Efecto de la fertilización fosfatada de larga duración sobre la presencia de trébol violeta en prados de montaña

  1. R. García
  2. S. Andrés
  3. J. Alvarenga
  4. C. Valdés
  5. A. Calleja
Libro:
Los sistemas forrajeros: entre la producción y el paisaje
  1. Arantza Aldezabal (coord.)
  2. Ana Aizpurua (coord.)
  3. Isabel Albizu Beitia (coord.)
  4. Amaya Ortiz Barredo (coord.)
  5. Sorkunde Mendarte Azcue (coord.)
  6. Roberto Ruiz (coord.)

Editorial: Sociedad Española para el Estudio de los Pastos

ISBN: 978-84-611-9642-5

Ano de publicación: 2007

Congreso: Sociedad Española para el Estudio de los Pastos. Reunión Científica (46. 2007. Vitoria-Gasteiz)

Tipo: Achega congreso

Resumo

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.