The similarity between the effective areas per dripper
line (Fig. 4b) in the one-side system with its larger water volume
per dripper line and its wider ranges of variation in soil water content
and soil solution concentration within its smaller root zone,
on the one hand, and the two-side system with its smaller water
volume per dripper line and narrower ranges of variation in soil
water content and the soil solution concentration within its larger root zones (Fig. 5), on the other hand, indicates that the two systems
provided similar integrated root-growing conditions around
the drip line.