Uman NUH | today: 09/10/2019

Productivity of a sugar beet after long-term use of the organic fertilizer system in field crop rotation

Author(s) Martynyuk A.T., Candidate of Agricultural Sciences, , Uman National University of Horticulture, Ukraine
Novak Y.W., Candidate of Agricultural Science, , Uman National University of Horticulture
Cherednyk A.Y., postgraduate, , Uman National University of Horticulture, Ukraine
Category The Agronomy
year 2017 issue Випуск №90. Частина 1
pages 205-213 index UDK 631.8:633.63
DOI
Abstract The results of the five-year studies of the effect of organic fertilizers on the formation of productivity of the sugar beet on heavy loamy podzolized chernozem after long-term use of the organic fertilizer system in comparison with the mineral and organic-mineral systems are given. The saturation of a field crop rotation with organic fertilizers at the rate of 9, 13.5 and 18 t/ ha with the direct manure application for the sugar beet in the dose of 30, 45 and 60 t/ ha increased the yield of root crops on average by 6.5-13.5 t/ ha or 18-37% over five years. In the mineral fertilizer system, in case of a single dose (N45P45K45) the yield of sugar beets exceeded the check variant at 9 t/ ha and a single dose of manure (9 t/ ha) at 2.5 t/ ha. In case of a double dose (N90P90K90) of mineral fertilizers and manure (18 t/ ha) the productivity of root crops was 49.9 and 49.7 t/ ha, respectively. The higher sugar beet harvest is obtained when applying both manure and mineral fertilizers in a dose of 30 t/ ha + N60P135K30 – 51.7 t/ ha. The sugar content in root crops was dependent on systems and doses of fertilizer application for sugar beets. In case of the organic fertilizer system, a significant reduction in sugar content (0.4%) was only when applying 60 t/ ha of manure directly for the sugar beet; in case of mineral and organic-mineral fertilizer systems, it reduced in the dose of 0.5% of N135P135K135 and after applying 30 t/ ha of manure + 0.4 % of N60P135K30. For the organic fertilizer system in the crop rotation with the manure saturation of 9, 13.5 and 18 t/ ha after the direct application of 30, 45 and 60 t/ ha, the sugar taking per unit area increased by 1.2-2.23 t/ ha or 19-34%. For the mineral fertilizer system it was 8.71 t/ ha after a double dose of fertilizers applied in the crop rotation (N90P90K90) and N135P135K135 for roots. After the manure saturation of 9 t/ ha + N45P68K36 and 30 t/ ha + N60P135K30 for roots it was 9.07 t/ ha. It is recommended for enterprises that are engaged in animal husbandry and use the organic fertilizer system to apply 60 t/ ha of manure directly for the sugar beet. When growing only grain and industrial crops mineral fertilizers in the dose of N135P135K135 should be applied. In enterprises that have a diversified specialization the fertilizer system of the sugar beet should provide for the introduction of 30 t/ ha manure + N60P135K30.
Key words sugar beet, manure, mineral fertilizers, crop rotation, long-term fertilizer, yield, sugar content, sugar taking.
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