Slow-controlled release fertilizers used in nursery seedling productions. Doses and formulations effects on Pinus halepensis Mill. seedling quality

  • J. Oliet Universidad de Córdoba
  • M. L. Segura Junta de Andalucía
  • F. Martin Dominguez Universidad Politécnica de Madrid, Madrid
  • E. Blanco Universidad Politécnica de Madrid, Madrid
  • R. Serrada Universidad Politécnica de Madrid, Madrid
  • M. Lopez Arias INIA
  • F. Artero INIA
Keywords: Pinus halepensis, Mineral nutrition, Seedling quality, Slow release fertilizers

Abstract

The results of applying three doses of coated slow release fertilizers OSMOCOTE 9-13-18 (1.5; 3.25 and 5 g/l) and OSMOCOTE 16-8-9 (3.25; 5 and 7 g/l) in producing Pinus halepensis seedlings are evaluated. Mixing the fertilizer in the growing media increased the salinity, but didn’t affect the germination and survival of the seedlings. N and P leach concentrations were correlated with the application rates, but K wasn’t. N, P and K shoot concentrations at lifting were correlated with the doses applied, although the relationship between K and doses was the weakest. Shoot growth responded significantly only to N doses. The relative N proportion in OSMOCOTE 9-13-18 was deficient, and OSMOCOTE 16-8-9 had a K deficient ratio, due to the dilution effect observed. The mineral nutrient uptake efficiency decreased in response to the dosis, but was higher than observed in liquid fertilizer injection methods.

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Published
1999-06-01
How to Cite
OlietJ., SeguraM. L., Martin DominguezF., BlancoE., SerradaR., Lopez AriasM., & ArteroF. (1999). Slow-controlled release fertilizers used in nursery seedling productions. Doses and formulations effects on Pinus halepensis Mill. seedling quality. Forest Systems, 8(1), 207-228. https://doi.org/10.5424/612
Section
Research Articles