Evaluation of the Nutrient Status of Some Hydrophytes in the Water Courses of Nile Delta, Egypt

Table 1

Mean and coefficient of variation (CV) of some characters of soil (a) and water (b) samples collected from canals and drains in the Nile Delta (after El-Sheikh 1989).

(a) Soil

Water course	Sand%	Silt%	Clay%	OM%	CaCo3%	EC 𝜇mohs cm^−1	pH	N mg 100 gm^−1	P mg 100 gm^−1	K mg 100 gm^−1	Na mg 100 gm^−1	Ca mg 100 gm^−1	Mg mg 100 gm^−1
	Terrace Zone
Canal
Mean	44.9	42.9	11.9	6.3	3.4	1523	7.7	249	8.2	111	274	1980	263
CV	0.2	0.1	0.6	0.1	0.5	0.4	0.0	0.1	0.2	0.2	0.1	0.2	0.1
Drain
Mean	41.5	47.5	11.3	6.8	2.9	2479	7.8	204	11.8	84	340	1546	301
CV	0.1	0.1	0.9	0.1	0.4	0.1	0.0	0.2	0.2	0.2	0.1	0.1	0.1
	Slope Zone
Canal
Mean	42.8	45.2	11.8	6.8	2.1	418	7.8	256	7.7	80	137	1572	257
CV	0.1	0.0	0.4	0.2	0.2	0.3	0.0	0.2	0.1	0.3	0.1	0.2	0.1
Drain
Mean	40.8	43.2	15.9	7.7	2.3	2154	7.8	209	11.4	74	348	1518	322
CV	0.2	0.1	0.6	0.2	0.2	0.7	0.0	0.2	0.3	0.3	0.4	0.1	0.1

(b) Water

Water course	EC 𝜇mohs cm^-1	pH	N mg L^-1	P mg L^-1	K mg L^-1	Na mg L^-1	Ca mg L^-1	Mg mg L^-1	Co3 mg L^-1	HCO3 mg L^-1	Cl mg L^-1	So4 mg L^-1
Canals
Mean	350.0	7.7	1.6	0.5	17.3	80.0	39.5	9.2	21.0	183.0	62.0	334.3
CV	0.1	0.2	0.7	0.2	0.1	0.1	0.1	0.1	0.3	0.2	0.2	0.2
Drains
Mean	1385.0	7.6	1.4	1.0	19.3	157.9	57.0	12.3	31.1	300.1	232.0	364.5
CV	0.2	0.0	1.0	0.6	0.6	0.01	0.04	0.3	0.0	0.0	0.2	0.2