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Interaction between K, Na, Ca and Mg in rescuegrass [Bromus unioloides Humb.et Kunth.] and soil in relation to N, K, Na and Mg fertilization

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Nowak G. A., Zalewska M.

Acta Academiae Agriculturae ac Technicae Olstenensis. Agricultura

1995

tom 61

139-146

A pot experiment was conducted to study the effects of increasing rates of nitrogen, potassium, sodium and magnesium on yield and mineral composition of rescuegrass (Bromus unioloides Humb. et Kunth.). The highest yield of dry matter was obtained in the case of nitrogen and potassium treatments, while the effect of sodium and magnesium turned aut tobesmall. Increasing rates of nitrogen improved mineral composition of rescuegrass by limiting excessive potassium accumulation and increasing concentration of Ca, Mg and Na in plant tissues. It resulted in a desirable decrease in values of K/Ca, K/Mg, K/(Ca+Mg) and (K+Na)/(Ca+Mg) ratios. Potassium fertilization increased K/Ca, K/(Ca+Mg) and (K+Na)/(Ca+Mg) ratios in rescuegrass and also K/Mg, K/Na in the second cutting. Sodium and magnesium fertilization diminished the disproportions in ionic equilibrium only to some extent.

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1 Acta Academiae Agriculturae ac Technicae Olstenensis. Agricultura

1 Nowak G. A.

1 Zalewska M.

1 1995

Wyniki wyszukiwania

Interaction between K, Na, Ca and Mg in rescuegrass [Bromus unioloides Humb.et Kunth.] and soil in relation to N, K, Na and Mg fertilization