The research was conducted during the maize vegetation in 2019 on the demonstrational-educational fields of the Faculty of Agrobiotechnical Sciences Osijek (45.51'79 '' north latitude, 18.77'83 '' south latitude). Sowing was done on April 18, 2019 with a pneumatic six-row seed drill at a row spacing of 70 cm. A total of six maize hybrids from different FAO groups of the Bc Institute from Zagreb were grown (FAO 330 - BC 323, FAO 390 - Agram, FAO 410 - Tesla, FAO 450 - BC 415, FAO 490 - Instruktor and FAO 570 - Majstor). According to the seed manufacturer’s recommendation, there was 78,000 plants per hectare for FAO Group 300 hybrids, 74,000 plants per hectare for FAO Group 400 and 70,000 plants per hectare for FAO Group 500. The field experiment was set up in 3 repetitions where the area of the basic plot was 10 m2 and consisted of two rows of maize with a length of 14.3 m. The year was extremely favorable in terms of precipitation and air temperature. During maize vegetation, a total of 502 mm of precipitation fell, which is compared to the long term average of 1961-1991 increase by 36%. As for the average values of air temperature in 2019, in the vegetation period from April until September was 19.5˚C, which is an increase of 11% compared to long term average values. Given the almost ideal conditions for the growth and development of maize, extremely high average yields of 15.9 t/ha were achieved. The highest yields were achieved by Majstor hybrids (18.3 t / ha) with a moisture content of 14.8% and Agram (17.4 t / ha) with a moisture content of 13.7%, and the lowest average yield was achieved by Tesla hybrids (14 , 3 t / ha) with an average humidity of 13.9% and a hybrid BC 323 (14.4 t / ha) with an average moisture of 13.1%. All other analyzed parameters were statistically significant except for stem height and grain moisture.