Under these conditions, it is important to investigate the growth and productivity of different hybrids of sugar beet after organic nourish sources. Therefore, the growth and yield of different sugar beet hybrids were investigated in crop rotation, where all crops are grown by nutrients of organic mass of sideline products of preceding crops, green-manured fallow and postharvest green manuring.

Analysis of the nutrition balance in the crop rotation shows that nitrogen, phosphorus and potassium in the soil layer of 0-60 cm is sufficient for implementation of the yield of water, which is obtained by crops, due to the precipitation and constant deposits of moisture in the lower soil layers (0-150-200 cm).

Hybrids of sugar beet were grown in the third field of six-field crop rotation. The preceding crop was winter wheat, which was grown on green-manured fallow. The amount of nitrogen after tillage of green manure crop in the soil layer of 0-40 cm (top + root mass) is 300-340 kg/ha, phosphorus 65-80, potassium 180-220 kg/ha. We don’t calculate the nitrogen that leave in the soil, nodule-forming  and associative bacteria. There are other sources of nitrogen. Wheat except of yield in crop rotation 60-65 hwt/ha, makes with grain 140-160 kg/ha, phosphorus 56-64, potassium 90-120 kg/ha. Nutrient status of sugar beet was sufficiently high. It is important to note, because the majority of farms that cultivate sugar beets on small areas due to the lack of funds does not have the possibility to use heavy rates of fertilizers. Such farms should use the optimum variants of organic and biological technologies broader, they need such hybrids of sugar beet, which would more fully use this organic background and natural potential of Ukrainian soil and would respond to the application of certain elements of modern technology of cultivation of this crop.

As a result of previous researches at the Department of Plant Growing of Uman NUH was used such optimized variant of technology of sugar beet growing: primary soil tillage consisted of wheat stubble ploughing with shredded straw by the disk harrow. The first tillage was carried out on the day of harvesting preceding crop, the second - after the germination of weeds. Plowing was done by plough with coulter on the depth of 24-26 cm. In autumn plough-land was aligned by cultivator.

During the vegetation, the determination of dynamics of root mass accumulation and sugar content of roots was conducted.

The most intensive root mass accumulation during this period was observed in hybrids Bilotserkivskyy MS – 57-78 g and Shevchenkivskyy – 99 g. Obtained data indicate that these hybrids accumulate mass in the second half of the growing season, which indicates their late maturity. Hybrid Umanskyy MS – 76 should be noted, which has stable increments of root mass regardless of its growing in different years.

The yield of hybrids depends on many factors, both agro technical and hereditary. During the creation of equal conditions of growing, genetic potential of hybrids created by domestic breeders is in the forefront.

On average for two years the highest sugar content showed hybrids Umanskyy MS – 76 and Slovyanskyy MS – 94 – 16.2 %. The lowest sugar content had hybrid Bilotserkivskyy MS –57 – 14.4%. Accordingly, during this period, sugar harvest amounted in hybrid Ukrainskyy MS –70 – 59.2 hwt/ha , Slovyanskyy MS – 94 – 56.8 , Umanskyy MS –76 – 57.1 hwt/ha.

On the basis of conducted researches we recommend maximal use the hybrids that are adapted to the appropriate growing conditions in Man’kivka Natural Agricultural District. These are hybrids Umanskyy MS – 76, Ukrainskyy MS – 70, Slovyanskyy MS – 94.

Key words: sugar beet, hybrid, crop capacity.