B7 - Agroforestry systems

Technical action B7

  

Removal of nitrates from the soil through agroforestry systems

 Agroforestry systems are based on intercalating, into an agrarian field, tree species with the aim of increasing the global production of the plot, diversifying production and improving the environmental quality of the farming.

The trees spread their roots beneath the roots of the crop, so that they benefit from the management applied on the agrarian part (weed treatments, fertilizations, etc.). For this reason, the trees in agroforestry systems grow faster than if they had been planted in an only-forestry plantation. Meanwhile, the agrarian part benefits from the presence of the trees, which reduces wind speed and improves the microclimate (more humidity, extreme temperatures softened).

Trees absorb nutrients not used by the agrarian production, and also water and other nutritional resources that return to the system later as organic matter (leaves, bark, etc.), as well as improving soil structure and permeability. The trees that are planted in these proving experiences are producing quality hardwood species; for example, walnut, ash, sycamore or maple and princess tree.

 Progress / Results

Objectives B7 Agroforestry systems

  • Implementing agroforestry systems properly in two farmings, according to similar actions observed in southern France.
  • Evaluating the effect of planting agroforestry systems in terms of nitrogen capture efficiency and estimating the costs / benefits associated with introducing this measure in an agrarian tillage. 

Localization B7 - Agroforestry systems