In three-year field trials the effect of row covering with early potatoes on selected factors of tuber quality was evaluated. Experiments were conducted the Přerov on Labem locality in the Czech Republic with Adora and Impala potato cultivars. On the basis of statistical analysis of the results it is evident that row covering with the fleece 60 days after planting positively influenced dry matter content in tubers, but did not affect the content of polyphenols, nitrate and ascorbic acid.