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The aim of this thesis was to determine the harmfulness of weeds in different terms of agricultural technologies in winter wheat. The evaluation was carried out before the application of herbicides in 2014 (Žabčice, corn production area). Soil tillage was processed in three variants. The first variant was the conventional tillage (ploughing). The second was minimum tillage and the third variant was represented by direct sowing. Another factor influencing weed infestation of winter wheat was previous crop (alfalfa and corn). The obtained data were statistically evaluated. Results imply, that the combination of crop and tillage affect the occurrence and number of particular weed species. Findings also show, when wheat is growing after alfalfa, the potential loss of yield has the highest value within a direct sowing, followed by a minimum tillage and the lowest value within a traditional tillage. Determination of differences in potential loss of yields of winter wheat is not clear after growing corn. |
