Resurgent pests or invasive exotic pests (e.g., two new species of mealybugs, or the Trioza erytreae, transmitter of the Huanglongbing disease (HLB)) are major challenges of the Mediterranean citriculture). The solution could be to increase the presence and prevalence of natural enemies of pests through the introduction of plant biodiversity such as perimeter hedges, ground covers and flower strips.

A BioFruitNet practice abstract. Fertilization of organic fruit orchards strongly relies on authorized external commercial fertilizers leading to nutrient flows from conventional into organic farming systems. The use of alternative fertilizers including legume-based materials and non-contentious external commercial fertilizers, should be based on locally available resourced. An integrated approach is recommended.

A BioFruitNet practice abstract. Organic fruit orchards are dependent on commercial organic fertilizers derived from intensive conventional animal husbandry. These inputs are contentious and to be phased out. As a solution,  it is possible to develop new fertilization strategies based on farm internal resources (e.g., clover based), plant-based sources (e.g., grain legumes as living mulch in the tree row, cover crops).

Limited data regarding the resources and methods used by organic fruit growers to learn about production practices are available, even though this information is crucial to improving the efficacy of knowledge transfer. Therefore, a survey to gain information from knowledge networks dealing with organic fruit production about their structural organisation, tasks and methods of communication was carried out in twenty-one countries from Europe and the Mediterranean basin.

There is limited data regarding the specific problems faced by organic fruit growers when dealing with plant protection, particularly at a European Union level, though some general knowledge about pest and disease incidence can be found. Such information is crucial to improve the efficacy of a targeted knowledge transfer to organic fruit growers and advisors aiming at an increased adoption of innovative practices.

Apple scab is the primary fungal disease in apple cultivation affecting entire harvests as well as the following year's production. The damage can occur both in the plant and during storage. In organic farming, scab control is mostly carried out using precautionary measures. Plant protection products are used for direct control before the onset of rain and during spore germination as "scab stop".

Codling moth (Cydia pomonella) is the primary pest in organic fruit growing. It damages apple, pear, quince, rowan, medlar, walnut and kaki. Generations/years vary depending on the soil and climates zones. Several control methods can be applied in organic farming depending on the infection rate, but plant protection products and mating disruption are the most common. Choosing suitable methods may reduce the time for intervention in the field.