INFLUENCE OF MINERAL FERTILIZERS ON PRODUCTIVITY AND GRAIN QUALITY IN SPRING WHEAT IREN
2018
Lyskova, I.V. | Lyskova, T.V. | Mazurova, S.V.
The efficiency of action of various dozes (50, 100, 150, 200 kg/ha) of phosphoric and nitric-potassium fertilizers (90 kg/ha each) on the productivity and grain quality of the spring wheat “Iren” which was cultivated (in 2010, 2013 and 2017) on medium-loamy sod-podzolic soil and grown on integumentary loams was studied in the long-term field stationary tests (east area of the central agro climatic zone of the Kirov region). The experience scheme included 6 variants on the two backgrounds: non-limed (рН 3,8) and liming (рН 5,4 … 6,4). Meteoconditions during vegetation period (a drought in 2013 and storm rains in 2017) influenced greatly on productivity of the spring wheat. In the favorable 2010 year, the productivity of 1,72 t/ha without application of fertilizers on a “without lime” background and that of 2,00 t/ha on a “lime 1 H.a.” background was received, with the productivity increase from liming being 16%. Application of only nitric fertilizers has raised productivity of the spring wheat on 32% on a non-limed background and on 39% on a liming background. The complex application of NPK promoted productivity increase on a non-limed background from 37 to 49% and on a limed background from 38 to 50% with the maximum productivity of 2,99 t/ha. The spring wheat grain has met the GOST Standard requirements on natural weight. Positive influence of fertilizers on the crude protein and vegetable gluten content in the grains is observed. The close correlation association of the spring wheat productivity to the crude protein r = 0,79 content and also to the vegetable gluten content in the grains r = 0,78 is revealed
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