Acta Technologica Agriculturae最新文献_第8页

Study of Microclimate and Sapling Citrus Plant Transpiration in Tunnel Greenhouse Under Mediterranean Conditions 地中海条件下隧道温室小气候与柑桔幼苗蒸腾作用研究

IF 1.4

Acta Technologica Agriculturae Pub Date : 2022-06-01 DOI: 10.2478/ata-2022-0010

A. Bekraoui, H. Fatnassi, A. Kheir, Sanae Chakir, A. Senhaji, M. Mouqallid, H. Majdoubi

{"title":"Study of Microclimate and Sapling Citrus Plant Transpiration in Tunnel Greenhouse Under Mediterranean Conditions","authors":"A. Bekraoui, H. Fatnassi, A. Kheir, Sanae Chakir, A. Senhaji, M. Mouqallid, H. Majdoubi","doi":"10.2478/ata-2022-0010","DOIUrl":"https://doi.org/10.2478/ata-2022-0010","url":null,"abstract":"Abstract In Mediterranean basin, citrus culture is expanding rapidly with a growing demand for high-quality saplings. Protected cultivation with fine microclimate conditions control is the best process of citrus saplings growing with the required quality. In this context, the developed microclimate of a tunnel citrus saplings greenhouse and its effects on plant activity parameters, such as leaf temperature and transpiration, were investigated. The findings show that the temperatures of air and plant leaves inside the greenhouse are highly variable between 6 °C and 33 °C and from 8 °C to 30 °C, respectively. Results also show that greenhouse air humidity is very high – more than 80%. The analysis of plant transpiration based on greenhouse microclimate conditions and leaf temperature reveals that (i) plant transpiration varies throughout the day (between 1.9 and 65.7 mg m−2·s−1); (ii) leaf temperature simulation can be used as an indirect indicator of plant water stress; and (iii) the simulated temperature difference between the leaves and the internal air of the greenhouse can be used to define the minimum threshold air temperature for proper plant development under the greenhouse conditions.","PeriodicalId":43089,"journal":{"name":"Acta Technologica Agriculturae","volume":"25 1","pages":"61 - 66"},"PeriodicalIF":1.4,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48025955","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}

引用次数: 2

Transporting Ability Calculation of the Rotor of Soil-Cultivating Loosening and Separating Vehicle 耕土松动分离机转子输送能力计算

IF 1.4

Acta Technologica Agriculturae Pub Date : 2022-06-01 DOI: 10.2478/ata-2022-0012

Y. Syromyatnikov, A. Kuts, Irina Troyanovskaya, Alexandra Orekhovskaya, E. Tikhonov, V. Sokolova

{"title":"Transporting Ability Calculation of the Rotor of Soil-Cultivating Loosening and Separating Vehicle","authors":"Y. Syromyatnikov, A. Kuts, Irina Troyanovskaya, Alexandra Orekhovskaya, E. Tikhonov, V. Sokolova","doi":"10.2478/ata-2022-0012","DOIUrl":"https://doi.org/10.2478/ata-2022-0012","url":null,"abstract":"Abstract Currently, loosening and separating machines that combine the operations of crumbling and separating of soil according to the treated layer depth have come to the forefront. Interaction of the rotor blade of these machines with the soil comprises three stages: soil core formation; steady movement; and dumping of soil from the separating grid. The article determined the direction and magnitude of soil displacement, parameters and shape of the furrow formed after the ripper passage. Based on theoretical research, a mathematical model of the interaction of working bodies with the soil was developed. The initial data were obtained experimentally, and the model was justified. As a result, it was found that the supplied soil layer thickness and the fracture angle of ripper have the greatest influence on the transporting capacity of rotor ripper. Reducing the rotor blade entry angle into the soil from 45° to 30° made it possible to raise the second soil feed of the loosening and separating machine by more than 40 times. The width of rotor ripper practically does not affect the transporting capacity. Changing the angle of ripper entry into the soil allowed obtaining of the required transporting capacity of ripping and separating machine without changing the rotor design. Practical significance of the study lies in the possibility of increasing the work productivity without increasing its energy indicators.","PeriodicalId":43089,"journal":{"name":"Acta Technologica Agriculturae","volume":"25 1","pages":"73 - 78"},"PeriodicalIF":1.4,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46142436","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}

引用次数: 3

Influence of Zinc Coatings Mechanical Pre-Treatments for the Formation of Environmentally Friendly Passivation Duplex Anti-Corrosion Systems 锌涂层机械预处理对环境友好型钝化双相防腐体系形成的影响

