Agronomic efficiency of fertilizers in pea growing under the conditions of climate change of the Black Sea Steppe

Aim. Establish the influence of nutritional background on the productivity and grain quality of pea varieties in the conditions of the eastern Forest-Steppe of Ukraine. Results and Discussion Oplot, Tsarevych and Haiduk varieties yield did not differ significantly (2.18-2.21t/ha), the lowest (1.98t/ha) was established for Malakhite variety on unfertilized background under conditions of 2018-2021. The same trend was noted on the background of the main application of N30P30K30, when with an average yield of varieties was 2.59 t/ha, the difference was only 0.06-0.12t/ha, while for Malakhite it was significant smaller by 0.30 t/ha. The application of mineral fertilizers of N30P30K30 provided an increase in the productivity of the studied varieties an average by 0.45 t/ha or 21.0%. At the same time, Haiduk and Tsarevych varieties stood out, the increase in grain yield was 24.3% and 23.2%, respectively. Protein content in the grain of the varieties ranged 20.1%-20.6% in the variants without fertilizers and on the background of the main application of N30P30K30 was 19.9%-23.2% on average over the years of research. Regardless of the nutritional background, an increase in the productivity of pea varieties led to a decrease in grain protein content. The possibility of a simultaneous increase in yield and protein content in the grain for Haiduk variety on a fertilized background has been established. Conclusions. Thus, average over the 2018-2021, the highest level of yield was provided by Tsarevych and Haiduk varieties, which is associated with their higher responsiveness to fertilizers and, as a result, resistance to adverse weather conditions during the growing season.

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Productivity formation of pea varieties depending on growing conditions in the eastern forest-steppe of Ukraine

Hlubokyi

Avramenko

Popov

2021

Genet. resur. rosl.

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Nitrogen Feeding of Winter Peas at the Spring Vegetation Re-Covery Stage

BURYKINA,

SERHIEIEV,

KOHUT

et al. 2023

JALSE

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In a field experiment from 2020–2023 on the southern chernozems of the Odessa region of Ukraine, we studied the effect of the doses and timing of mineral nitrogen application when growing winter peas on the tuberization process and crop productivity. Mineral nitrogen in doses of 30, 45 and 60 kg/ha in the form of ammonium nitrate was applied in different development phases of winter peas under seedbed cultivation: foliar top dressing with urea solutions during the resumption of spring vegetation, the budding phase and the beginning of grain filling. Winter pea of the Enduro variety was sown annually on October 20, with a row spacing of 15 cm and a rate of 1.2 million germinating seeds per hectare. The previous crop was winter wheat. The conditions of the Southern Steppe of Ukraine for winter sown peas were shown for the first time. The introduction of mineral nitrogen at a rate of 30–60 kg/ha into the soil during sowing inhibited the formation of nodules from the active spring growth phase. The mass of nodules on the roots of pea plants decreased by 30–50% compared to the control variant without nitrogen application. The same norms of mineral nitrogen introduced in early spring during the resumption of vegetation on the leaf in the form of aqueous solutions did not have a negative impact on tuberization. The correlation coefficient between the dose of mineral nitrogen and the number and weight of nodules did not exceed 0.37, indicating a weak relationship between these indicators. The share of influence of mineral nitrogen norms did not exceed 13.7%. With this method of application, the nitrogen content in the vegetative mass of winter peas exceeded the control variant by 18–27%.

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Agronomic efficiency of fertilizers in pea growing under the conditions of climate change of the Black Sea Steppe

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Productivity formation of pea varieties depending on growing conditions in the eastern forest-steppe of Ukraine

Productivity formation of pea varieties depending on growing conditions in the eastern forest-steppe of Ukraine

Nitrogen Feeding of Winter Peas at the Spring Vegetation Re-Covery Stage

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