Uman NUH | today: 08/12/2021

Grain quality of spring barley depending on the fertilization of plants with mineral nitrogen

Author(s) Rassadina I.Y., postgraduate, , Uman National University of Horticulture
Леонова К. П., , ,
Садовський І. С., , ,
Власенко С. О., , ,
Category The Agronomy
year 2021 issue Issue number 98. Part 1
pages 192-199 index UDK 633.16 -021.4:631.84
DOI 10.31395/2415-8240-2021-98-1-192-199 (Link)
Abstract The influence of root feeding on the quality indicators of spring barley grain on podzolized chernozem of the Right-Bank Forest-Steppe of Ukraine has been investigated. It has been established that the use of root feeding of spring barley plants with mineral nitrogen simultaneously with an increase in grain yield also contributes to an increase in the quality of feed. At the same time, the crude protein and the amount of sugars increase, and the amount of fiber in the grain decreases. The amount of crude protein in spring barley grain on average for 2018–2020 varied depending on the dose of nitrogen when carrying out root fertilization with nitrogen. In the control without fertilizers, it was 12.9 %, when root feeding of plants with nitrogen at a dose of 20 kg/ha – 13.2 %; 30 kg/ha – 14.5 %; 60 kg/ha – 15.8 %; 90 kg/ha – 15.9 %. At the same time, it is observed that the crude protein in barley grain increases with an increase in the nitrogen dose to 60 kg/ha, and a further increase in the nitrogen dose is not accompanied by an increase in crude protein in barley grain. Simultaneously with an increase in the content of crude protein in the grain of barley, the percentage of fiber in the grain decreases during the root feeding of plants with mineral nitrogen. The percentage of mineral salts in barley grain during root feeding with nitrogen remained at the control level. The amount of sugars increases when using root feeding of spring barley plants with mineral nitrogen. If in the control the sum of sugars was at the level of 5.20 % for the air dry matter of barley grain, then in the variants of root feeding with nitrogen it reached the level of 5.31 ... 5.56 percent. Consequently, an increase in the level of crude protein in barley grain during root feeding with nitrogen was not accompanied by a deterioration in the sugar-protein ratio in feed. This is very important for increasing livestock productivity. The studied method of root feeding of barley plants with mineral nitrogen promoted an increase in protein in barley grain. On the control, 358.9 kg of protein was obtained from 1 hectare of spring barley crops, 533.2 kg of protein per 1 hectare was collected on the root application with nitrogen 60 kg/ha, and 568.5 kg of protein was collected on the version of root feeding with nitrogen 90 kg/ha. per hectare.
Key words barley, root feeding, nitrogen fertilizers, quality indicators, protein collection
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