The construction of the system started in May 2007 and thefirst
irrigation took place in June 2007. Pots of 0.4 m diameter and 0.5 m
depth capacity werefilled until the height of 0.4 m with clay-loamy
soil and placed in a square of 1 m intervals. Each pot contained only
one plant. The physical and chemical characteristics of the soil and
fertilizer that was used tofill the pots are presented inTable 1