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The aim of the work was to assess relation between the chemical composition of the biomass of cover crops and the intensity of its decomposition during the winter period. Parameters for 13 cover crop species included contents of soluble sugars, cellulose and lignin (ADL), on the basis of which derived indicators were calculated – Sugars/ADL ratio and lignocellulosic index (LCI). Biomass decomposition was assessed according to weight loss after winter exposure. Results showed a significant variability in the chem...

Biochar of the waste from seed cleaning to produce can improve soil fertility and carbon sequestration. Chemical properties of biochar are affected by input biomass (feedstock) type. Biochar production from wood pellets, pelletized sweet clovers, poppy residues, hay, straw, grass-seed and alfalfa is discussed. Micro-elements (Fe, Mn, Zn, Cu, B) in biochars prepared from different types of pelletized biomass are evaluated. All materials exhibited higher element contents. The highest Fe and Cu were in biochar from p...