IF 1.4

Acta Technologica Agriculturae Pub Date : 2022-06-01 DOI: 10.2478/ata-2022-0009

Jaroslav Lozrt, J. Votava, Radim Šmak, A. Polcar

{"title":"Influence of Zinc Coatings Mechanical Pre-Treatments for the Formation of Environmentally Friendly Passivation Duplex Anti-Corrosion Systems","authors":"Jaroslav Lozrt, J. Votava, Radim Šmak, A. Polcar","doi":"10.2478/ata-2022-0009","DOIUrl":"https://doi.org/10.2478/ata-2022-0009","url":null,"abstract":"Abstract The paper content is focused on the various evaluation methods of mechanical pre-treatment of hot-dip galvanized surface performed in order to increase the organic paint adhesion (both synthetic and waterborne). Emphasis was placed on low volatile organic compounds (VOC) values in coating systems. Corrosion degradation of the tested coatings was also monitored. The mechanical surface pre-treatment was performed using a standard technology, so-called sweeping, with synthetic corundum with F40 grain size (these samples served as a standard). Alternative methods that can be used in operations without blasting equipment were also investigated. These included regrinding with two different grain sandpapers (P40 and P100) and regrinding with a corrosion resistant steel brush (wire diameter 0.3 mm). The surface texture was evaluated in accordance with the ČSN EN ISO 4287 standard. Corrosion-mechanical resistance was evaluated by a pull-off adhesion test (according to the ČSN EN ISO 4624 standard) and in a salt spray environment (according to the ČSN EN ISO 9227 standard). Based on the obtained results, mechanical pre-treatment with a corrosion resistant steel brush and possibly P100 grit sandpaper can be recommended, as pre-treatment with these tools showed statistically the best corrosion-mechanical properties.","PeriodicalId":43089,"journal":{"name":"Acta Technologica Agriculturae","volume":"25 1","pages":"53 - 60"},"PeriodicalIF":1.4,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44457384","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}

引用次数: 3

Multi-Temporal Detection of Agricultural Land Losses Using Remote Sensing and Gis Techniques, Shanderman, Iran 基于遥感和Gis技术的农业土地流失的多时相检测，shananderman，伊朗

IF 1.4

Acta Technologica Agriculturae Pub Date : 2022-06-01 DOI: 10.2478/ata-2022-0011

Fatemeh Rahimi-Ajdadi, M. Khani

引用次数: 0

Sizes of Soil Chip Cut By a Continuously Operating Planting Hole Digging Machine with an Active Tillage Unit 带主动耕作装置的连续作业植孔挖土机所切出的土屑尺寸

IF 1.4

Acta Technologica Agriculturae Pub Date : 2022-06-01 DOI: 10.2478/ata-2022-0013

H. Beloev, N. Long, Dau The Nhu, N. D. That

{"title":"Sizes of Soil Chip Cut By a Continuously Operating Planting Hole Digging Machine with an Active Tillage Unit","authors":"H. Beloev, N. Long, Dau The Nhu, N. D. That","doi":"10.2478/ata-2022-0013","DOIUrl":"https://doi.org/10.2478/ata-2022-0013","url":null,"abstract":"Abstract Planting hole digging is a minimal tillage method, which is beneficial in terms of reducing energy consumption and preventing erosion. Current popular planting hole diggers work intermittently, which results in low productivity. A continuous-operating hole digging machine with an active tillage unit can solve this issue. However, the theoretical basis for this type of digger has not yet been developed; this is also true for the issue of determining the chip thickness – one of the main technical characteristics which significantly influences energy and agrotechnical indicators of active soil tillage. This paper presents research results of determining the soil chip cut thicknesses and observing of new cutting surface under a continuous operation of hole digging machine with an active tillage unit. At the same time, impacts of factors such as the number of knives and the kinematic factor on soil chip sizes are studied. The soil chip size determination and investigation of influence of kinematic and structural parameters on it is conducted via numerical simulation using MATLAB software. The key factors include kinematic factor λf and the number of knives on one cross-section of the tiller’s rotor Z. When λf and Z increase, the maximum average thicknesses decrease gradually; and vice versa, the new specific cutting surface decreases almost linearly. The results are considered a basis for the selection of final parameters for the construction and operation of one machine to meet agronomic requirements.","PeriodicalId":43089,"journal":{"name":"Acta Technologica Agriculturae","volume":"25 1","pages":"79 - 84"},"PeriodicalIF":1.4,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48235595","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}

引用次数: 2

Studies on Mahua Oil Biodiesel as the Sustainable Fuel in Compression Ignition Engine 麻花油生物柴油作为压缩点火发动机可持续燃料的研究

IF 1.4

Acta Technologica Agriculturae Pub Date : 2022-06-01 DOI: 10.2478/ata-2022-0014

N. Kapilan, Sadashiva Prabhu S

引用次数: 1

Analysis of Selected Data from Robotic Milking Regarding to Heat Stress of Dairy Cows 机器人挤奶对奶牛热应激的影响分析

