Table 1.

Indicative values of net N removal in mature trees (immobilized N in the skeleton, in the fruits and in the pruning wood) per fruit yield. The data refer to crop situations in which the production charge was high and the relationship between fruit production and vegetative activity is balanced (Source: [32]).

Tree Species	Net N Removal (g N/kg Fresh Fruit)
Apple	0.9
Peach	2.7
Pear	1.7
Orange	3.7
Walnut	10
Olive	22
Kiwi	4.5