Effect of deficit irrigation and reclaimed water on yield and quality of grapefruits at harvest and postharvest
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AuthorRomero Trigueros, Cristina; Parra Gómez, Margarita; Bayona Gambín, José María; Nortes Tortosa, Pedro Antonio; Alarcón Cabañero, Juan José; [et al.]
SponsorsThis study was supported by two CICYT projects (AGL2010-17553 and AGL2013-49047-C2- 515 2-R) projects and SENECA-Excelencia Científica (19903/GERM/15).
Bibliographic CitationROMERO TRIGUEROS, Cristina et al. Effect of deficit irrigation and reclaimed water on yield and quality of grapefruits at harvest and postharvest. LWT – Food Science and Technology, 2017, 18(B), pp. 405-411 DOI: org/10.1016/j.lwt.2017.05.001
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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. T W-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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