The sterile plant percentage depends on the type of hybrid, on the pedoclimatic conditions and on the used technology. Among the most influent technological chains are the fertilization, the plant density and, last but not least, the type of crop – irrigated or non-irrigated. This paper presents the sterile plant percentage variation during a trifactorial experiment in which the A-factor was the agrifond (N 100 , N 200 and N 300 on a constant base of P 100 K 100 ), the cultivation density (60.000; 70.000 and 80.000 plants/ha) and the cultivated hybrids, which for Romania were Andreea and Faur, and for Greece Lazaro and Varenne. În Romania, in non-irrigated cropping system, the sterile plant variation was of between 2 and 11,6%, and in Greece, in irrigated cropping system, of between 2 and 8%.

maize; sterile plants; agrifond; hybrid density

Presentation: oral