WPŁYW PRZEDPLONÓW ZBOŻOWYCH NA ZACHWASZCZENIE UPRAW BURAKA CUKROWEGO

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).