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Articles by Joao Ribeiro

Category : Research article

article id 10698, category Research article
Constança Camilo-Alves, Jose Antonio Nunes, Ana Patricia Poeiras, Joao Ribeiro, Cati Dinis, Joao M. Barroso, Margarida Vaz, Nuno Almeida-Ribeiro. (2022). Influence of water and nutrients on cork oak radial growth – looking for an efficient fertirrigation regime. Silva Fennica vol. 56 no. 3 article id 10698. https://doi.org/10.14214/sf.10698
Keywords: irrigation; mixed models; Quercus suber; climate–growth relationship; increments; stem radius
Highlights: Different summer fertirrigation treatments were tested on cork oaks over four years in a 1 ha plot; Radial growth, meteorological parameters and fertirrigation volume were measured every 15–30 days; During summer fertirrigated trees grew significantly more, independently of air vapor pressure deficit; Increments were linearly related with fertirrigation volume up to 140 m3 week–1.
Abstract | Full text in HTML | Full text in PDF | Author Info

The widespread cork oak (Quercus suber L.) mortality and reduced afforestation /regeneration are causing an overall reduction in cork production. To enhance trees’ growth and vitality, afforestation techniques using fertirrigation were tested. The main objective was the promotion of trees’ growth on new dense plantations using minimum water requirements until reaching productive forests. The experimental plot – Irricork – was installed in 2017 in a ≈1 ha stand with 14 years’ age cork oaks summer-fertirrigated since plantation. Four fertirrigation treatments were applied during fertirrigation campaigns. Radial growth, meteorological parameters and fertirrigation volume were measured every 15–30 days over four years. It was observed that weather, tree size, debarking and trees’ intra-competition had a significant effect on radial increments. Fertirrigation significantly enhanced growth during summer drought and decoupled increments from air vapor pressure deficit constraints. There was a linear relationship between trees’ radial increments and fertirrigation volume up to 140 m3 week–1. Above this value, increments were smoother. In conclusion, summer fertirrigation of 140 m3 week–1 efficiently enhanced the radial growth of trees with 50–75 circumference at breast height, under the particular edaphoclimatic conditions of the stand. This study showed to be, therefore, promising in the use of efficient fertirrigation the enhance cork oaks’ radial growth.

  • Camilo-Alves, MED – Mediterranean Institute for Agriculture, Environment and Development & CHANGE – Global Change and Sustainability Institute, Institute for Advanced Studies and Research, University of Evora, Pólo da Mitra, Ap. 94, 7006-554 Évora, Portugal ORCID https://orcid.org/0000-0001-5156-172X E-mail: calves@uevora.pt (email)
  • Nunes, Department of Plant Science, School of Science and Technology, University of Evora, Pólo da Mitra, Ap. 94, 7006-554 Évora, Portugal ORCID https://orcid.org/0000-0002-6144-3484 E-mail: jain@uevora.pt
  • Poeiras, MED – Mediterranean Institute for Agriculture, Environment and Development & CHANGE – Global Change and Sustainability Institute, Institute for Advanced Studies and Research, University of Evora, Pólo da Mitra, Ap. 94, 7006-554 Évora, Portugal ORCID https://orcid.org/0000-0002-6049-807X E-mail: apcp@uevora.pt
  • Ribeiro, Department of Plant Science, School of Science and Technology, University of Evora, Pólo da Mitra, Ap. 94, 7006-554 Évora, Portugal ORCID https://orcid.org/0000-0001-7242-5866 E-mail: jmrpr@uevora.pt
  • Dinis, ORCID https://orcid.org/0000-0001-6984-1033 E-mail: dinis.cati@gmail.com
  • Barroso, MED – Mediterranean Institute for Agriculture, Environment and Development & CHANGE – Global Change and Sustainability Institute, and Department of Plant Science, School of Science and Technology, University of Evora, Pólo da Mitra, Ap. 94, 7006-554 Évora, Portugal ORCID https://orcid.org/0000-0002-0160-3845 E-mail: jmmb@uevora.pt
  • Vaz, MED – Mediterranean Institute for Agriculture, Environment and Development & CHANGE – Global Change and Sustainability Institute, and Department of Biology, School of Science and Technology, University of Evora. Pólo da Mitra, Ap. 94, 7006-554 Évora, Portugal ORCID https://orcid.org/0000-0002-3368-757X E-mail: mvaz@uevora.pt
  • Almeida-Ribeiro, ICT – Institute of Earth Sciences and Department of Plant Science, School of Science and Technology, University of Evora, Pólo da Mitra, Ap. 94, 7006-554 Évora, Portugal ORCID https://orcid.org/0000-0002-0160-3845 E-mail: nmcar@uevora.pt

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