National Repository of Grey Literature 23 records found  1 - 10nextend  jump to record: Search took 0.01 seconds. 
Vliv změny tlaku v trakčním válci pluhů na zatížení hnacích kol traktorů
Opluštil, Jakub
The first part of the bachelor thesis is focused on the description of the construction of the plows and their current state. The second part of this bachelor thesis was to analyze the influence of the traction roller on the output parameters of the plowing unit based on field measurements. In the practical part of this work, a field measurement is processed, it was carried out in order to evaluate the use of the traction hydraulic cylinder on the plow. For a measurement it was used a tractor Zetor Forterra 150 HD in a set with a Pöttinger SERVO 45 M PLUS plow. The tractor was weighed in combination with the plow before the actual field measurement started. The weighing took place on walk-in scales. The axles were weighed as follows: front axle, rear right and left wheels separately, plow support wheel. It was measured in two variants, with a plow width of 1,6 m and 2 m. Furthermore, the measurement depended on the position of the set, which was in one case on a plane and in the other on an inclined plane. The tilting of the tractor was simulated on the scales, which was supposed to represent the driving of the tractor during the plowing to the right, the left wheel of the tractor and support wheel of plow were lifted by 20 cm. When the distributor of the external hydraulic circuit is in the floating position, there is zero pressure in the traction cylinder. There is no load transfer from the plow to the tractor. The weighing was based on three groups of measurements. In the first stage it was 0 bar, in the second 100 bar and the last 150 bar in the traction cylinder. As the pressure gradually increased, the tractor axles were loaded and the load on the support wheel was relieved. For a simpler representation, the obtained values were rewritten into images and drawn into graphs for comparison. The results obtained during weighing were compared with the results of individual wheel loads during actual plowing. By increasing the pressure in that the traction cylinder equalizes the load on the rear wheels moving in the furrow and on the bed. This fact was reflected in the output parameters of plowing.
Concept of the rotary harrow
Moštěk, Michal ; Fajkus, Pavel (referee) ; Kašpárek, Jaroslav (advisor)
The bachelor's thesis deals with the design of a rotary harrow. In the beginning of the thesis, a short research is written regarding soil cultivation. Rotary harrows and tractors in the corresponding power series are listed in the next chapter. In the next part of the work, individual components are described and their selection is justified. The construction of individual components is described in a separate chapter. The rotary gate is designed with a three-point hinge cat. 2N/2. In the last part of the work, the strength calculation of the gears, the basic durability of the rotor bearings and the inspection of the shaft of the bearings is carried out. Calculations are made according to standards. The work includes drawing documentation and images of the 3D model.
Produkční a ekonomické hodnocení pěstování cukrovky při různých způsobech zpracování půdy
Chlebanová, Petra
Thesis deals with and evaluates the production and economic aspects of sugar beet growing. Thetheoretical part of the thesis contains a detailed characteristics of the crop, including environmental requirements, the inclusion of sugar beet in the sowing process, nutrition and treatment of vegetation, harvesting and storage. The first part of the thesis also characterizes the basic methods of tillage, but also modern technologies. Thesis describes ecosystem services and uses in the fields of phytoenergetics or biotechnology. The theoretical part concludes with chapters that deal with the issue of growing economics, legislation and approach the current state of the industry. The practical part deals with the evaluation of the influence of different tillage on qualitative parameters, such as yield or sugar content. The experiment was carried out at a field experimental station in Žabčice, as part of the AGRO 2 field experiment. Three variants of tillage were evaluated - conventional tillage, minimization technology and direct sowing in the years 2017 -2019.
Porovnání precizního a konvenčního zemědělství na daném pozemku
POSPÍCHAL, Tomáš
The bacherol's thesis examines the difference between conventional and precision agriculture in tillage and their impact on work efficiency. It focuses tillage methods, guidance systems, conventional and precision agriculture. The practical part of the work compares the impact of conventional and precision agriculture on fuel comsumption, area performance, prime and secondary time on given plot divided into two parts.
