Comparison of drip, pipe and surge spring root irrigation for Jujube (Ziziphus jujuba Mill.) fruit quality in the loess plateau of China

Abstract

Loess Plateau is a typical rain-fed farming region, facing the threat of drought. Irrigation method is among the most important factors affecting jujube quality. This study investigated the response of Ziziphus jujuba Mill. cv. Lizao quality to three different irrigation methods (drip-, pipe- and surge spring root irrigation) combining two water levels (20 m3/hm2 and 120 m3/hm2). The effects of the trials were evaluated by taking into account the physical-chemical characteristics of jujubes and the antioxidant activity. Concomitant to this, the concentration of some taste-related (viz. glucose, fructose, TSS and malic acid) and health-related compounds/parameters (viz. catechin and epicatechin) were generally much greater in jujube fruit treated with drip irrigation (120 m3/hm 2). Different irrigation treatments had no significant effects on antioxidant capacity, total phenolics and proanthocyanidins (except for pipe irrigation 20 m3/hm2). The best compromise between quality and irrigation of jujube fruit was achieved with drip irrigation (120 m 3/hm2). © 2014 Gao et al.