Climate-Induced Water Management Challenges for Cabbage and Carrot in Southern Poland

Stanisław Rolbiecki (), Barbara Jagosz (), Roman Rolbiecki and Renata Kuśmierek-Tomaszewska
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Stanisław Rolbiecki: Department of Biogeochemistry, Soil Science, Irrigation and Drainage, Bydgoszcz University of Science and Technology, 85-029 Bydgoszcz, Poland
Barbara Jagosz: Department of Plant Biology and Biotechnology, University of Agriculture in Krakow, 31-120 Krakow, Poland
Roman Rolbiecki: Department of Biogeochemistry, Soil Science, Irrigation and Drainage, Bydgoszcz University of Science and Technology, 85-029 Bydgoszcz, Poland
Renata Kuśmierek-Tomaszewska: Department of Biogeochemistry, Soil Science, Irrigation and Drainage, Bydgoszcz University of Science and Technology, 85-029 Bydgoszcz, Poland

Sustainability, 2025, vol. 17, issue 15, 1-20

Abstract: Climate warming poses significant challenges for the sustainable management of natural water resources, making efficient planning and usage essential. This study evaluates the water requirements, irrigation demand, and rainfall deficits for two key vegetable crops, carrot and white cabbage, under projected climate scenarios RCP 4.5 and RCP 8.5 for the period 2031–2100. The analysis was conducted for Kraków and Rzeszów Counties in southern Poland using projected monthly temperature and precipitation data from the Klimada 2.0 portal. Potential evapotranspiration (ETp) during the growing season (May–October) was estimated using Treder’s empirical model and the crop coefficient method adapted for Polish conditions. The reference period for comparison was 1951–2020. The results reveal a significant upward trend in water demand for both crops, with the highest increases under the RCP 8.5 scenario–seasonal ETp values reaching up to 517 mm for cabbage and 497 mm for carrot. Rainfall deficits are projected to intensify, especially during July and August, with greater shortages in Rzeszów County compared to Kraków County. Irrigation demand varies depending on soil type and drought severity, becoming critical in medium and very dry years. These findings underscore the necessity of adapting irrigation strategies and water resource management to ensure sustainable vegetable production under changing climate conditions. The data provide valuable guidance for farmers, advisors, and policymakers in planning effective irrigation infrastructure and optimizing water-use efficiency in southern Poland.

Keywords: Brassica oleracea L.; Daucus carrota L.; evapotranspiration; global warming; precipitation deficit; soil drought; water deficiency (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2025
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