Wpływ nawożenia mineralnego NPK, organicznego obornikiem i podłożem popieczarkowym na zawartość oraz pobranie potasu i magnezu przez ruń łąkową
Abstract
The study was conducted in the years 1999–2001 on a meadow, where the following
fertilizers combinations were used: object control (without fertilizer), NPK mineral fertilization,
fertilizing with manure, manure with NPK fertilization, fertilizing the with mushroom’s compost;
fertilization with NPK and mushroom’s compost. The aim of this study was to evaluate, the
impact of mineral NPK fertilizers manure and mushroom’s compost on the content and uptake
of potassium and magnesium by the meadow sword. The mushroom’s compost used in the
experiment was characterized by higher content of potassium and less magnesium magnesium
than the manure used as a standard. Mushroom’s compost used separately and together with
NPK increased on the potassium content in the sward, but dont increased the magnesium
content in compare to the alone manure and supplemented with NPK. After taking into account
the nutritional needs of the animals, it was also found that in the study sward, potassium
content was optimize, but magnesium extremely deficient. The ratio of K : Mg in the meadows
hay gathered from the object fertilized with manure including NPK, was much wider than
optimal. It was a result of the uptaking by meadow sward too much potassium and inhibition of
magnesium uptaking.
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