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Využití bezpilotního průzkumu pro cílenou aplikaci herbicidních látek
Panteleev, Evgeny
The thesis "the use of unmanned Exploration for targeted application of herbicides" is focused on the analysis of land data using unmanned Exploration for the following application of herbicides. The theoretical part of the thesis contains a description of common methods for assessing the state of stands in the form of remote sensing. And then it deals with sub-methods, herbicides and drones. The practical part deals with a semi-operational field experiment in the locality of Letkovice. The content includes the results of field and remote sensing, analyzed data from GIS and results of field experiments focused on variable applications of herbicides. And gave an economic comparison of uniform and variable methods of management.
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Vliv technologie pěstování kukuřice seté na množství organického uhlíku v půdě a kvalitu půdní organické hmoty
KADLEČEK, Ondřej
The aim of the diploma thesis entitled "Influence of maize cultivation technology on the amount of organic carbon in the soil and the quality of soil organic matter" was a comparison of quantity and quality non - humidified soil organic matter in various maize cultivation technologies. The work included not only literary research, but even field experiment, thus regular soil sampling, their processing and subsequent analysis. The theoretical part was focused on growing corn in the conditions of the Czech Republic, description, division and importance of soil organic matter, methods for determining its quality and quantity. The practical part dealt with the establishment of a field experiment of maize, soil sampling, their processing and analysis. The obtained values were used to determine the amount and quality of the primary soil organic matter, which was expressed by the rate constant of its oxidation. The obtained data were statistically evaluated in the program STATISTICA 12. The effects of sampling dates, weed control methods and fertilization variants on various soil characteristics were determined.
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Biology and control of weeds in root crops (Solanum tuberosum Wild.)
SAMOHEJL, Petr
In the theoretical part, agricultural techniques in the cultivation of potatoes were described and selected weed species were characterized, those that cause damage not only regarding root crops. Chemical protection is currently considered to be an important and most represented method for the regulation of weed species. It resides in the use of plant protecting herbicide products to limit the population of weed species below the economic hazard threshold. The practical part of the bachelor's thesis is focused on monitoring the biology and regulation of weeds in the cultivation of root crops (Solanum tuberosum Wild.). On an experimental plot of land managed by the Samohejl family near the village of Malešice (district České Budějovice) in the South Bohemian Region. Three potato varieties (Adéla, Belana, Marabel) and three different herbicides (Arcade 880 WG, Mistral and Sencor Liquid) were compared and the yield of tubers of cultivated potato varieties was monitored at the same time. The results showed that the effect was different for each herbicide. Due to their active substance (metribuzin), the small effect of these products was manifested on sow thistle and creeping spider. As a secondary result, the yield of tubers of individual varieties of potatoes in different treatments was monitored, when individual varieties responded to different herbicide treatments and thus provided different yields in these cases.
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Způsoby regulace plevelů při pěstování kukuřice seté (Zea mays L.).
VLÁŠKOVÁ, Milena
Corn is an important crop that is increasingly being applied and expanded in our countries. Due to the cultivation technology, weeding can significantly affect its yield. Weed control is mainly solved by the use of herbicides. One of the main objectives of this method is to achieve maximum effect at minimal economic cost. At the same time, the factor of minimizing negative effects on the environment is increasingly taken into account. The thesis describes the basic characteristics of maize, its basic agrotechnics and the extent of its cultivation in the Czech Republic. The basic characteristics and weed distribution are described, including the possibilities of their control. The actual work deals with the effectiveness of two combinations of herbicides used postemergence on land with different maize hybrids and evaluation of their effectiveness with regard to economic aspects.
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Weed control in minimal soil cultivation
CHENÍČEK, Ondřej
This work monitored weeds in three variants of soil cultivation. In three fields was used different variants of soil cultivation, first of them used disc stubble plough, second of this used stubble plough and third variant used classic plough. In this field test was monitored weedy in single years. In first years was be minimal soil cultivated variants more weedy then classic cultivated variant. In next years weedy go down.
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Determination of germination of selected weed species
CHYLIKOVÁ, Zdeňka
This bachelor´s work is created in the theoretical part by biology, occurrence, spreding, agricultural meaning and regulation of Lambs quarters, Common poppy, Cleavers, Canada Thistle, Perennial sow thistle. By this weeds were determinated the laboratory germination capacity in two options of temperature mode in the practical part. Seeds all the species proved higher germination capacity by the 22 °C except seed Perennial sow thistle.
