The researches were performed at NARDI Fundulea during 2004-2006, as a poly-factorial experiment. At A factors (crop technology) two graduations were tested, at B factor (irrigation regime) six graduations were tested and at C factor (genotype) three graduations were tested. The agricultural year 2004-2005 was excessively rainy, the annual rainfall sum being of 1138.7 while 2005-2006 was droughty, the annual rainfall sum being of 494.5 mm vs. multi-annual average of 584.4 mm. From the temperatures viewpoint, the agricultural year 2004-2005 was normal, the annual average of 10.8 degree C being very close of multi-annual average, 10.6 C and year 2005-2006 was almost normal, annual average exceeding multi-annual one with only 1.2 C. The paper presents the average of the two years of research. The crop technology brings a gain of 20.4 q/ha in variant N180P60, 70,000 pl/ha vs. variant N100P60, 40,000 pl/ha, the gain being statistically ensured as very significant. Among irrigation variants, the highest gain, 14.25 q/ha, was achieved by irrigation variant of 50% active moisture interval on 80 cm depth, with half of norm by sprinkling, vs. non-irrigated variant, the gain being statistically ensured as very significant. Close values of the maximum yield gain were registered by the irrigation variant 50% active moisture interval, on 80 cm depth, whole irrigation norm by overhead irrigation. In this case, the gain was 13.89 q/ha, statistically ensured as very significant. Among tested genotypes, the highest yield gain was given by hybrid Campion, 10.98 q/ha, statistically ensured as very significant.

limited water supplying; watering rate; genotype; irrigation norm

Presentation: oral