Zawartość form przyswajalnych makroelementów w podłożach organicznych zastosowanych do uprawy fiołka rogatego (Viola cornuta L.) z grupy Patiola F1
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Aim of the study was to evaluate the content of available nutrients contained in the substrates with municipal sewage sludge, the peat, and in a base of coconut fiber in the cultivation of ornamental plants. Experiments were conducted in the years 2005–2007. They using six horned violet cultivars (Viola cornuta L.) from Patiola F1 group and four substrates: I – sphagnum peat, II – substrate from peat and compost 1 (1:1 v/v), III – substrate from peat and compost 2 (1 : 1 v/v), IV – coconut fibre. Compost 1 was prepared using municipal sewage sludge (35%), potato pulp (35%) and straw (30%). Compost 2 was prepared using municipal sewage sludge (35%), potato pulp (35%) and sawdust (30%). Composts after 10 months of composting were used in the research. It has been shown that composts made from municipal sewage sludge are rich in available forms of nutrients and the plants grown in them grow and develop properly without the need for top dressing fertilizer. Relatively high concentrations of NaCl and Cl content in media supplemented with sewage sludge compost does not adversely affect the development of the group violets F1 Patiola.
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