Current Agronomy 02

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Browsing Current Agronomy 02 by Author "Furtak, Karolina"

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    Effect of selected osmoprotectants (betaine, ectoine and inositol) on germination and initial growth of Triticum aestivum L. under salt stress conditions – model experiment
    (Instytut Uprawy Nawożenia i Gleboznawstwa - Państwowy Instytut Badawczy w Puławach, 2025) Furtak, Karolina; Gawryjołek, Karolina
    Climate change and increasing soil degradation are driving the need for new agricultural solutions to support crops. Drought stress and salinity are major problems in fields around the world. A promising method to support plants under osmotic stress condi-tions is the use of exogenous osmoprotectants. In this study, the effects of three selected osmoprotectants: ectoine (0.25 mM), betaine (25 mM), and inositol (25 mM), on germination and initial growth of spring wheat under salinity (1% NaCl) stress conditions in model experiment on Hoagland medium were determined. Addition of ectoine showed a statistically significant positive effect on wheat root length (increase of 50.4%) under control conditions. The addition of betaine showed a statistically significant positive effect on shoot length (increase of 60.2%) under salt stress conditions. Surprisingly, the addition of the ectoine to the medium resulted in a statistically significant lower fresh weight of wheat seedlings compared to the control under unstressed conditions. The results show that exogenous application of selected osmoprotectants can mitigate the adverse effects of salinity and promote growth of spring wheat, however this topic requires further, more detailed analysis.
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    Enzymatic activity and metabolic potential of microorganisms in flood-affected soils analysed in the short and long term after flooding – preliminary studies
    (Instytut Uprawy Nawożenia i Gleboznawstwa - Państwowy Instytut Badawczy w Puławach, 2025) Furtak, Karolina; Gawryjołek, Karolina; Woźniak, Małgorzata; Grzęda, Emilia
    Floods are becoming increasingly common in Poland and throughout Europe. The microbiological activity of flooded soils changes, but research in this area, especially long-term research, is lacking. This experiment aimed to compare the enzymatic and metabolic activities of soil microorganisms in two flood-affected fields in the Lower Silesia and Opole voivodeshipsin 2024. Soil samples were taken seven days and seven months after the floodwaters receded. Dehydrogenases activity, acid and alkaline phosphatases activities, and metabolic potential of microorganisms were determined. It was demonstrated that the activity of the measured enzymes in both soils was lower in 2024, seven days after the flood, compared to the activity measured seven months later. However, metabolic activity was higher seven days after the flood than in 2025, although the statistically significant difference only concerned soil O1 measurements. Although these studies only provide a preliminary insight into the basic parameters of soil biological activity, they enable us to observe trends in changes to the soil following flooding and emphasising the importance of long-term research.