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Vliv vápnění a způsobu sklizně travních porostů na fyzikální a hydrofyzikální vlastnosti pseudogleje
Mikulenčák, Štěpán
This thesis evaluates impacts of liming, mulching and mowing grassland on soil physical and hydrophysical properties, in my case from pseudogley, which was at the site of experiment. There were used a soil samples for the analysis which were got from experiment site in years 2013, 2015 and 2016 everytime in October in depth 5-10 cm. There were analyzed the broken soil samples and these attributes were determined: organic carbon, active acidity and exchange acidity. From compact soil samples were determined different attributes, such as dry bulk density, total porosity, volume non-capillary porosity, water holding capacity, moisture and minimal air capacity. The results of the analyses were statistical evaluated and evaluation did not determine conclusive effect of liming treatment (1,8 t.ha-1 CaO) on most of the observed soil properties. Otherwise, mulching influenced most of the attributes in the positive way. Compare to mowing, the biggest inconvenience caused only the pH decreasing.
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Vliv melioračního vápnění a způsobu sklizně trvalých travních porostů na fyzikální a hydrofyzikální vlastnosti půdního typu pseudoglej.
Mikulenčák, Štěpán
Soil acidification associated with natural processes and neglect of maintenance liming has a negative impact not only on grassland productivity, but also on the soil's physical properties. Together with different methods of harvesting permanent grassland, the effects of amelioration liming on these properties were investigated. In a two-year experiment, changes in the values of physical and hydrophysical parameters were evaluated. These were determined from the sampling of soil samples in three periods (spring, summer, autumn). As a result, a positive effect of the application of dolomitic limestone at the dose of 3 t.ha-1 was found out to be increasing the soil reaction, reducing the bulk density, increasing the non-capillary porosity and increasing the minimum air capacity. In addition to the more stable structure, differences were observed among grassland management only in partial results. For example in non-limed variants was discovered the decrease of pH or increase in bulk density which was reduced as a result of mulching. There was as well confirmed positive effect of mulching on the increase of oxidizable carbon content or bulk density reduction.
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