Content and Uptake of Ash and Selected Nutrients (K, Ca, S) with Biomass of Miscanthus × giganteus Depending on Nitrogen Fertilization

Fertilisation has a significant impact not only on the yielding, but also quality of harvested biomass. Among energy crops, Miscanthus × giganteus are some most important plants used for combustion process. The chemical composition biomass effect nitrogen fertilisation (with dose 60 kg N ha?1) in different terms sampling content and uptake crude ash, potassium, calcium sulphur by rhizomes, stems, leaves aboveground part miscanthus was evaluated paper. Nitrogen contributed to increase ash rhizomes plants. Independently potassium decreased whole vegetation period; case stems this decrease amounted 60%. Calcium various parts highly differentiated compared content. Average 2.68 higher rhizomes. affected significantly all examined (except uptake). Uptake under during period.