ANALYSIS AND ASSESSMENT OF CURRENT CONDITIONS FOR SPRING BARLEY CULTIVATION TAKING INTO ACCOUNT BIOGENIC LOAD AND CLIMATE CHANGE IN THE ODESA REGION

P. S. Nikitin; V.G. Ilina

doi:10.32782/uhj.34-35.2025.04

P. S. Nikitin Odesa I. I. Mechnikov National University, 2 Vsevoloda Zmiienka Street, Odesa 65082, Ukraine https://orcid.org/0009-0004-5755-4116
V.G. Ilina Odesa I. I. Mechnikov National University, 2 Vsevoloda Zmiienka Street, Odesa 65082, Ukraine https://orcid.org/0000-0001-5781-701X

DOI: https://doi.org/10.32782/uhj.34-35.2025.04

Keywords: spring barley, biogenic load, climate change, optimization, agroecosystem, soil fertility, Southern Steppe of Ukraine

Abstract

The yield of spring barley, the condition of the soil cover, and the stability of agricultural production are directly dependent on the combination of climatic conditions and the level of biogenic load. This article investigates the main methodological principles for the analysis and assessment of agroclimatic factors that determine the optimal conditions for growing spring barley in the Odesa region under conditions of intensified climate change.

The deterioration of agrometeorological indicators, the unevenness of precipitation, and the high variability of the temperature regime reflect the increasing anthropogenic impact on the soil-plant complex, driven by intensive land use, the application of mineral fertilizers, land transformation, and other types of economic activity. The study presents key indicators used to assess the biogenic load, the dynamics of the production process, and the adaptive properties of spring barley.

Prior to the intensification of climate change, the agricultural landscapes of the Odesa region were subjected to one of the highest levels of anthropogenic load within the Southern Steppe of Ukraine. Forecast indicators of the biogenic load on the soil and plant cover for the coming years indicate a stable trend of its growth for most agroecological characteristics of the region. Regarding the northern districts of Odesa region, the increase in load is expected primarily for the nitrogen and water regimes, while for the coastal territories, it is expected for the humus status and structural properties of the soils. The article examines the main groups of factors that reduce the productivity of spring barley and limit the possibilities for optimizing crop areas under the influence of climate change. As a result of the increased biogenic load, the possibilities for the stable use of soil resources are significantly reduced. The deterioration of agroclimatic conditions and the moisture deficit considerably reduce the productive potential of agroecosystems.

The primary task is to determine the actual needs of agricultural production regarding a rational cropping structure, the collection and generalization of data on the state of soil-plant systems, the harmonization of methods for assessing the biogenic load, and conducting such an assessment within the region. It is necessary to identify ways to transition to adaptive management models for the agroecosystems of the Southern Steppe of Ukraine, considering the decrease in productivity resulting from both climate change and excessive biogenic load on soil resources.

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