Valorizzazione della biodiversità frutticola in Sicilia: caratterizzazione qualitativa di vecchie varietà di melo.

Caratteristiche pomologiche e sensoriali di frutti di melo coltivati in regime biologico.

Water status, growth, yield and fruit quality of 'Valencia' orange trees under partial root-zone drying

Deficit irrigation does not affect alternate bearing of ‘Valencia’ orange trees

This study evaluated the effect of long-term partial rootzone drying and continuous deficit irrigation on the degree of alternate bearing of adult ‘Valencia’ orange trees grown in northern Sicily. Three irrigation strategies were imposed in summer from 2007 to 2011: irrigation with volumes corresponding to 100% of crop evapotranspiration applied to entire rootzone (CI), partial rootzone drying (PRD) with 50% of CI water applied to one alternated side of the rootzone, and continuous deficit irrigation (CDI) with 50% of CI water applied to both sides of the rootzone. The experiment was conducted on 48 adult orange trees arranged according to a randomized block design. Weather and soil paramet…