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

Table 3

Leaf mineral composition of main macro- and micronutrients and olive fruit yield.

Parameter	Deficiency thresholds	Number of trees below deficiency threshold	Minimum	Mean (±standard error)	Maximum
Leaf N concentration (g kg^−1)	14.0	34	9.5	12.9 (±0.2)	15.6
Leaf P concentration (g kg^−1)	1.0	29	0.7	1.0 (±0.2)	1.4
Leaf K concentration (g kg^−1)	4.0	24	1.2	4.4 (±0.3)	10.7
Leaf Cu concentration (mg kg^−1)	5.0	4	2.50	5.80 (±0.28)	10.0
Leaf Fe concentration (mg kg^−1)	Unknown	N/A	25.0	56.8 (±2.68)	110
Leaf B concentration (mg kg^−1)	14	5	12.8	18.2 (±0.57)	29.4
Leaf Mn concentration (mg kg^−1)	20	6	15.0	19.0 (±0.56)	25.0
Leaf Zn concentration (mg kg^−1)	Unknown	N/A	9.0	12.7 (±0.31)	15.5
Fresh fruit yield ()	N/A	N/A	6	30.2 (±2.26)	65

Deficiency thresholds as suggested by Freeman et al. (2005) [35].