Effects of saline reclaimed waters and deficit irrigation on Citrus physiology assessed by UAV remote sensing
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AutorRomero Trigueros, Cristina; Nortes Tortosa, Pedro Antonio; Alarcón Cabañero, Juan José; Hunink, Johannes E.; Parra Gómez, Margarita; [et al.]
PatrocinadoresThis study was supported by two CICYT (AGL2010-17553 and AGL2013-49047-C2-482 515 2-R) projects and SIRRIMED (KBBE-2009-1- 2-03, PROPOSAL N◦245159) 483 project. We are also grateful to SENECA–Excelencia Científica (19903/GERM/15) for 484 providing funds for this research.
Fecha de publicación2017-03
Cita bibliográficaROMERO TRIGUEROS, Cristina et al. Effects of saline reclaimed waters and deficit irrigation on Citrus physiology assessed by UAV remote sensing. Agricultural Water Management, 2017, 183, pp. 60-69. DOI: 10.1016/j.agwat.2016.09.014.
Soluble solid content
The aim of our research was to discover the effects of the long-term irrigation with saline reclaimed (RW) and transfer (TW) water and different irrigation strategies: control (C) and regulated deficit irrigation (RDI) on yield and fruit quality of grapefruit at harvest and during cold storage. TW-RDI treatment decreased tree canopy (TC) and crop load, resulting in a 21% reduction of fruit yield. Regarding fruit quality, RW notably decreased peel thickness at harvest (about 8%); however, this difference was not remained during cold storage. Sugar/acid ratio was mainly increased by RDI, but also by RW, due to an important increase in soluble solid content (11% of average value for TW-RDI, RW-C and RW-RDI). In addition, RDI combined with RW, significantly increased the number of fruits in small category 5 at the end of cold storage. Finally, neither ratio yield/TC nor irrigation water productivity were affected by any irrigation treatments.
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