Chemical and Physical Characteristics in Uncultivated Soils with Different Lithology in Semiarid Mediterranean Clima
Table 4
Availability of nutrients in uncultivated soils in Crete and recommended values for fertilization in olive trees (recommended values obtained from TDC-OLIVE European project). Values in parentheses are standard deviation.
Sites
Available K+ kg/ha†
Recommended K+ kg/ha
Available Mg2+ kg/ha
Recommended Mg2+ kg/ha
Available Ca2+ kg/ha
Recommended Ca2+ kg/ha
Available P-PO4 kg/ha
Recommended P kg/ha
Available N-NO3 kg/ha
Recommended N kg/ha
O
0.13 (0.06)
0.17 (0.07)
0.01 (0.01)
0.003 (0.002)
0.007 (0.004)
La
0.30 (0.07)
0.59 (0.13)
0.07 (0.06)
0.004 (0.002)
0.008 (0.005)
U
0.17 (0.14)
300
4.19 (0.77)
20–34
0.01 (0.01)
360–714
0.001 (0.0002)
9–16
0.020 (0.005)
150 kg/ha
Ka
0.16 (0.12)
0.26 (0.06)
0.02 (0.03)
0.002 (0.001)
0.008 (0.001)
Kb
0.52 (0.21)
0.13 (0.01)
0.03 (0.03)
0.002 (0.001)
0.019 (0.026)
PL
0.24 (0.09)
0.38 (0.05)
0.33 (0.49)
0.003 (0.003)
0.045 (0.010)
Calculations considered bulk value of 1.3 g/cm3 whereas all calculations were obtained for upper 20 cm of soil depth.
