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The aim of the study was to select willow varieties the most and the least attractive as a food source to pests. Three willow varieties were chosen: Turbo, Start and Kortowska. They characterized with diverse attractiveness. Start was attacked the most often and the plants belonging to Turbo variety had their leaf blades the least damaged.
EN
The field experiment on willow cultivars was conducted in 2013 and 2014. The aim of the study was to determine the effects of weed infestation on yield of two willow varieties (Turbo and Start) and intercropping white clover and alfalfa on weed infestation. The loss of willow fresh weight caused by weeds varied from year to year and depended on variety of willow. Intercropping of bean plants significantly limited number and fresh weight of annual weeds in both years in comparison to control. Among the analyzed variants white clover addition caused the highest reduction of weeds.
EN
The field experiments with sugar beet were conducted in 2013–2015.The subject of study were evaluation of the impact of different crops on weeds in sugar beet crop in next growing seasons. The following agricultural crops: spring wheat and oats were sown in an amount and recommended period for their cultivationin spring in 2013 and 2014 year.On experimental plots were not used any chemical protection against weeds. Growing weeds in the field were controlled by a mechanical method - harrowing. In the next season on a singled part of the field the sugar beet varieties Danuśka and Telimena were sown. The assessment of weed infestation was performed by framing method estimation of number and fresh weight of weeds. There was no significant effect of cropping spring wheat and oats to reduce the number and fresh weight of weeds. Reduction of weeds infestation influenced favorably on growth and development of sugar beets crops.Weeds had the larger impact on the growth and development of varieties characterized by less leafage (Danuśka) than the standard cultivar (Telimena).
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