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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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