MAIZE IRRIGATION AT DIFFERENT WATER SUPPLYING LEVELS ON THE CLAY-ILLUVIAL CHERNOZEM FROM A.R.D.S. TELEORMAN

The research performed at A.R.D.S. Teleorman, during 2000-2002, had as aim the determination of soil-water-plant-atmosphere interrelations, under optimum water supplying conditions (100%) and at different levels of induced hydric stress (dryland, irrigated 25%, 50%, 75% from optimum irrigation rate) in maize, with a view to reduce the irrigation water consumption on the clay-illuvial chernozem. Based on the obtained results, it has been ascertained that it is possible to achieve yields of 7,000-10,000 kg grain/ha by irrigation with limited water rates [50%, 75 % respectively, from the optimum irrigation rate (50 % active moisture interval)]. The pluviometric regime, non-uniformly distributed during the vegetation period, soil drought (induced hydric stress) associate