This study was carried out on a 17 years Vineyard (Helwani,
Betamooni. Cvs) when the study started. Two deficit irrigation
treatments were studied (%88, 60%), in addition to the control (full irrigation), and each treatment included three replicati
ons. Drip irrigation technique was applied (one irrigation line for each tree line, and eight drippers for each tree). Fruit yield and sugar
percentage were observed under different water treatments.
