Fig. 1. Effect of partial root-zone irrigation on soil water content under different
ratios of inorganic to organic N fertilizers. Data points are means
standard
deviations (n = 3). Different letters indicate significant difference (P < 0.05). F
: 100%
inorganic N; F
2
: 70% inorganic N + 30% organic N; F
: 40% inorganic N + 60% organic N.
CI: soil was evenly irrigated with tap water in each watering. For FPRI treatment, the
half of the soil in the pot irrigated was considered as wet root-zone (FPRI-W) and not
irrigated as dry root-zone (FPRI-D). For APRI treatment, the half of the soil in the pot
irrigated before soil sample taken was considered as wet root-zone (APRI-W) and not
irrigated as dry root-zone (APRI-D) in the consecutive watering.