Climate change will force producers in the Perfumed Plants Aromatic and Medicinal (PPAM) sector to adapt their production itineraries and growing methods to cope with an increase in abiotic stress (particularly water stress), which could lead to the disappearance of PPAM from certain production basins that are not very favourable. Providing shade for crops could be one way of limiting these stresses and making crops more resilient to climate change. Various shading solutions are conceivable, such as shades, nets for arboriculture, agrivoltaics or agroforestry (an agricultural practice combining trees and crops on the same plot). Agroforestry is an interesting option for innovative agro-ecological itineraries, because of the microclimate generated by the presence of trees.

The aims of this project are:

- To characterise the physiological and metabolic responses to shading of PPAM in drought conditions

- To evaluate the agronomic performance of PPAM under agroforestry shade and select the most suitable agroforestry systems.

- To encourage PPAM producers to adopt agroforestry.

PSH is more specifically involved in task 2.3. and is studying the impact of shading on the emission of volatile organic compounds (VOCs) by PPAM introduced into the orchard could promote the biocontrol of pests in arboriculture.