The researches were performed in Tecuci Plain during three years (2003-2005) in order to determine the level of watering norm diminution without to affect significantly the yield and the choosing of the best hybrids, which under limited water supplying lead to the obtainment of high and stable yields. The results showed that, by the watering norm diminution with 25% vs. pedological one, the irrigation water cost is reduced with 380-400 RON/ha. The recommended hybrids for the irrigation under stress are PR35P12 and PR3824.

irrigation; stress; watering norm; limited water supplying; hybrid; yield cost; benefit

Presentation: oral