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Charakteristika nových hybridů silážní kukuřice
Stejskalová, Šárka
This bachelor thesis focuses on the characteristics of early maturing corn silage hybrids from the VP AGRO company. The selected hybrids were compared according to the yields of the green matter (t/ha), dry matter (t/ha and %) and according to the price level of seeds (Kč/SU). The data were collected from field trial records that took place between 2011 and 2022. These field experiments took place in the Czech potatoe agricultural sector in the Vysočina region at the following stands: Bobrová, Častrov, Horní Krupá, Okrouhlička, Počátky, Pohled, Pozovice, Radostín, Stonařov and Věž. Twelve hybrids were selected for the purpose of the study. The hybrids were subsequently divided according to the year of registration in the Czech Republic, followed by their detailed description and analysis. Based on the collected data, the following results were found. The total yields of green matter for all hybrids showed very similar and high values (50 t/ha). On the contrary the results of dry matter yields differed for each hybrid (16–18 t/ha). Additionally, similar fluctuations of dry matter in percent (34–38 %) were found. This high level of percentages of dry matter was caused by climate, soil conditions and different properties of individual hybrid. Regarding the economic comparison, the rising trend of the price level was confirmed, as is the case in the entire national sector. Seed prices have been affected by climatic, socio, political, and economic changes. One of the reasons for the price increase proved to be bad weather conditions (drought) in France, the state where the selected hybrids are bred.
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The influence of water deficiency on selected fodder crops
HRDA, Lukáš
The aim of this thesis was to assess the effect of the water deficit on selected species of perennial fodder crops ? grass and clover, as well as annual fodder crops, by comparing different species in conditions of changing climate and increasing extreme weather events, especially drought. Assesssment was based on comparing different literature and Internet data. Among the clover the following were evaluated as prospective for growing in dry weather - Onobrychis viciifolia, Lotus corniculatus, Medicago lupulina and Melilotus albus. Among the grass Festuca arundinacea and Bromus inermis proved to resist drought the best. Among the annual fodder crops Sorghum vulgare best resisted drought. In dry weather using grass and clover mixtures, which reach more balanced yields than some monocultures, proved to be more suitable. More attention should be paid to the issue of drought resistance because in the future such crops and species will be required that prove higher abiotic stress resistance, especially drought resistance.
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