INFLUENCE OF DIFFERENT TILLAGE SYSTEMS ON YIELD AND SELECTED QUALITATIVE PARAMETERS OF SUGAR BEET

The effect of varieties (Fox, Zenith) and variants of soil tillage have been observed on both the yield and technological quality of sugar beet in the field multi-factorial experiment (A - hay harvest, stubble ploughing, farmyard manuring, mean ploughing, deep ploughing, evening of soil surface; B - hay harvest, stubble ploughing, green manuring, deep ploughing, evening of soil surface; C - stubble ploughing with incorporation of hay, green manuring, deep ploughing, evening of soil surface). The highest root yield (65,52 t.ha-1) and polarised sugar yield (10,63 t.ha-1) was found on the variant B. The most significant digestion (16,46 °S) and refined sugar yield (14,27 %) was reached on variant C. In variety Zenith the highest yield of sugar beet roots (64,96 t.ha-1), digestion (16,51 °S), refined (14,43 %) and polarised sugar yields (9,93 t.ha-1) was found at given soil-climatic conditions.