Companion plants are tree or shrub species that do not enter into mycorrhizal symbiosis with fungi of the genus Tuber, but promote soil and ecosystem conditions that support the growth of symbiotic plants and the truffle-producing mycelium itself.

Agronomic role of companion plants:

• they support the development of the root system of symbiotic plants;
• they maintain ideal moisture levels in the surface layers of the soil;
• they mitigate thermal imbalances in the root zone;
• they promote the coexistence of useful plant biodiversity in the truffle ground.

Why Include Companion Plants in the Truffle Ground?

Plant association with companion plants can be useful for creating a stable and favorable microenvironment for symbiotic plants. Rotorscio37 evaluates on a case-by-case basis whether and where to include companion plants, based on soil characteristics, the chosen truffle species, and the planned agronomic management.

Potential benefits:

• better water and microclimatic balance during the first years of planting;

• natural protection for the mycelium and symbiotic roots;

• increase in the functional biodiversity of the truffle ground;

• creation of a richer and more resilient cultivation habitat.