Modelling the Effects of Soil Conditions on Olive Productivity in Mediterranean Hilly Areas

Figure 2

Fertility levels in the topsoil (0–20 cm): (a) organic matter, (b) total nitrogen, (c) mineral nitrogen, (d) Olsen phosphorus, (e) extractable potassium, and (f) extractable boron.

(a)

(b)

(c)

(d)

(e)

(f)