Mineral fertilization on mountain grassland

Bijeenkomst: EGF2015
Auteur: Rotar I., Păcurar F., Vidican R., Mălinaș A. and Gliga A.
ISBN: 978-9090-289-61-8
Jaar van uitgifte: 2015
Producttype: Paper
As seen in other studies conducted over time, mineral fertilization provides an opportunity to improve grassland productivity and fodder quality. The aim of our research is to follow the effect of large amounts of mineral fertilizers on mountain grassland systems (for conditions specific to Apuseni Mountains, Romania) as well as to evaluate if increasing the quantity and quality of sward fodder value is applicable for the highly diverse grassland specific to Apuseni Mountains. The findings come from an experiment with 4 treatments (T1 = control (unfertilized), T2 = N50P25K25, T3 = N100P50K50, and T4 = N150P75K75). Mineral fertilization is directly proportional to dry matter (DM) harvested, which reaches up to 5.38 Mg ha‑1 DM. As a result, radical floristic changes occurred, Festuca rubra L. grassland type evolved into a Festuca rubra L. – Trisetum flavescens L. grassland, then into Agrostis capillaris L. – Trisetum flavescens L. grassland and then into one of Agrostis capillaris L. grassland type. The high inputs did not result in significant yield increases, but led to the disappearance of Festuca rubra L. grassland type and hence its specific diversity. Some nitrophilic species were better installed compared to oligomesotrophic species or oligotrophic species.