Mariano Serrau is a guardian farmer from Ussassai committed to the conservation of the Trempa Orrùbia Apple, a traditional apple variety of Sardinia. His attention to the protection of this native cultivar contributes to keeping alive a genetic resource that represents the agricultural memory of his territory. Through the care of the trees and the management of the plants in the field, Mariano promotes the safeguarding of an ancient variety that is part of the local agricultural heritage, valuing the identity of island fruit productions.