An exponential fertilization dose–response model to promote restoration of the Mediterranean oak Quercus ilex

Oliet Pala, Juan Antonio; Uscola, Mercedes; Salifu, Francis y Jacobs, Douglass F. (2015). An exponential fertilization dose–response model to promote restoration of the Mediterranean oak Quercus ilex. "New Forests", v. 46 (n. 5-6); pp. 795-812. ISSN 0169-4286. https://doi.org/10.1007/s11056-015-9493-5.

Descripción

Título: An exponential fertilization dose–response model to promote restoration of the Mediterranean oak Quercus ilex
Autor/es:
  • Oliet Pala, Juan Antonio
  • Uscola, Mercedes
  • Salifu, Francis
  • Jacobs, Douglass F.
Tipo de Documento: Artículo
Título de Revista/Publicación: New Forests
Fecha: 2015
Volumen: 46
Materias:
Palabras Clave Informales: Quercus ilex , Exponential fertilization.
Escuela: E.T.S.I. Montes (UPM) [antigua denominación]
Departamento: Sistemas y Recursos Naturales
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

Nursery nitrogen (N) fertilization influences seedling N reserves, morphology, photosynthesis rate and stress tolerance and frequently enhances outplanting performance. Although mineral nutrition is a critical aspect of seedling quality, fertility targets of Mediterranean sclerophylous species have not been thoroughly quantified. We sought to define those fertility targets for seedlings of Quercus ilex, a key species in Mediterranean areas. Nine fertility treatments, ranging from 0 to 200 mg N seedling-1 applied under an exponential regime were tested in a greenhouse dose response trial in which phosphorus (P) and potassium (K) were increased in the same proportion as N (15N:5P:15K). Height and diameter growth were measured weekly, and biomass and nutritional status were analyzed at the end of culture (24 week). Plant growth and nutritional response to increased fertilization followed a curvilinear pattern depicting phases that ranged from deficiency to luxury consumption. Seedling dry mass production was maximized at 125 mg N seedling-1 (sufficiency level). N content and concentration increased with fertilization, reaching a maximum at 200 mg N seedling-1 (luxury consumption). P and K concentrations peaked at 75 and 25 mg N, respectively, suggesting a dilution effect of these nutrients. Root volume increased linearly up to 100 mg N and declined thereafter. The sufficiency level for Q. ilex (125 mg of applied N seedling-1) is notably higher than for other Quercus species from other biomes but intermediate to other Mediterranean Quercus species. No toxicity was observed at the highest treatment rate (200 mg N) suggesting that increased exponential N rates along with greater P and K proportions than those used in our experiment may further maximize nutrient storage.

Más información

ID de Registro: 44756
Identificador DC: http://oa.upm.es/44756/
Identificador OAI: oai:oa.upm.es:44756
Identificador DOI: 10.1007/s11056-015-9493-5
URL Oficial: http://link.springer.com/article/10.1007/s11056-015-9493-5#page-1
Depositado por: Memoria Investigacion
Depositado el: 15 Mar 2017 13:53
Ultima Modificación: 21 Mar 2017 11:16
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