Survival analysis of orange tree varieties in Spain

  1. Alcon, Francisco 1
  2. Fernández-Zamudio, M. Angeles 2
  3. López-Becerra, Erasmo I. 1
  4. de-Miguel, M. Dolores 1
  1. 1 Universidad Politécnica de Cartagena, España
  2. 2 IVIA, Centro para el Desarrollo de la Agricultura Sostenible (CDAS), Valencia, España
Revista:
Spanish journal of agricultural research

ISSN: 1695-971X,  2171-9292

Año de publicación: 2019

Volumen: 17

Número: 1

Tipo: Artículo

DOI: 10.5424/SJAR/2019171-14067 DIALNET GOOGLE SCHOLAR lock_openDialnet editor

Otras publicaciones en: Spanish journal of agricultural research

Resumen

The fundamental basis of Spanish citriculture is its varietal composition, which contributes to the existence of a marketing calendar that extends to almost the entire year. As time goes by, the supply of varieties is continuously renewed, requiring significant investments by growers. The guarantee of a quality supply to the markets, on one hand, and the optimal result of the investments made, on the other, require that, in managing the sector, the characteristics determining the survival of the varieties be taken into account. The main purpose of this study was therefore to assess the influence of the attributes affecting the longevity of orange plantations from a technical and commercial point of view. The duration analysis technique applied to the different varieties has been used. The main attributes determining the elimination of a variety were the presence of seeds in the fruit and the tendency towards a decrease in surface size. Permanence- or survival-friendly attributes included the calibre (large size of the variety, within its group) and the price received by farmers. Precocity, frost resistance, commercial quality and resistance to fruit fly did not have the expected level of significance.

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The fundamental basis of Spanish citriculture is its varietal composition, which contributes to the existence of a marketing calendar that extends to almost the entire year. As time goes by, the supply of varieties is continuously renewed, requiring significant investments by growers. The guarantee of a quality supply to the markets, on one hand, and the optimal result of the investments made, on the other, require that, in managing the sector, the characteristics determining the survival of the varieties be taken into account. The main purpose of this study was therefore to assess the influence of the attributes affecting the longevity of orange plantations from a technical and commercial point of view. The duration analysis technique applied to the different varieties has been used. The main attributes determining the elimination of a variety were the presence of seeds in the fruit and the tendency towards a decrease in surface size. Permanence-or survival-friendly attributes included the calibre (large size of the variety, within its group) and the price received by farmers. Precocity, frost resistance, commercial quality and resistance to fruit fly did not have the expected level of significance. Additional keywords: longevity; duration analysis; attributes; varietal composition; introduction of varieties. Abbreviations used: AIC (Akaike information criterion); BIC (Bayesian information criterion); EU (European Union); LR (likelihood ratio). Authors’ contributions: Conceived and designed the research and obtained funding: FA and MDM. Drafted the manuscript: MDM and EILB. Critical revision of the manuscript for important intellectual content: MAFZ and FA. Statistical analysis: EILB, FA and MDM. All authors participated in the acquisition, analysis, and interpretation of data and supervised the work. Citation: Alcon, F.; Fernández-Zamudio, M. A.; López-Becerra, E. I.; De-Miguel, M. D. (2019). Survival analysis of orange tree varieties in Spain. Spanish Journal of Agricultural Research, Volume 17, Issue 1, e0103. https://doi.org/10.5424/sjar/2019171-14067 Received: 10 Oct 2018. Accepted: 15 Feb 2019. Copyright © 2019 INIA. This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International (CC-by 4.0) License. Funding: Spanish Ministry of Science, Innovation and Universities [AGRISERVI project: AGL2015-64411-R (MINECO/FEDER)]. Competing interests: The authors have declared that no competing interests exist. Correspondence should be addressed to M. Dolores de-Miguel: md.miguel@upct.es

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