The changes of enzymatic activity of soil under eastern galega (Galega orientalis Lam.) after NPKCa fertilization
B. Symanowicz, S. Kalesa, W. Skorupka, M. Niedbałahttps://doi.org/10.17221/905/2013-PSECitation:Symanowicz B., Kalesa S., Skorupka W., Niedbała M. (2014): The changes of enzymatic activity of soil under eastern galega (Galega orientalis Lam.) after NPKCa fertilization. Plant Soil Environ., 60: 123-128.
Changes in the enzymatic activity of soil variably fertilized with NPKCa were investigated in a field experiment carried out in 2005–2010. The study was conducted with a legume plant, i.e. eastern galega (Galega orientalis Lam.). The experiment was completely randomized and carried out in three replications with the following mineral fertilization: control, N, P, K, NPK, NP, NK, PK, NPKCa, PKCa, Ca, NKCa, and NPCa. Mineral fertilization was applied in kg/ha: (N-20, P-50, K-160, Ca-150). The soil samples collected from the Ap horizon (0–30 cm) of the rhizosphere in spring after the 1st, 2nd and 3rd swathing had a pHKCl in range from 6.55 to 6.93. The activity of acid phosphatase and alkaline phosphatase was at a low level. The highest activity of urease was recorded in the soil fertilized with NPK, whereas the highest activity of dehydrogenases was in the soil fertilized with PKCa.Keywords:
mineral fertilization; phosphatases; urease; dehydrogenases; biochemical index