Seven cultivars of common buckwheat were tested in field trials under two levels of nitrogen fertilisation on two experimen-tal sites during 1998–2000. The aim of the experiments was to evaluate the influence of cultivar, nutrition and year on main technological quality parameters (thousand achenes weight, volume weight, proportion of fractions on sieves 4.5 and 4 mm, proportion of husks and yield of groats). The differences were observed between buckwheat cultivars in all observed param-eters of technological value. Nitrogen fertilisation before sowing (50 kg.ha –1) did not influence any parameter. On the con-trary, buckwheat technological value was influenced by sequence weather (particularly rainfalls) during flowering and achenes formation periods (July). The influence of year was manifested especially on development of endosperm and husks of achenes. Better growing conditions on experimental site Uhøínìves caused lower values of volume weight, lower propor-tion of pericarp (husks) and considerably higher proportion of fraction over 4.5 mm.