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This master's thesis is specifically concerned with the influence of malolactic fermentation on the aromatic profile of red wine. The literary (theoretical) part defines the malolactic fermentation and describes the volatile substances formed during malolactic fermentation. The practical part results from an experiment of various kinds of malolactic fermentation, where there are used two different strains of lactic acid bacteria. The experiment was carried out on three different varieties of wines which were sensorically and analytically evaluated.

This thesis was aimed on the elaboration of literature review and a on the practical assessment of the field trial with a mixtures of varieties. The first part of the literature review was devoted to crop diversification in agriculture, which is closely related to mixtures of varieties. In the other part were characterized advantages of mixed varieties, such as better yield of mixed varieties in comparison with component varieties. We have also described some of the mechanisms for the creation of income (and mechanisms against pathogens). Another part was devoted to quality of mixed varieties. The last part was devoted to disadvantages resulting from the cultivation of mixed varieties. In the year 2013 it was founded field trial in Žabčice -- Nova obora, which was investigated in practical part. It was investigated effect of three binary mixtures. These mixtures were identified as : Elan + Golem, Viriato + Tobak Baletka and Annie. Each of pure component varieties were planted for checking and comparison. The main examined factors were yield, weight of thousand seeds, sedimentation index, wet gluten, gluten index, falling number, nitrogenous substances, weight and height of the plant. The best yield reached mixture Elan + Golem (average yield was 9.61 t / ha), it's yield reached the yield of the best variety Elan (9.92 t / ha). The mixture Tobak + Annie had higher average value of the falling number and nitrogenous substances than the pure varieties, average results this mixture reached in values of sedimentation index and wet gluten. In the total evaluation this mixture was recommended as the best one. The holder of the quality in this mixture was the Annie variety. This mixture has fulfilled requirements for baking quality and reached Czech elite level.

Microbial biomass plays a main role in transformations of elements. It participates in transformation biogenic elements and it is a sensitive indicator changes in soil. The conten of soil microbial biomas is not the same, during the year Application of fertilizers can improve soil properties. Sewage sludges aplication on soil can provide not only organic matter, but they can increase soil productivity an provide nutrients, which is important for plants. In this thesis was watched effect of long-term application of sewage sludge on soil microbial bimass of carbon and nitrogen. Changes microbial biomass of carbon and nitrogen was watched on two sites Suchdol and Červený Újezd. Changes was watched under different system of fertilization. The long-term fertilization was manure, sewage sludge, NPK and unfertilized control. The samples was collected during the April, May, June and July 2014 and 2015 in March , April and June. The content of microbial biomass carbon and nitrogen was estimated by fumigation-extraction method. On station Suchdol was in the year 2014 highest in April with sewage sludge treatment 237,52 mg C/kg. In the year 2015 was content soil microbial biomass carbon highest on manure treatment 338,90 mg C/kg. On station Červený Újezd was in the year 2014 highest content microbial biomass carbon on sewage sludge treatment 280,13 mg C/kg. The highest content microbial biomass nitrogen on Suchdol in the year 2014 was in the April with NPK treatment 23,19 mg N/kg. The maximum content of soil microbial biomass nitrogen in the year 2015 was with sewage sludge treatment 24,07 mg N/kg. On the stand Červený Újezd was highest content of soil microbial biomass nitrogen in the year 2014. It was on June with manure treatment 21,52 mg N/kg. One year later there was the highest with manure treatment 23,24 mg N/kg.

This diploma thesis deals with home preparation for teaching physics at basic school by simple experiments. Set of worksheets with didactic analysis and evaluation of a questionnaire survey of attitudes pupils and parents of this theme. The worksheet is possible use in education of physics on basic school. Conclusions of questionnaire survey give an answer about appropriateness of home experiment by physics education from the perspective pupils and parents.