Tartary buckwheat Fagopyrum tataricum (L.) Gaertn. is second cultivated species from genus buckwheat. The aim of this work was to evaluate the influence of place of growing on buckwheat production and to describe relationships among individual plant parts of tartary buckwheat. In this work weight of thousand of tartary buckwheat achenes, their total production per a plant and per area, plant number per area, plant high, number of branches, inflorescences and leaves per a plant in the fertilized, hoed and control variant was evaluated. Mean weight of roots, inflorescences, achenes, whole plant were also determined. Correlations were statistically evaluated between selected parameters. The biological yield of tartary buckwheat reached 16 t/ha dry matter and the real yield of achenes 2,9 t/ha. We can recommend application nitrogen fertilization (50 t/ha) despite statistically non significant influence of this factor.