Analýza zaplevelení porostů polních plodin a meziplodin ve vybraném zemědělském podniku

This thesis is focused on analysis of weed species in selected crops and covercrops in selected agricultural company. In field conditions were analysed species and numbers of weeds in winter wheat and cover crop formed by Sinapis alba and Phacelia tanacetifolia. Data were statistically processed on the basis of Lengths of Gradient analyzed with Detrended Correspondence Analysis. Following redundancy analysis (RDA) was performed in Canoco 5.0. Absolute values of weed species were in winter wheat. The most common weed species in winter wheat were Papaver rhoeas, the Thlaspi arvense, Descurainia sophia and Galium aparine. Capsella bursa-pastoris was the main weed in the cover crop. Similar frequency in winter wheat as well as in cover crop had Atriplex patula, Stellaria media or Tripleospermum inodorum. Reductive function had cover crop on Veronica persica and Viola arvensis