Photosynthetic Potential Of Spring Barley Plants In The Steppe Zone

Sergey Masliiov,Natalia Korzhova

doi:10.48077/scihor.24(2).2021.62-68

Abstract

Today, an increase in the real potential of grain crops, including spring barley, is a necessary condition for elements of crop cultivation technologies. Therefore, given the limited resource potential of spring barley crops, their fastidiousness to the soil, considerable attention should be paid to the photosynthetic potential of plants and the standardised application of mineral fertilisers. The aim of the study was to improve the elements of the technology of growing promising varieties of spring barley by establishing the mineral nutrition effect on the photosynthetic activity of plants in the conditions of the Luhanska Oblast. This study provides examples of improving some technologies for growing promising varieties of spring barley and determines the optimal norms for applying mineral nutrition to ensure the high photosynthetic potential of these plants in the climatic conditions of the steppe zone of Ukraine. It was found that the use of ammonium nitrate had a positive effect on the leaf area, increasing it by 1-2.2 thousand m2 /ha compared to the control for all varieties studied. The combined use of diammonium phosphate and ammonium nitrate contributed to an increase in the leaf area by 2-4. 4 thousand m2 /ha compared to the control variant. Simultaneous application of ActiBION increased the total leaf area for all samples studied by 3.8-6.4 thousand m2 /ha. The best indicators among the studied varieties were observed on the six-row variety Helios and the double-row variety Stalker. The six-row variety Vakula and the two-row variety Adapt showed slightly lower results. Further research implies the study of the influence of photosynthetic activity of promising varieties of spring barley on crop productivity in the steppe zone of Ukraine. The findings can be recommended for production as one of the elements in the technology of growing spring barley in the climatic conditions of the Luhanska Oblast

Highlights

The development and improvement of existing technologies for growing grain crops, in particular spring barley, in steppe conditions is currently the main priority area of agricultural production [1; 2]
Given the limited resource potential of spring barley crops, their fastidiousness to the soil, considerable attention should be paid to the photosynthetic potential of plants and the standardised application of mineral fertilisers
The aim of the study was to improve the elements of the technology of growing promising varieties of spring barley by establishing the mineral nutrition effect on the photosynthetic activity of plants in the conditions of the Luhanska Oblast

Summary

Introduction

The development and improvement of existing technologies for growing grain crops, in particular spring barley, in steppe conditions is currently the main priority area of agricultural production [1; 2]. Spring barley is one of the key grain crops cultivated in Ukraine and is the fourth in the world in terms of production, making the country one of the world leaders (top five) [4]. Given the limited resource potential of the plant, changing weather conditions, the fastidiousness of barley to the soil and the crop productivity, it is necessary to pay considerable attention to: establishment of the optimal density of productive stem; phytosanitary condition of the field; the choice of fertiliser systems and retardant protection; development of the root system and photosynthetic potential of plants [6,7,8]. Bochevar et al, – note the fact that improvement of the nutrition background has a positive effect on the height of plants, the length of the ear, the number of productive shoots, etc. [9; 10]

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Conclusion