Titrated acidity (TA) was determined by titration with NaOH
with phenolphthalein as indicator. Vitamin C content (Vc) was
measured by 2,6-dichlorophenol-indophenol titration (AOAC,
1990). Five samples were measured for each treatment. Yield
water use efficiency was calculated and expressed as WUEET
(total fruit yield per water amount consumed).
2.6. Data analysis
Data were statistically analyzed by a complete randomized
model using SAS 6.12 (SAS Institute Ltd., USA). All the
treatment means were compared in the same row for any
significant differences using the Duncan’s multiple range tests
at a significance level of 0.05.