[Economics of revitalization of neglected scattered fruit trees]

apples bavaria carreteras cereza cerise cherries ciruela conservation de la nature costos costs horas laborables juglans labour malus manzana nature conservation noix nuez pears pera plums poda poire pomme profitability prune pruning prunus avium prunus domestica pyrus rentabilidad roads route site factors taille temps de travail trabajo travail walnuts working hours