Table 1:
Physical and chemical properties of the five desert sand samples.
Physical and chemical properties
Sample
Pt
Tp
Tt
Zs
Ss
C (mg/kg)
11
11
15
12
14
N-NH4 (mg/Kg)
1.1
1.3
1.2
1.1
1.7
N-(NO3+NO2) (mg/Kg)
0.7
1.6
2.5
1.8
1.2
P (mg/kg)
2.1
2
3
1.7
1.7
K (mg/kg)
33
54
59
38
48
pH
7.28
7.69
7.55
7.29
7.38