Effect of fertilization on below-ground plant mass of submontane Polygono-Cirsietum meadow

0395986 - ÚVGZ 2014 RIV CZ eng J - Článek v odborném periodiku
Holub, Petr - Tůma, I. - Fiala, Karel
Effect of fertilization on below-ground plant mass of submontane Polygono-Cirsietum meadow.
Beskydy. Roč. 6, č. 1 (2013), s. 33-42. ISSN 1803-2451
Grant CEP: GA ČR(CZ) GA526/06/0556; GA MZe QJ1220007; GA MŠMT(CZ) ED1.1.00/02.0073
Institucionální podpora: RVO:67179843 ; RVO:67985939
Klíčová slova: biomass partitioning * grassland * fertilization * primary productivity
Kód oboru RIV: EH - Ekologie - společenstva; EF - Botanika (BU-J)

We assessed below-ground net primary productivity (BNPP) in the wet submontane Cirsium meadow occurred in the highland region of the Czech Republic. Effect of four different fertilization levels on BNPP was estimated in 1992. At the beginning of the growing season (April 29), total dry mass of rhizomes, roots and total below-ground plant parts of unfertilized stand reached 177, 1478 and 1657 g.m-2, respectively. Their living parts formed 42 % of their total dry mass. In comparison with unfertilized stands, however, the greatest accumulation of dry mass of rhizomes (504 g.m-2), roots (1503 g.m-2) and total below-ground dry mass (2008 g.m-2) was reached after application of 90 kgN.ha-1. Similarly, the highest BNPP values for living (435 g.m-2.yr-1) and total below-ground dry mass (351 g.m-2.yr-1) were calculated for the stand affected by the same amount of fertilization. These data show how variable role grasslands can play in accumulation and turn over of root biomass due to different levels of fertilization.
Trvalý link: http://hdl.handle.net/11104/0223865