Effect of Drought on the Development of Deschampsia caespitosa (L.) and Selected Soil Parameters during a Three-Year Lysimetric Experiment

This work presents results from a field experiment which was focused on the impact of the drought period on microbial activities in rhizosphere and non-rhizosphere soil. To demonstrate the effect of drought, the pot experiment lasted from 2012 to 2015. Fifteen lysimeters (plastic containers) were pr...

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Bibliographic Details
Published in:Life (Basel, Switzerland) Switzerland), 2023-03, Vol.13 (3), p.745
Main Authors: Elbl, Jakub, Lukas, Vojtěch, Sobotková, Julie, Huňady, Igor, Kintl, Antonín
Format: Article
Language:English
Subjects:
basal respiration
Biological activity
climate change
Deschampsia caespitosa
Drought
Experiments
Hydrology
Hydrophobicity
Hypotheses
Laboratories
Lysimeters
Microbial activity
Microorganisms
mineral nitrogen
Moisture content
Moisture effects
Nitrogen
Nutrients
Precipitation
Repellency
Respiration
Rhizosphere
Soil fertility
Soil microorganisms
Soil moisture
Soil water
Subsoils
Topsoil
Water content
Water shortages
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Summary:This work presents results from a field experiment which was focused on the impact of the drought period on microbial activities in rhizosphere and non-rhizosphere soil. To demonstrate the effect of drought, the pot experiment lasted from 2012 to 2015. Fifteen lysimeters (plastic containers) were prepared in our area of interest. These lysimeters were filled with the subsoil and topsoil from this area and divided into two groups. The first group consisted of two variants: V1 (control) and V2 (84 kg N/ha), which were not stressed by drought. The second group consisted of three variants, V3 (control), V4 (84 kg N/ha), and V5 (84 kg N/ha + 1.25 L lignohumate/ha), which were stressed by drought every year of the experiment for 30 days. Changes in the soil moisture content caused by drought significantly affect the growth of L., the microbial activity, and the soil's capacity to retain nutrients. The measured basal respiration and dehydrogenase activity values confirm the significant effect of drought on microbial activity. These values were demonstrably higher in the period before drought simulation by more than 60%. On the other hand, significant differences between microbial activities in the rhizosphere and non-rhizosphere soil were not found. We did not find a clear effect of drought on the formation of soil water repellency.
ISSN:2075-1729
2075-1729
DOI:10.3390/life13030745