IF 1.4

Acta Technologica Agriculturae Pub Date : 2022-06-01 DOI: 10.2478/ata-2022-0015

Š. Boďo, Gabriel Lüttmerding, R. Gálik, P. Kunc, I. Knížková, G. Gürdil

{"title":"Analysis of Selected Data from Robotic Milking Regarding to Heat Stress of Dairy Cows","authors":"Š. Boďo, Gabriel Lüttmerding, R. Gálik, P. Kunc, I. Knížková, G. Gürdil","doi":"10.2478/ata-2022-0015","DOIUrl":"https://doi.org/10.2478/ata-2022-0015","url":null,"abstract":"Abstract The paper presented is dedicated to investigation of the temperature-humidity index (THI) and its impacts on the performance parameters of dairy cattle. These parameters were recorded at four farms in the central Slovakia; the experiments took place three years. These parameters comprised milking time, time spent in the milking box, and connection time. The THI was calculated according to the standard formula and individual periods were established on the basis of achieved THI values. The results showed that the milking time and the time spent in the milking box were not reduced when the THI ranged from 68 to 71, with a daily milk yield of 28.96 kg. If the THI exceeded 72, the milking time and the time spent in the milking box were shortened, which was statistically confirmed. However, even with a daily milk yield of 31.27 kg, a reduction in the milking time and time spent in the milking box was reduced. This was caused by the THI higher than 68, which was also statistically confirmed. Based on the results obtained, the dairy cows respond to heat stress by reducing the milking time and reducing time spent in the milking box.","PeriodicalId":43089,"journal":{"name":"Acta Technologica Agriculturae","volume":"25 1","pages":"92 - 96"},"PeriodicalIF":1.4,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41360380","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}

引用次数: 2

Drawbar Performance of Tractor Tyres with Steel Spikes At 100%-Wheel Slip 带钢钉的拖拉机轮胎在100%车轮打滑时的牵伸性能

IF 1.4

Acta Technologica Agriculturae Pub Date : 2022-06-01 DOI: 10.2478/ata-2022-0016

R. Abrahám, Tomáš Zubčák, R. Majdan, K. Kollárová, Eva Matejková, S. Masarovicová, R. Drlička

引用次数: 1

Design and Assessment of a Small-Scale Machine for Cleaning Wheat Grains 小型小麦清粒机的设计与评价

IF 1.4

Acta Technologica Agriculturae Pub Date : 2022-03-01 DOI: 10.2478/ata-2022-0003

Mohamed Abu Ali, Eid Abd El-Rahman, Gamal El-Deen Nasr

引用次数: 2

Influence of Biodiesel on Performance of Machine-Tractor Units 生物柴油对机拖拉机机组性能的影响

IF 1.4

Acta Technologica Agriculturae Pub Date : 2022-03-01 DOI: 10.2478/ata-2022-0002

V. Nadykto, P. Findura, V. Kyurchev, Oleksander Orel

{"title":"Influence of Biodiesel on Performance of Machine-Tractor Units","authors":"V. Nadykto, P. Findura, V. Kyurchev, Oleksander Orel","doi":"10.2478/ata-2022-0002","DOIUrl":"https://doi.org/10.2478/ata-2022-0002","url":null,"abstract":"Abstract Currently, liquid biofuels, and especially biodiesel, are increasingly used. In terms of agricultural production, there arises an urgent question whether utilization of biofuels in agricultural tractors is feasible and efficient. Majority of results regarding the biodiesel use comes from bench tests of engines. However, work of any machine-tractor unit under real conditions, except for the steady-state mode of movement, includes acceleration mode after a turn, or after it was forced stop in the field. It has been established that the addition of sunflower methyl ester (SME) into conventional diesel (CD) leads to a decrease in the throttle response of a tractor engine during its field operation. Using 50% CD and 50% SME as fuel mixture, the tillage machine-tractor unit’s acceleration time increased by 16.6%. Operating on SME only, the unit’s acceleration time reached 50%. The acceleration process of a machine-tractor unit using fuel with addition of SME is non-linear. It consists of two parts: more intensive − with SME content in diesel fuel of up to 50%, and less intensive − with an increase in SME proportion over 50%. When using a mixture of CD with SME in a ratio of 50 : 50, the soil cultivation machine-tractor unit performance decreased by 7.2%, and fuel consumption per tilled area increased by 5.3%.","PeriodicalId":43089,"journal":{"name":"Acta Technologica Agriculturae","volume":"25 1","pages":"7 - 12"},"PeriodicalIF":1.4,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47984983","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}

引用次数: 3