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| DOI | 10.4067/S0718-16202016000100007 | ||||||
| Año | 2016 | ||||||
| Tipo | artículo de investigación |
Citas Totales
Autores Afiliación Chile
Instituciones Chile
% Participación
Internacional
Autores
Afiliación Extranjera
Instituciones
Extranjeras
The restoration of dry lands in the Mediterranean is a challenging task because harsh abiotic conditions hamper the counteraction of feed-back degradation processes. Active restoration through planting must be performed to deter this process. In this study, we tested the influence of mineral nutrition in the nursery (two formulations of controlled release fertilizer at two rates each) and tree protection after planting (by using tube shelters) on the nine-year performance of Acacia salicina irrigated with low-quality (saline) water. The overall survival at the end of the study period was 58.2%, with the electrical conductivity of the soil saturation extract reaching 5.4 dS.m(-1) after nine years. The survival and growth (in height) were greater for seedlings fertilized with more than 1.5 g.L-1 of 9-13-18, although the survival differences became significant only after the seventh year. The basal stem diameter (BSD) of seedlings that were fertilized at higher rates was significantly greater than those that were fertilized at lower rates during the first two years of planting; the differences were no longer present thereafter. The seedlings in shelters had marginally superior survival, faster growth during the first four years, and smaller BSD values after the third year compared to those of the unprotected seedlings. In comparison with a parallel study that was conducted under drought conditions, irrigation reduced some differences among treatments, but it increased others. These results emphasize the importance of the size and mineral nutrient status of nursery stock in irrigated plantations under dry Mediterranean conditions, with highly fertilized seedlings showing superior performance. Long-term planting studies are crucial for gaining a greater understanding of seedling performance and for providing a better rationale for treatment recommendations.
| Revista | ISSN |
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| Ciencia E Investigación Agraria Revista Latinoamericana En Ciencias De La Agricultura Y Ambientales | 0718-1620 |
| Ord. | Autor | Género | Institución - País |
|---|---|---|---|
| 1 | Oliet, Juan A. | Hombre |
Univ Politecn Madrid - España
Universidad Politécnica de Madrid - España |
| 2 | Planelles, Rosa | Mujer |
Univ Politecn Madrid - España
Universidad Politécnica de Madrid - España |
| 3 | Artero, Francisco | Hombre |
CSIC - España
Consejo Superior de Investigaciones Científicas - España CSIC - Estación Experimental de Zonas Áridas (EEZA) - España |
| 4 | Domingo-Santos, Juan M. | Hombre |
Univ Huelva - España
Universidad de Huelva - España |
| Fuente |
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| National Institute for Agriculture and Food Technology and Research |
| National Institute for Agriculture and Food Technology and Research (INIA, Spanish Department of Science and Innovation) |
| Technical University of Madrid through its sabbatical program |
| Agradecimiento |
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| We gratefully acknowledge the financial support of the National Institute for Agriculture and Food Technology and Research (INIA, Spanish Department of Science and Innovation) through projects SC-94111 and OT98-001) and the Technical University of Madrid through its sabbatical program. The comments of three anonymous reviewers substantially improved this manuscript. |