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Dynamics of nitrogen in plants of winter rye and coefficient use it from fertilizers

Author(s) Hospodarenko G.M., Doctor of Agricultural Sciences, Professor of Department of Agricultural Chemistry and Soil Science, Uman National University of Horticulture, Ukraine
Ptashnyk M. M., post-graduate student, , Uman National University of Horticulture, Ukraine
Category Agricultural chemistry
year 2014 issue №1
pages 21-25 index UDK 631.82
DOI
Abstract The dynamics of nitrogen in plants of winter rye, depending on the types of fertilizers, rules and timing of fertilizer. On the basis of research and data from other researchers clarified the parameters of total nitrogen in overground mass of winter rye. Established that nitrogen in the plants of winter rye varies depending on the phase of growth and development of plants increases significantly by the introduction of nitrogen fertilizer feeding. Adding nitrogen fertilizer rate of N30–60 early spring increases the content of total nitrogen in overground mass of winter rye in the phase of tillering to 3,48–4,16% of dry matter. In the next phase of growth and development of higher values of total nitrogen were in the retail of nitrogen fertilizers in the two terms are in the phase of the output plants grow up to 3,32–3,71%, in phase heading – to 1,30–1,44 in grain – to 1,59–1,71 and to 0,43–0,46% in straw on a dry basis. With the introduction of N30–90 early spring nitrogen fertilizer utilization rate is 30–52%, and feed crops of winter rye N30–60 in the early phase of the output of plants in the tube increases it to 45–73%. But the utilization of nitrogen in the second feeding is only 29–42%.
Key words winter rye, nitrogen fertilizers, rules and terms of fertilizer, utilization of nitrogen fertilizers, the total nitrogen content
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