Influence of differentiated NPK fertilization on Zn, Mn and Fe contents in meadow sward and macroelement to Zn, Mn and Fe ratios
1997
Wozniak, L. | Hajduk, E. (Akademia Rolnicza w Krakowie, Rzeszow (Poland). Zaklad Chemizacji Produkcji Rolniczej) | Kud, K. (Akademia Rolnicza w Krakowie, Rzeszow (Poland). Katedra Technologii Produkcji Rolniczej)
Among other things, the effect of NPK fertilization on the weight ratios of N, K, Ca and Mg to Zn, Mn and Fe was investigated. With increasing fertilizer doses, the N:Zn and K:Zn ratios decreased. The Zn content in cocksfoot-grass did not show a significant dependency on the dose of the fertilizers. The fertilizer doses decreased the Ca:Mn and Mg:Mn ratios in meadow sward and cocksfoot-grass. The N:Mn and K:Mn ratios, however, did not show a significant dependency on the dose of fertilizers. The use of highest doses of NPK increased the N:Fe and K:Fe ratios while decreasing the biological value of hay. It follows from the results that the N and K fertilizer doses should be reduced
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