Uman NUH | today: 09/04/2019

Comparative evaluation of pre forecrops and fertilizers on the yield formation of sugar beet

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
Category The Agronomy
year 2018 issue Випуск №92. Частина 1
pages 149-159 index UDK 633.16:631.8:633.63
DOI
Abstract The study was conducted in 2015-2017 in the stationary experiment of Department of Agrochemistry and Soil Science of Uman National University of Horticulture, started in 1964 in podzolized chernozem. Sugar beet, depending on fertilizer rates and systems, was grown in the 10-field crop rotation in the link with clover for one mowing and silage corn after winter wheat. In the experiment, damp cattle manure, ammonium nitrate, granulated superphosphate and potassium chloride were used which were applied for basic soil cultivation. Studies show that on average, for three years of studies, the application of 45 t/ ha of manure + N90P202K45 for sugar beets in the link with clover gave higher yield of root crops (53.3 t/ ha). Growing sugar beets in the link with silage corn reduced its yield, depending on rates and fertilizer systems, by 0.7-2.9 t/ ha. Fertilizers were more important in for the yield of sugar beet among the studied factors. On average, their impact was 71%, while weather conditions and pre forecrops accounted for 16 and 6%. The sugar content in root crops depended more on rates of organic and mineral fertilizers, as well as weather conditions and less on pre forecrops of sugar beets. In both links of the crop rotation, a significant decrease in the sugar content of root crops (0.3-1.2%) was due to the application of mineral fertilizers in the rate of N180P180K180. Application of mineral and organic fertilizers contributes to a significant increase in the estimated sugar output per unit area which in the link with clover was 1.78-3.43 t/ ha and in the link with silage corn was 1.73-3.55 t/ ha . It is more in comparison with the check variant at 27-52 and 28-58%. Higher sugar content (10.02 t/ ha) was obtained in the link with clover for one mowing at the application of 45 t/ ha of manure + N90P202K45 for sugar beets.
Key words sugar beet, manure, mineral fertilizers, pre forecrops, crop rotation.
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