Parameter Sea water (S1) Aquaculture effluent (S2)
pH 7.8 8.0
EC (dS/m) 41.9 43.97
Ca2+ (me/l) 16.3 17.3
Mg2+ (me/l) 27.2 30.9
Na+ (me/l) 362.0 377.0
Carbonates (me/l) Nil Nil
Bicarbonates (me/l) 7.6 8.6
SO42- (me/l) 11.7 10.9
RSC (me/l) (me/l) Nil Nil
SAR 77.6 76.8
Cl- (me/l) 391.0 413.0
Total N (mg/l) 60.6 71.2
P (mg/l) 1.5 1.75
K (mg/l) 133.0 222.0
Table 2: Chemical characteristics of sea water (S1) and aquaculture effluent (S2) used as irrigation water in the experiment.