Efecto de la fertilización fosfatada de larga duración sobre la presencia de trébol violeta en prados de montaña
- R. García
- S. Andrés
- J. Alvarenga
- C. Valdés
- A. Calleja
- Arantza Aldezabal (coord.)
- Ana Aizpurua (coord.)
- Isabel Albizu Beitia (coord.)
- Amaya Ortiz Barredo (coord.)
- Sorkunde Mendarte Azcue (coord.)
- Roberto Ruiz (coord.)
Argitaletxea: Sociedad Española para el Estudio de los Pastos
ISBN: 978-84-611-9642-5
Argitalpen urtea: 2007
Biltzarra: Sociedad Española para el Estudio de los Pastos. Reunión Científica (46. 2007. Vitoria-Gasteiz)
Mota: Biltzar ekarpena
Laburpena
Mineral fertilization is a common practice in mountain meadows in order to increase herbageproduction. Depending on the rates used, herbage chemical and botanical composition may alsobe modified, having a great influence on the nutritive value of the herbage obtained. White andred clovers showed a different response to phosphorus fertilization. While white clover yieldincreased as the rates of phosphorus became higher, red clover yield was negatively affected.When 80 kg P2O5 ha-1 year-1 was applied to the soil, red clover decreased slightly as comparedwith plots without phosphorus fertilization, but almost disappeared when 160 and 240 kg P2O5ha-1 year-1 were used. Soil analysis showed a high phosphorus content in the soils fertilized withthe two highest rates, so it seems that the accumulation of this element for many years can betoxic for red clover.