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Výnos a kvalitativní parametry biomasy u různých meziplodinových směsí
Jančová, Silvia
The diploma thesis dealt with the issue of growing intercrop mixtures. The evaluation took place during the years 2021 and 2022 on the land of the agricultural company DVP AGRO a.s. in the conditions of southern Moravia. From the two-year results, it was found that the production of above-ground biomass in the dry state was in the range of 5.34-6.91 t.ha-1. In the species-rich mixture (a total of 13 species), radish had a dominant representation, on the other hand, leguminous small-seeded species such as cress, Egyptian clover and Alexandrian clover had minimal to no representation in the evaluated biomass. The qualitative analysis of plants shows that the amount of individual nutrients in the biomass depends on the species composition of the mixture and the representation of individual species. The content of C and N differs depending on the above-ground and underground biomass, but also on the length of the growing season. The C/N ratio ranged between 14-19 for above-ground biomass and 18-26 for underground biomass. By adding above-ground biomass, we supply approximately 160-172 kg.ha-1 N, 70-80 kg.ha-1 Ca, 12-21 kg.ha-1 P, 135-229 kg.ha-1 K a 15-19 kg.ha-1 Mg. The results of measuring soil moisture dynamics show that intercrop biomass did not take more water from the soil compared to the variant without intercrops, but on the contrary protected it from non-productive evaporation, which occurs on bare soil, through the involved vegetation.
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Use of fugatami in the cultivation of corn silage
VESELÁ, Miluše
The operation of biogas plants solves environmental aspects (energy management, reduction of negative impacts on the environment, use of renewable energy sources) and their influence in connection with the production of acidogenic (solid) as well as methanogenic (liquid) digestate. This requires establishing mandatory solution procedures in terms of the current legislation (air protection, use of fertilizers). The research for the thesis was carried out in the Agricultural and Commercial Cooperative in Kámen (in the region of Havlíčkův Brod), which lies 527 metres above the sea level. A biogas station has been operated by the cooperative since 2011. In addition to biogas, the cooperative also utilizes the fermentation remnants separated methanogenic digestate as a fertilizer and acidogenic digestate as a raw material for the production of compost. The thesis examined the use of methanogenic digestate when growing silage maize. During the one-year research, two maize hybrids and their response to fertilization by methanogenic digestate were assessed. Both hybrids achieved a higher yield of biomass and a higher yield of the dry matter.
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The influence of fertilisation and grazing frequency on yield of fodder biomass
TVRDÍK, Adolf
In the Bohemian Forest foothills (Kaplice, Large Chuchelec, 650 m n.m.) wereselected experimental and running surface choice variants herbage managed herbal growths with different ways and frequence of pasture and level sustenance (fertilization). There was evaleated stand composition (3x yearly), maturity of fodder biomass in grazing stand (maturity dominant species), production of forage biomass. Work is focused on appreciation influences way and frequence pastoral exploitation and fertilization on production of fodder.
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