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Zhodnocení stavu půdní organické hmoty při dlouhodobém pěstování obilnin
Sojáková, Lucie
In this diploma thesis was evaluated the influence of various factors (year, sampling depth, organic matter) on the total content of oxidizable carbon Cox in % in long-term cultivation of winter wheat and spring barley (monoculture of cereals). Measurements were made in the years 2016, 2017 and 2018, and are part of long-term research. It is a stationary experiment in the beet production area. The experiment started on the land of the Research Institute of Crop Production in the year 1965, at the location of Ivanovice na Hané. Experiments were made with four different types of organic matter (straw harvesting, intercropping, incorporating straw and farmyard manure). A statistically significant difference was found for the type of organic matter, for sampling depths and year. The highest average value for the three reference years was found for the variant "Intercrop land". The average values of Cox (%) were almost identical for sampling depths of 0.0 - 0.1 m and 0.1 - 0.2 m, but at a depth of 0.2 - 0.3 m values of Cox were significantly lower.
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Vliv vybraných agrotechnických faktorů na stav půdní organické hmoty při dlouhodobém pěstování jarního ječmene
Šanderová, Pavla
The aim of the thesis is to make an evaluation of the impact of agro-technical factors (tillage, crop rotation), in the total amount of oxidizable carbon Cox (%) on a long-term grown spring barley. Measurements were carried out in 2014 and 2015, excluding these years from long series of observations. It is a stationary experiment in sugar beet growing region which runs continuously since 1989. The experiment has been established by Mendel University in Brno - Ivanovice in Hana on the cultivated land owned by Crop Research Institute, v. v. i. In Prague - Ruzyně. The observations were made in two rotations with 33.3% and 66.6% share of cereals. There were compared four variants of the tillage and samples were taken from three depths. The Cox monitored impacts were statistically demonstrated in all the variables (crop rotation, tillage and sampling depth). There was also found higher concentration of Cox in the crop rotation with 66.6% cereals representation. While tillage monitoring, the highest amount of Cox was seen by use of tillage equipment in the extent of 0,10 metres. On the other hand, the lowest amount of Cox was found by direct seeding into a soil. Also, it was found that the amount of Cox decreases with depth of sampling in both monitored years.
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Půdní oxidovatelný uhlík a stanovení poměru huminových kyselin a fulvokyselin vybraných studijních ploch (les, ekoton, orná půda louka/pastvina)
Sochor, Lukáš
: Target of this bachelor work was to compare quantity, quality and seasonal dynamics of oxidizable carbon and ratio of humic acids and fulvic acids on selected areas of interest: forest, ecoton, arable soil and permanent grassland. Soil samples have been taken for the period of growing season in 2015, on 5 selected localities in 30 m long transect in ecoton, forest and to permanent grassland (eventually arable soil). Results were valorized in the cases of: seasonal dynamics examined variables, content of organic substances (Cox) in soil and their quality (HK:FK), influence of mesoclimate to quantity and quality of organic matter in soil. More oxidizable carbon was in both horizonts (A-5cm, B-40cm) in forest. Ecoton effect is markable only on the coldest locality. On the warmest locality we can see, that ecoton effect has the same character of evolution as agricultural soil. On the wettest locality we can see, that ecoton effect has the same character of evolution as forest soil. On the driest locality is not markable ecoton effect.
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