THE INFLUENCE OF SUGAR BEET FERTILIZATION SYSTEM ON THE PRODUCTIVITY OF SHORT-TERM ROTATION OF CROP SUCCESSION

Abstract

Applying fertilizers under sugar beet and other crops of the rotation system increases not only their yields, but also positively influences the general productivity of crop rotation. However, there are not enough data concerning the impact of sugar beet fertilization system on general productivity of short-term rotation of crop succession in the zone of insufficient moistening. That is why it is important to conduct the corresponding re-search the aim of which is to determine the impact of sugar beet fertilization system on general productivity of short-term rotation of crop succession. The task of the investigation was to study the impact of different doses of organic and mineral fertilizers applied under sugar beet on its productivity and technological qualities of roots; study the aftereffect of various fertilization systems used during sugar beet cultivation on the yield, feed units, digestible protein and estimated sugar amount per 1 hectare of short-term rotation of crop succession. The corresponding experiments were conducted during long-term permanent experiment at Veselyi Podil Ex-perimental-Selection Station of the Institute of Bio-Energy Crops and Sugar Beet of the National Academy of Agrarian Sciences (Semenivka district, Poltava region) during 2006−2009. As a result of the conducted studies it was established that the results of short-term rotation of crop succession changed depending on sugar beet and other crops’ fertilization system. Applying 6.25 t of manure + N45.0Р60.0К45.0 resulted in obtaining the high-est grain yield per 1 ha of crop rotation area – 2.48 t. As far as sugar beet root yield per 1 ha of crop rotation area was concerned, it turned out to be the maximal in case of applying 12.5 t/ha of manure+ N33.8Р45.0К33.8 and made 13.2 t during crop rotation period. In its turn, applying 6.25 t of manure + N56.2Р75.0К56.2 and 12.5 t of manure + N33.8Р45.0К33.8 led to receiving the maximal output of feed units and digestible protein per 1 ha of crop rotation area – 8.92 and 8.87 t and 0.69 and 0.68 t respectively.