Annals of Forest Science

, Volume 68, Issue 3, pp 647–656

Fall fertilization of Holm oak affects N and P dynamics, root growth potential, and post-planting phenology and growth

  • Juan A. Oliet
  • José M. Salazar
  • Rafael Villar
  • Eduardo Robredo
  • Fernando Valladares
Original Paper

DOI: 10.1007/s13595-011-0060-8

Cite this article as:
Oliet, J.A., Salazar, J.M., Villar, R. et al. Annals of Forest Science (2011) 68: 647. doi:10.1007/s13595-011-0060-8

Abstract

Introduction

For Holm oak (Quercus ilex L.), a flush growing species, nutrient loading during the growing season is difficult and can lead to a low nutrient status of the seedlings. To provide insights about Holm oak nutrient dynamics during fall in the nursery and subsequent planting performance, a factorial nursery experiment was conducted in a mild fall–winter area testing the effects of timing of fertilization (early and late fall) and rate (two doses of a NPK fertilizer that applied 28 and 56 mg N per seedling), followed by an experimental plantation.

Results

Biomass, allocation pattern, shoot N and K, and root K were unaffected by both rate and timing of fall fertilization. However, shoot P concentration of fall fertilized plants was significantly increased, and root P concentration was enhanced by applying fertilizer at either the highest rate or during early fall. This revealed a different nutrient dynamics during fall that was dependent on the specific nutrient and plant component.

Discussion

Root growth potential was positively correlated to nursery root P concentration. Six months after planting, fall fertilized plants showed higher shoot biomass, higher proportion of new leaves, and faster development, producing leaves earlier compared with unfertilized plants.

Conclusion

It is concluded that early fall fertilization promotes nutrient loading of P in Holm oak, with significant effects on root growth potential and field growth by means of a phenologically earlier development and a higher aboveground biomass.

Keywords

Late season fertilization Quercus ilex Nutrient loading Phosphorus Root growth potential 

Copyright information

© INRA and Springer Science+Business Media B.V. 2011

Authors and Affiliations

  • Juan A. Oliet
    • 1
  • José M. Salazar
    • 2
  • Rafael Villar
    • 3
  • Eduardo Robredo
    • 2
  • Fernando Valladares
    • 4
    • 5
  1. 1.Departamento de Silvopascicultura, ETS Ingenieros de MontesUniversidad Politécnica de MadridMadridSpain
  2. 2.Departamento de Ingeniería ForestalUniversidad de CórdobaCórdobaSpain
  3. 3.Area de EcologíaUniversidad de CórdobaCórdobaSpain
  4. 4.Instituto de Recursos Naturales, Centro de Ciencias MedioambientalesMadridSpain
  5. 5.Departamento de Biologia y Geología, Escuela Superior de Ciencias Experimentales y TecnologíaUniversidad Rey Juan CarlosMadridSpain

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