Plevele ozimé pšenice a technologie pěstování

The aim of this thesis was to evaluate the occurrence of weeds in the winter wheat field at the field experimental station in Žabcice, depending on the technology of cultivation and on the preceding crop being cultivated. Weed infestation was evaluated using a numerical method on an area of 1m2. As a variant of soil preparation, conventional, minimizing and direct sowing technologies were used. Preceding crops for winter wheat were alfalfa and maize for silage. The evaluation took place in the years 2017-2018. The statistical processing of the evaluation of the number of individuals of all species in the winter wheat field was performed using the Statistica.cz computer software. In order to determine the effect of the observed factors on the weed species which occurred in the field experiments, multivariate analysis of ecological data was performed by using the Detrended Correspondence Analysis (DCA). In addition, Redundancy Analysis (RDA) and Canonical Correspondence Analysis (CCA) were used. The results show that cultivation technology and preceding crops affect weed species spectrum