Porovnání exploatačních parametrů kotoučových a radličkových podmítačů ve vybraném zemědělském podniku
PROCHÁZKA, Miroslav
The aim of this diploma thesis is to approach the possibilities of processing agricultural land with a suitable type of cultivator. The professional part of the work captures different types of tillage and introduces the types of cultivators. The practical part of the work is devoted to measuring the area performance and fuel consumption in soil preparation with a coulter and disc cultivator in the specific conditions of an agricultural enterprise in the Czech Republic. Evaluates the measurement results and presents conclusions for practice.
Porovnání konvenčního zpracování půdy a přímého setí Väderstad Tempo F-8
VINCÍK, Matěj
This bachelor thesis deals with the comparison of conventional tillage technology and direct sowing technology. It describes the operations associated with each technology and the appropriate machines to use. The financial and revenue aspects are mainly used for comparison. The financial ones consist of the cost of fuel for working 1 ha of land and the cost of the employee's salary for processing 1 ha of land. Yield is measured by weighing the harvested material from land processed by conventional technology and weighing the harvested material from land processed by direct sowing.
Opakované porovnání konvenčního a minimalizačního zpracování půdy
POLAN, Tomáš
The diploma thesis deals with soil treatment procedures and contains individual options and describes their advantages and disadvantages. It focuses on two technologies, which are compared in terms of fuel consumption, the time required to perform work operations and the condition of the crop. This is a follow-up to a previous bachelor's thesis on the same topic. The results of both experiments and annotated aspects that influenced the experiments are described.
Porovnání orebného a bezorebného zpracování půdy
BARTOŠ, Jiří
The bachelor's thesis deals with the most commonly used tillage technologies today and the impact on soil compaction. It also focuses on measures against unwanted compaction and its subsequent removal. Describes basic work operations such as plowing and loosening the soil. The bachelor's thesis describes the principle on which plowing works, basic types and distribution of plows, possible equipment of plows and according to which plowing can be divided. Furthermore, the methods of plowing, on different types of land, under conditions. Last but not least, the advantages and disadvantages of the most common tillage are listed here. Furthermore, the loosening technology, the machines with which the soil can be worked and the advantages and disadvantages of the tillage technology without plowing bring here. The experiment performed for the purpose of the bachelor's thesis is focused on the comparison of plowing and no-till technology of soil processing from an economic point of view and within the possibilities of verifying the impact on soil condition, stand condition, harvest and environment.
Effect of different soil preparation on yield parameters of winter oilseed rape
TOMÁŠEK, Václav
This thesis deals with the issue of growing oilseed rape (Brassica napus L.) with using various technology of tillage. It is divided into two main parts. The first part includes literary overview witch deals with basic information about oilseed rape ant than with overview about technology of tillage. The main part of thesis is evaluation result of two years small-plot experiment from 2017/2018 and 2018/2019. This experiment was founded on the lands of Agricultural Farm VETO s. r. o. in the village Veselíčko near the city Písek. To the experiment was integrate four varieties. It was Mazari CS, Atora, PT234 and PX113. Each variety was sown in three kinf od variants of tillage. Variant with shallow tilage, variant with plowing and variant with deep tillage. All sown variant were repeated in four times. In the experiment was monitored influence of tillage to rapeseed yield, and also some yield elements like weight of thousand seeds, percentage of oil, number of fplants per square meter and number of pods per plant and root neck thickness. Higher yields were achived in 2018 when the average yield of all lands was 5,63 t/ha which in 2019 dropped to 3,80 t/ha. Influence of tillage on seed yield was worse in 2019 because this year had less precipitation. In this year was the best option with deep tillage. In conclusion, we can say deep tillage has positive effect, especially in drier years.
Vliv technologie pěstování cukrové řepy na množství a kvalitu půdní organické hmoty
NOVÁKOVÁ, Aneta
The diploma thesis is focused on monitoring the content of soil organic matter and its quality in two variants of samples. The main goal of this thesis is to analyze and compare the values of soil samples taken in the sugar beet using two different variants of agrotechnical interventions - mechanical weed control with loosening and a variant using pesticides without loosening. Sampling took place near the village of Úhřetická Lhota in the Pardubice Region. The samples were processed in the laboratory and after their analysis the monitored parameters of quantity and quality of soil organic matter were determined: CPPOH - carbon of primary soil organic matter, CSOF - carbon of stable organic fractions, Corg - total organic carbon, constant k - quality indicator of primary soil organic matter

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