Growth response of grafted and ungrafted citrus trees to saline irrigation

Catherine Simpson, S.D. Nelson, J.C. Melgar, J. Jifon, S.R. King, G. Schuster, A. Volder

Research output: Contribution to journalArticlepeer-review

Abstract

As population and agricultural pressure on high quality fresh water resources increases, it becomes more important to identify rootstocks and production techniques that allow the usage of lower quality water in irrigated agriculture. Water of 0, 1, 3, 5 and 10dSm−1 salinity was applied to grafted (with Olinda Valencia (Citrus sinensis var. Olinda) scion) and ungrafted sour orange (Citrus aurantium L.), C22, and C146 (Citrus sunki Hort. Ex Tan.×Poncirus trifoliata L. Raf. ‘Swingle') trees to evaluate the effect of grafting and rootstock variety on salinity tolerance. Grafted rootstocks had a lower survival rate at higher salinity concentration than ungrafted trees and effects were dependent upon tree variety. Height growth rate and standing leaf area of grafted citrus trees declined with increased salinity concentrations while the response of ungrafted and grafted citrus trees was variety dependent. Mortality increased and standing leaf area decreased with increasing tissue Na+ and Cl−
Original languageEnglish
Pages (from-to)199--205
JournalScientia Horticulturae
StatePublished - Apr 2014

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