| Summary: | In the article the results of researches of formation of productivity of grain of avena sativa of a seed variety of Zhitomirsky depending on fertilization in conditions of Polissya are resulted. Thus, at the control sites yield yield was 3,08 t/ha. The introduction of fertilizers greatly affected the yield of grain. Thus, on the variant of mineral fertilization, the growth of the crop was 0,88 t/ha. An additional addition of Rost-concentrate (3 l/ha) against the background of N60P60K60 provided a yield increase of 0,25 t/ha or 9,4%.
The highest yield was observed on the fertilizer variant N60P60K60 + Rost-concentrate (4,5 l/ha) – 4,28 t/ha, which is 1,2 t/ha more compared to the option without fertilizer.
As fertilizers increased, heights increased. So, for the introduction of N60P60K60 plant height was 127 cm. Extra nutrition of oat plants by Rost concentrate at doses of 3 l/ha and 4,5 l/ha provided an increase in plant height by 3 and 7 cm, respectively.
The highest height was noted on the fertilizer variant N60P60K60 + Rost-concentrate (4,5 l/ha) – 134 cm, which is 17 cm more compared to the control.
A similar tendency was observed also on the density of plants of oat seedlings. So, on control, the number of plants per 1 m2 was 432 pcs./m2. For the introduction of N60P60K60 the density increased by 12 pcs./m2.
The highest indices of grass density were observed for the introduction of N60P60K60 + Rost-concentrate (4,5 l/ha) – 470 pieces/m2, which is 17 pc/m2 more compared to N60P60K60 + Rost concentrate (3,0 l/ha) .
We established a correlation between the yield of grain of Avena sativa and the height of the grass. The correlation coefficient was 0,92, indicating a strong correlation between plant height and grain yield. At that, the confidence level (p-value) was 0,001.
According to the results of the research, we have established the indices of the area of the leaf surface of avena sativa during the phase of vapour drainage. There is a clear tendency to increase the area of the leaves as fertilizer is added. Thus, on the control of the area of the dressing machine was 38,9 thousand m2/ha, whereas for the introduction of N60P60K60 – 42,4 thousand m2/ha.
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