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Biology, presence and methods of weeds regulation on a land planted with permanent grasses.
ONDRÁK, Aleš
This thesis is aimed at biology, presence and methods of weeds regulation on a land planted with permanent grasses. Lately, ruderal weed species have been spreading uncontrollably throughout the lawns. It is very difficult to control their occurrence and also very economically challenging. Therefore, the farms should focus more on the possibilities of preventing excessive weed infestation and they should also define and apply the cheapest and the most favorable precautions. On the grassland, which belongs to the ZD Třebelovice, were observed the most abundant weed species. The weeds which occurred the most were: Taraxacum Officinale, Rumex Obtusifolius L, Ranunculus Repens L., Geranium Pratense L., and Urtica dioica L. The influence of the individual hay cuts on the occurrence of the chosen weed species was monitored. The influence of various herbicides was also the matter of observance. The componential task was to appraise the achieved effect after applying chosen herbicides on the weed species.
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Contribution to the plasticity of barnyardgrass (Echinochloa crus-galli (L.) PB) in the saltI contamined soil
Šerá, Božena ; Gajdová, Iveta ; Nováková, Markéta
Barnyardgrass (Echinochloa crus - galli (L.) PB) is one of the major weeds, growing especially in the warmer parts of our country. This species was repeatedly found about different types of communications during a research of vegetation along roads and highways. Probably, the species has wide niche that allows it to exist even in adverse conditions, e.g. salt-contaminated area along roads. The aim of the study was to confirm that barnyardgrass can grow successfully in the salted substrate and how concentration of NaCl may inhibit its growth. Growing tests were carried out in a cultivate room on young plants which were grown in standard soil substrate with added sodium chloride (NaCl: 0.00 %, 0.12 %, 0.25%, 0.50%, 0.99 %, 1.96 %). The study found a successful growth of under- and aboveground biomass in substrates with lower concentrations of NaCl (to 0.50 %). In the substrate from concentration of 0.99 % a significant decrease of dry biomass and production of both under- and aboveground organs were found. Plant growth under different salinity stress is discussed in more detail in the text.
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Biology, occurence and regulation possibilities of Viola arvensis Murray in grown plants
MACHÁČEK, Václav
This thesis concerns on biology, occurrence and especially, herbicide regulation of Viola arvensis Murray on arable land. On the land of the farm DZV NOVA Bystřice a small-plot experiment focused on monitoring and regulation of Viola arvensis was carried out. This experiment was carried out from September 2012 to January 2014 on three crops (winter wheat, winter barley and winter rape) in three locations. In the theoretical part we describe the biology and occurrence of this frequent weed. The aim of the thesis was to evaluate the abundance of Viola arvensis and other weed species and verify the effect of different herbicides on Viola arvensis and other weeds. The effectiveness of the tested herbicide combinations was statistically significant for Viola arvensis and also for the other weeds (P 0, 05). The exceptions were Veronica persica, Geranium pussilum and Hordeum vulgare, where the effectiveness of these agents was not proved (P > 0, 05). The results summarize the numbers of weed species and effectiveness of applied herbicides. Viola arvensis was the most frequent weed species found on the examined sites. The effectiveness of herbicide agents used against this weed was very high. The highest was by preparations Maraton + Glean 75 WG, Maraton + Logran 20 WG, Cougar Forte + Logran 20 WG a Sumimax + Glean 75 WG (100 %). Lower was by preparations Butisan 400 SC + Command 36 SC (80 %) a Butisan Star + Garland Forte (75 %). In the winter barley and winter wheat, the applied herbicides were 100% effective, only in the winter rape the effectiveness was lower (75 - 80%). I can confirm the initial hypothesis about the effectiveness of the different herbicides on field pansy because their effectiveness differed.
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The control of weeds in maize stand (\kur{Zea mays L.})
VANĚK, Robert
Some of weeds have disappeared owing to the plant production specialization; some of them have become more resistive. Those weeds have taken significant role due to its danger and frequency of presence. The thesis is mainly focused on description of biology and morphology of weeds, possibilities of weeds spread and weed control. Methods of mechanical and chemical regulation are described based on these facts. The experiments, which were carried on maize, determined the effect of selected herbicide and its active substance on weed control. Following precautions, which were suggested, have led to successful suppression of specific significant weeds.
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