10.2478/ata-2024-0003","url":null,"abstract":"\u0000 The current study sought to determine the potential of cacao pod husks for energy use. Biogas potential, the kinetics of anaerobic digestion at bench scale, and physicochemical characterisation of materials were evaluated for cacao pod husks (CPH), depectinised cacao pod husks (CPH-D), and cacao pod husks treated by Pleurotus spp. (CPH-DF). These materials showed accumulated biogas productions of 314.86 ±4.45 l·kg−1 VS−1, 369.49 ±15.98 l·kg−1 VS−1, and 342.52 ±10.98 l·kg−1 VS−1, respectively. The calorific values in CPH-DF, CPH, and CHP-DF were 17.65 MJ·kg−1, 15.43 MJ·kg−1, and 17.21 MJ·kg−1, respectively. These values indicate that the evaluated materials have a high potential to be used as biofuels.","PeriodicalId":43089,"journal":{"name":"Acta Technologica Agriculturae","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2024-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140433654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The degradation of chernozems and increased soil erosion led to the search for more advanced methods of tillage, taking into account climatic conditions, the quantity and quality of crop residues, and the volume of fertilizer application. The aim of the study was to establish the effect of various methods of basic tillage in the presence of preceding plant‘s crop residues on the growth and development of spring barley plants. The experiment was carried out in the forest-steppe of Ukraine. During the experiment, the influence of various methods of basic tillage on the agrophysical properties of the soil, its water regime, and weed infestation of spring barley crops was studied. For comparison, the following types of basic tillage were used: dump to a depth of 20–22 cm, chisel tillage to a depth of 14–16 cm, and disc tillage to a depth of 10–12 cm. Dump and chisel processing were characterized by higher grain yield. Chisel tillage provided better moisture accumulation compared to reverse ploughing. In spring, at the time of sowing grain crops in the layer of 0–15 cm, the reserves of productive moisture during chiselling were 145 mm, and during mouldboard processing 122.6 mm. Thus, chisel tillage for spring barley creates the best conditions for moisture supply and guarantees a high level of grain yield and significant profitability of production.
{"title":"Chisel Tillage Under Spring Barley in the Forest-Steppe","authors":"Yurii Syromyatnikov, Sergey Voinash, Irina Troyanovskaya, Ramil Zagidullin, Evgeniy Tikhonov, Alexandra Orekhovskaya","doi":"10.2478/ata-2024-0005","DOIUrl":"https://doi.org/10.2478/ata-2024-0005","url":null,"abstract":"\u0000 The degradation of chernozems and increased soil erosion led to the search for more advanced methods of tillage, taking into account climatic conditions, the quantity and quality of crop residues, and the volume of fertilizer application. The aim of the study was to establish the effect of various methods of basic tillage in the presence of preceding plant‘s crop residues on the growth and development of spring barley plants. The experiment was carried out in the forest-steppe of Ukraine. During the experiment, the influence of various methods of basic tillage on the agrophysical properties of the soil, its water regime, and weed infestation of spring barley crops was studied. For comparison, the following types of basic tillage were used: dump to a depth of 20–22 cm, chisel tillage to a depth of 14–16 cm, and disc tillage to a depth of 10–12 cm. Dump and chisel processing were characterized by higher grain yield. Chisel tillage provided better moisture accumulation compared to reverse ploughing. In spring, at the time of sowing grain crops in the layer of 0–15 cm, the reserves of productive moisture during chiselling were 145 mm, and during mouldboard processing 122.6 mm. Thus, chisel tillage for spring barley creates the best conditions for moisture supply and guarantees a high level of grain yield and significant profitability of production.","PeriodicalId":43089,"journal":{"name":"Acta Technologica Agriculturae","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2024-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140435242","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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