The maximum permitted nitrogen input (expressed in kg N/ha/year and per ton of olives harvested per ha) and period of application (e.g. when soil is saturated by rainfall) must be defined in the guidelines.

It is recommended that in established olive-groves the maximum amount of nitrogen is set at 15kg N (per ha and year) per ton of olives harvested. In any case, the expected production has to be taken into account especially in case of alternating production.

Nitrogen supply must remain an alternative and not the base of the fertilization and the use must be justified.

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