ECONOMIC EFFICIENCY OF SHORT-ROTATION CROP SUCCESSION DEPENDING ON SUGAR BEET FERTILIZATION SYSTEM

Abstract

Applying mineral and organic fertilizers under sugar beet is one among important measures of raising
the level of economic efficiency of grain and beetroot crop rotations. However, there are not enough experimental
data concerning the effect of fertilization system of sugar beet and other crops cultivated in the zone
of insufficient moistening on economic efficiency of short-term rotation crop succession. So, these are the
topicality and practical importance of corresponding studies, the aim of which is to determine the effect of
fertilizing sugar beet and other crops on economic efficiency of short-term rotation crop succession. The task
of the research was to study the influence of various fertilization systems used during cultivating sugar beet
and other crops in short-term rotation crop succession, on different economic indicators, characterizing the
efficiency of agricultural production; to choose the best variant of fertilizing sugar beet and other crops concerning
economic characteristics. Corresponding experiments were conducted in the Left-Bank Forest-
Steppe of Ukraine, during long-term permanent experiment in the structural subdivision of the Institute of
Bio-Energy Crops and Sugar Beet of the National Academy of Agrarian Sciences of Ukraine, at Veselyi
Podil Experimental Selection Station (in Semenivka district, Poltava region) during 2015–2018. As a result
of the studies, it has been established that in short-rotation crop succession, applying 6.25 t of manure +
N56.2Р75.0К56.2 and 12.5 t of manure + N33.8Р45.0К33.8 per 1 ha of plow land during crop rotation resulted in the
highest gross output value – 19,166 and 19,270 UAH, respectively. Applying 6.25 t of manure +
N11.2Р15.0К11.2 and 6.25 t of manure + N33.8Р45.0К33.8 during crop rotation ensured obtaining the highest net
operating profit per 1 ha of crop rotation area – 9,728 and 8,569 UAH, respectively. Among various fertilizers’
doses, the best profitability was achieved at applying 6.25 t of manure + N11.2Р15.0К11.2 and 6.25 t of manure
+ N33.8Р45.0К33.8 – 108 and 82 %, respectively, per 1 ha of rotation area during crop succession.