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A regulated deficit irrigation strategy for hedgerow olive orchards with high plant density

AuthorsFernández Luque, José Enrique ; Pérez Martín, Alfonso ; Torres Ruiz, José Manuel ; Cuevas Sánchez, Mª Victoria ; Rodríguez Domínguez, Celia M. ; Elsayed-Farag, S. ; Morales Sillero, Ana; García Martos, José M. ; Hernández Santana, V. ; Díaz-Espejo, Antonio
KeywordsFruit development
Irrigation efficiency
Olive oil
Super-high density
Water productivity
Issue DateNov-2013
CitationPlant and Soil 372(1–2): 279–295 (2013)
AbstractBackground & Aims There is not a consensus on the best irrigation approach for super-high density (SHD) olive orchards. Our aim was to design and test a regulated deficit irrigation (RDI) strategy for a sustainable balance between water saving, tree vigour and oil production. Methods We tested our RDI strategy for 3 years in an ‘Arbequina’ orchard with 1,667 trees ha−1. Two levels of irrigation reduction were applied, 60RDI and 30RDI, scaled to replacing 60 % and 30 %, respectively, of the of irrigation needs (IN). We also had a full irrigation (FI) treatment as control, with IN totalling 4,701 m3 ha−1 Results The 30RDI treatment showed the best balance between water saving, tree vigour and oil production. With a yearly irrigation amount (IA) of 1,366 m3 ha−1, which meant 72 % water saving as compared to FI, the reduction in oil yield was 26 % only. Conclusions Our results, together with recent knowledge on the effect of water stress on fruit development, allowed us to suggest a potentially improved RDI strategy for which a total IA of ca. 2,100 m3 ha−1 was calculated. Both some management details and the benefits of this suggested RDI strategy are still to be tested.
Description17 páginas, 5 figuras, 4 tablas, 78 referencias
Publisher version (URL)http://dx.doi.org/10.1007/s11104-013-1704-2
Appears in Collections:(IG) Artículos
(IRNAS) Artículos
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