Effect of Irrigation Water Types and Spraying With Seaweeds on
Vegetative Growth, Biochemical Attributes and Minerals Contents
of Ziziphus mauritiana and Citrus sinensis Seedlings
Abbas, Karima F.1; Khawla H. Mohamad2 and Salwa J. Fakher3
1Kerbala University, College of Applied medical Science, Department of Environmental
health.
2Basrah University, College of Agriculture, Department of Horticulture and Landscape.
3Basrah University, College of Agriculture, Department of Soil Sciences and Water
Resources.
Received on: 18/9/2016 Accepted for publication on: 27/9/2016
Abstract
This experiment aimed to investigate the effect of the different irrigation water
sources and spraying with seaweeds on the seedlings of two plants one is saltsensitive
(Citrus sinensis) and the other is salt-tolerant (Ziziphus mauritiana)
through studying growth parameters, as well as biochemical attributes and minerals
in leaves of the studied plants. Four treatments were used for irrigation water
as follow: (W1)The Tap Water (control) E.c = 1.2 dS.m-1, (W2) Shatt al-Arab
river (sub river) Ec = 5.2 dS.m-1, (W3) Shatt al-arab river (main) 6.2 dS.m-1,
(W4) The well water E.c = 8.1 dS.m-1 with 3 levels (A1, A2, A3) of seaweed
treatments prepared from (Agrosign marine) in the concentration of (0, 2, 4 ml
/L), The results explained that there is a decrease in all parameters in this study
with increasing the salinity of irrigation water and this is represented in well water
irrigation as compared with another water types, while the interaction withseaweeds
treatments caused significant increases in the growth parameters, biochemical
attributes and minerals contents. This promotion was associated with
increasing the concentrations to (4 ml /L), Which gave 42.94 cm in plant height,
2.00 number of shoots, 24.61 in the number of leaves, 5.34 in stem diameter,
101.2 g in fresh weight and 19.02 g dry weight. On the other hand the interaction
with seaweed extract increased significantly growth parameters, attributes biochemical
and mineral content, it gave the highest value A3W1 which was 3.48
mg /g in the total chlorophyll and 73.82 mg/g in total carbohydrates, while the
lowest at A1W4 which was 1.38 mg/g in the total chlorophyll and 42.92 mg / g
in the total carbohydrates. The activities of the enzymes superoxide dismutase
(SOD), peroxidase (POD) and catalase (CAT) have shown a marked increase
when increasing the level of salinity in irrigation water as well as, the seaweeds
extraction caused increasing in the content of these enzymes. The treatment
(A1W4) gave the highest enzymes activities CAT, SOD, BOD which was 24.10,
21.83 and 7.93 u / g / f.w respectively.
