The yield of pea varieties depending on the elements of fertilization system and sowing rates

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Visnyk LNAU: Agronomy 2020 №24: 82-88

The yield of pea varieties depending on the elements of fertilization system and sowing rates

M. Andrushko, Postgraduate student
ORCID ID: 0000-0002-4099-7605
Lviv National Agrarian University

https://doi.org/10.31734/agronomy2020.01.082

Annotation

To optimize the elements of the technology of pea growing in 2017–2019, field studies were conducted on the experimental field of Lviv National Agrarian University on dark gray podzolic light loam soil.

In the first experiment, the researchers studied nine variants of mineral fertilizers application on Madonna variety, i.e. 1. P0K0 - control; 2. P0K0 + Optimize Pulse; 3. P60K60; 4. P60K60 + N60; 5. P60K60 + S30; 6. P60K60 + N60 + S30; 7. P60K60 + Mg20 + S30; 8. P60K60 + N60 + Mg20 + S30; 9. P60K60 + N60 + Mg20 + S30 + Intermag bean (2 l/ha). The aim of the research is to determine the efficiency of application of phosphorus, potassium, nitrogen, sulfur and magnesium fertilizers.

In the second experiment, three varieties of Madonna, Hotivskyi, and Otaman were studied at six sowing rates, particularly 0.9; 1.0; 1.1; 1,2; 1.3; 1.4 million/ha. The expediency of  those varieties investigation is justified by the most widespread use of them in the Western Forest-Steppe. The range of sowing rates was chosen basing on the analysis of published recommendations.

Results of the studies demonstrate that the highest yield of pea grain was supplied by the Madonna variety, i.e. 6.38 t/ha. The Hotivskyi variety yield was lower and accounted for 6.13 t/ha, which was by 0.25 t/ha less than the Madonna variety. The lowest grain yield accounted for 5.94 t/ha and was supplied by the Otaman variety, which was by 0.44 t/ha less than the Madonna variety and by 0.19 t/ha, as compared to the Hotivskyi variety.

The highest yield of Madonna pea grains (6,43 t/ha) was produced under application of  mineral fertilizers according to the following scheme: P60K60 + N60 + Mg20 + S30 + Intermagus beans (2 l/ha). Such improvement of the pea nutrition system contributed to the increase of the yield by 2.43 t/ha or 60.7%, as compared to the control (P0K0). Application of the micro-resulted in the growth of beans of 0.31 t/ha.

It has been investigated that the optimal sowing rate of the Madonna pea is 1.0 and 1.1 million/ha, 1.2 million/ha for the Hotivskyi variety, and 1.1 and 1.2 million/ha for the Otaman variety.

Improvement of the elements of cultivation technology for the conditions of sufficient moistening of the Western Forest-Steppe of Ukraine allows obtaining permanent yield of pea grain at the level of 6-7 t/ha.

Key words

pea, varieties, fertilizer, sowing rate, yield

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