engleski

Soil Nmin dynamics during short flood as result of the climate changes

Nowadays, climate changes are considered as one of the biggest challenges for the society overall, with a special highlight on vulnerable agriculture production as human activity which produce food. According to predictions As extreme climate events is gonig to be more often, and fl ood is one of them as a result of extreme heavy rain in short period of time a project “Potential of the rhizosphere microbiome in the adaptation of agriculture to climate change (PERSPIRE)”, funded by the EU Regional Development Fund, focused on the eff ects of this kind of fl ood. Aim of the research was to determine the eff ect of the short fl ood on model plant in seedling phenophase. Experiment in carried out in the controlled conditions (16 hours day/8 hours night ; 25 ˚C per day/20 ˚C per night ; 60-70% relative humidity), with the cabbage (Brassica oleracea var. capitata f. alba) used as a model plant. The experiment lasted, from seeding to the full end, for 57 days. Plants (triplicate trials) were subjected to either one (72 h duration) or two short-term fl ooding events (72 h duration, 10 days recovery between fl oods) at diff erent stages of development. At diff erent time points (day 0, after fl ooding and after recovery period) soil samples were taken and Nmin was determined.Result showed that fl ood treatment signifi cantly decreased Nmin content in the soil (around 50%), both after fi rst and second fl ood. During the recovery time Nmin content increased, but after second fl ood decreased again.

ammonuim, Brassica oleracea var. capitata f. alba, excessive water, nitrates

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