MAESTRI Damian Modesto
congresos y reuniones científicas
Water requirements and irrigation management in olive: improving water use efficiency in semiarid regions with dry winter season
PIERLUIGI PIERANTOZZI; MARIELA TORRES; DAMIÁN MAESTRI
Congreso; XIVth IWRA World Water Congress; 2011
The improvement of water use efficiency in olive cultivation is an issue of vital importance, with environmental and economic implications. In Argentina, the climatic pattern of the olive production areas is characterized by a marked water deficit during winter and spring months. A scientific experiment was carried out in an olive orchard at Córdoba province, Argentina. Four regulated deficit irrigation (RDI) treatments were imposed to olive trees (Olea europaea var. Arbequina and Manzanilla) at 0, 25, 50 and 75 % of Etc (determined using previously established crop coefficients and real-time reference crop water use), plus a control treatment of 100 % of Etc during all production year. The results showed that water stress imposed to olives trees during winter and spring months has a clear negative impact on tree productivity. Water deficit applied at the end of vegetative shoot growth affect flowering timing, and results in weakening of flowering, shortening of the fruit maturation period and, ultimately, decreased fructification. A scheduled irrigation strategy tending to conserve soil water content is useful to maintain top yields of high quality fruit.