Wpływ wapnowania i dodatku materiałów organicznych na plonowanie oraz zawartość azotu, fosforu i siarki w biomasie kupkówki pospolitej (Dactylis glomerata L.), uprawianej w warunkach zróżnicowanej zawartości niklu w glebie

A two-year pot experiment was conducted to estimate the effect of liming and application of waste materials on the yielding and on the content of certain nutrients in cock’s foot (Dactylis glomerata) grown at increasing doses (75, 150, 225 mg kg-1) of nickel in the soil. It was demonstrated that all the factors studied determined the yielding of the plant. A negative effect of nickel was observed, especially in the 1st year of the experiment, manifested in an inhibition of the growth and development of the test grass, mainly in treatments without liming. In treatments where lignite was added to the soil in the 1st year of the experiment, the toxicity of nickel was lower than in treatments with an addition of straw. In the 2nd year of the experiment no yield of cock’s foot biomass was obtained from those no-liming treatments in which the content of nickel was the highest. Liming had an effect on the content of nitrogen, phosphorus and sulphur in cock’s foot biomass, especially in the 2nd year of the experiment. The levels of those macroelements were somewhat higher in treatments with an addition of lignite compared to those with rye straw.