Cultivars and rootstocks resistant or tolerant to pests, physiological disorders, fungal diseases, nematodes, viroids, virusesand/or phytoplasmas are preferred (Tristeza virus, Phythophtora,..)
When planting different cultivars in different plots of the same orchard, problems such as medfly, pollination and others should be considered.
Planting density and cultivation cycle must be adapted to local conditions.