Effect of waste water irrigation on some growth parameters of Delonix elata

Abstract EN

Three forms of waste water namely; untreated, secondary treated and finally treated beside tap water, as a control, were used to irrigate Delonix elata (L.) Gamble plant for 103 days.

Some growth parameters as pigment content of the leaves (chlorophyll a, b and ca-rotenoids), shoot and root systems lengths and leaf area, as well as fresh and dry weight of the root and shoot systems were detected.

Also, some plant metabolites as total proteins, total amino acids and organic matter content were also estimated.

The untreated waste water had a lethal effect on D.

elata plants at age of 103 days.

Finally treat-ed waste water was the best tested water for pigment formation by the plant leaves.

Whereas tap water was responsible for the highest values of shoot and root systems lengths and leaf area, as well as, for fresh and dry weight of plant systems.

However, secondary treated waste water was the prime for the production of D.

elata metabolites of total proteins, total amino acids and organic matter.