In Portugal, traditionally, the maritime pine is the species exploited to obtain resin. The silvicultural models used assume timber as the main product and resin as the secondary product, this being a periodic and annual source of income for the owner. The description of silvicultural models that make timber and resin exploitation compatible is essential and should be based on knowledge.

Aromatic & Medicinal Plants
Control and certification of ecological medicinal and aromatic plants in Croatia
The role and importance of organic production lie in the sustainable management of natural resources (preserves soil fertility, flora and fauna, water and atmosphere), forbids