No description available.

No description available.

The diploma thesis deals with the analysis of weed infestation of spring and winter cereal crops, where spring crops (Hordeum vulgare), oat (Avena sativa), winter barley (Hordeum vulgare) and winter wheat (Triticum aestivum) were subject to control. The theoretical part describes the harmfulness of weed species, which we encounter on agricultural land, followed by problems with their regulation. This issue is followed by growing technology of propagation stands. Of the found weed species in the propagation stands, they are particularly dangerous (Wild oat, Silky bent grass, Couch grass).

Four methods of grassland restoration on arable land using species-rich seed material harvested directly in the source Bromion meadows (Vojšické louky, Bílé Karpaty protected landscape area (PLA), Czech Republic) were compared. Species composition of established grasslands was evaluated through the vegetation development. The restoration methods comprised of i) green hay application, ii) sowing of seed mixture obtained from brush harvester collecting once in the vegetation period, c) sowing of seed mixture obtained from brush harvester collecting three times during the vegetation period per site and d) spontaneous succession were compared. The experimental plots were established in the surroundings of Malá Vrbka (Bílé Karpaty PLA) in 2009. Species composition and vegetation cover were recorded in 16 m2 plots in spring and autumn of 2010 and 2011. Altogether 144 releves were statistically analysed using direct (CCA) and indirect (PCA) gradient analysis; cluster analysis (Statistica for Windows), and Simpson, Jaccard and Sorrensen similarity coefficients. Species composition was significantly affected by the plot establishment period which explained 49.6% of variability in the species data set. Species composition was also affected by used restoration method. However, the restoration method had no significant effect on the plant species richness.

No description available.

No description available.

No description available.

No description available.

The thesis is focused on the problematics of stream-bank vegetation and it’s devided into two parts. First, analytic part, is focused on evaluating the condition of the stream-bank vegetation of Libochůvka river. Author defines methodology of its evaluation which is afterwards applied in field study. The result of analytic part is evaluation of actual condition of stream-bank vegetation and proposal the solution of identified problems. Second part, project part, is focused on proposing of specific solutions for the river section from 37,5 to 37,9 river km, which was identify as the worst one. This part is processed as complete project documentation, which was evolved in cooperation with river manager Lesy ČR, s. p.

The thesis if focused on monitoring and evaluation of microclimate and stand processes that take place in it. There have been measurements of temperature and humidity and monitored for the appearance of significant leaf and ear pathogens in crops of wheat and barley. The measured values were compared with values measured on standard climatological station for creating a regression model. They were created graphs of linear regression, which were used to determine the reliability of the crop depending on the climatological station. There were also created graphs showing changes in the differential temperature and humidity in stand and standard climatological station. The presence of harmful pathogens was compared with the measured data, and it was established that a certain course of the weather (in particular temperature and humidity) has an effect on the occurrence of the pathogen.