IRRIGATION REQUIREMENTS OF OLIVE TREES AND RESPONSES TO SUSTAINED DEFICIT IRRIGATION
Predawn leaf water potential (LWP) measurements suggest that irrigation-related tree water stress occurs with Kc values of 0.55 or less. The most important yield components affected by deficit irrigation were fruit yield and fruit value. Fruit yield ranged from 10500 to 22100 kg/ha for the lowest and highest irrigation rates, respectively. Fruit values for those treatments were 0.328 and 0.558 $/ha, respectively. These was a strong correlation between revenue and applied water up to about 950 mm. Using two linear expressions to describe this relationship, revenue per unit of applied water was $0.585/m3 from 250 to 600 mm and $2.39/m3 from 600 through 950 mm.