The aim of the research included the increase in the yield capacity of beetroot in the right-bank Forest-Steppe of Ukraine by selecting of high-yielding varieties and hybrids of foreign selection. The experimental part of the research was conducted in 2011–2012 on the experimental field of the Department of Vegetable Growing of Uman National University of Horticulture. The Harold (USA) and Detroit (France) varieties were investigated. The Hopak variety (Ukraine) was served a control one. The Zeppo F1 variety (Netherlands) was a control Boro F1 and Pablo F1 hybrids (Holland). The sowing was performed during the second decade of April according to the scheme 45×10 sm (222,2 thousand pcs./ha).Technological works were carried out according to the requirements of the growth and development of beetroot. The yield was harvested in the first decade of October and sorted according to the requirements of the 7033:2009 «Beetroot fresh. Technical conditions National Standard of Ukraine» according to the phenological observations and characteristic of varieties and hybrids.

The early ripen varieties include Boro F1, Pablo F1, Zeppo F1 and Harold. During the beam ripeness phase a domestic variety of Hopak (control) had larger number of leaves. The crops of Detroit variety formed 11 leaves less. The number of leaves of the hybrids was 20–27. Zeppo F1 hybrid (a control variety) had higher number of leaves, and Boro F1 hybrid – lower. In technical ripeness phase the crops of the Hopak variety and Zeppo F1 hybrid formed more leaves – 15 and 12 pieces respectively.

The length of the leaf plate in the beam ripeness phase was larger in the varieties and amounted to 19,3–20,6 sm, whereas in the hybrids the length was 15,6–16,5 sm. A similar trend was observed in the phase of technical ripeness of the roots. The average weight of leaves made 22,3-28,5 % of the total weight of the crop in the phase of beam ripeness– 10,6–16,2 % in technical ripeness phase.

The total yield capacity was 38,8–63,5 tons/ha. The cultivation of the varieties allowed us to obtain 48,0–52,2 tons/ha of production. The Harold variety was more yielding. The hybrids provided 38,8–63,5 tons/ha of roots and Boro F1 was the best one – 63,5 tons/ha. The total yield capacity was divided into the product and non-product. Among the varieties Hopak (control) formed less amount of marketable roots – 41,3 tons/ha with the marketability of 86,2 %. Larger amount of marketable products output was observed in the Harold variety – 47,2 tons/ha with 90,3 % marketability of the roots. Zeppo F1 hybrids (control) had lower indexes – 36,3 tons/ha in the cultivation however, the marketability of the roots was 93,6 % Boro F1 Hybrid had higher yield – 56,2 tons/ha with the roots marketability of 88,5 %.

According to the average data of 2011–2012 the Harold variety formed larger weight roots – 240 g, and the control variety had lower indexes – 220 g. The diameter of the roots was 8,5–9,2 sm and the Harold variety (control) had higher index. This index in Detroit and Harold varieties was at the same level and was 8,5 and 8,6 sm correspondingly. During the cultivation of the Boro F1 hybrids formed the roots of higher weight – 300 g, and hybrid Zeppo F1 (the controlled hybrid) had lower weight – 180 g. The diameter of the beetroots of the hybrids was of 8,8–9,6 sm on the average.

So, the investigated varieties and hybrids of the beetroot of foreign selection are can be used cultivation in the Right-bank Forest-Steppe of Ukraine. The processes of coming and passage of phenological phases of plants in hybrids were faster compared with the varieties. As for the biometric indicators in beam phase and technical ripeness larger indicators were determined in the varieties. During cultivation of the varieties beetroot yield capacity of increased in comparison with the controlled one by 5–14 %, which corresponds to 2,1–5,9 tons/ha. In the hybrids this indicator was 42–55 % and 15,3–19,9 tons/ha, accordingly. Harold Sort and Boro F1 hybrid had the best weight indicators.

Key words: beetroot, variety, hybrid, root, yield capacity.