The herein paper shows the average production and the mean of production differences (kg/ha, % ha) between conventional corn hybrids and Yield Gard (MON 810) corn hybrids made up in a comparative lot, in Horia, Arad county. As a result of hybrid production research, we’ve established the followings: - production amplitude varied from 5,538 kg/ha (DK 315) to 6,375 kg/ha (DKC 5783) – in the case of conventional corn and 6,017 kg/ha -7,327kg/ha, in the case of YG corn YG (DKC 3946 and DKC5784); - the mean production difference between the 4 conventional hybrids, compared to the 4 genetically modified hybrids (MON 810) varied from 479 kg/ha, at DKC 315 hybrid (290 FAO) up to 1009 kg/ha – DKC 5143 hybrid (410 FAO); - in percentages, production losses varied from 7.95% DK 315 hybrid up to  14.17% at DKC 5143 – table 67, percentage average of production losses, in the case of our experiment was of 11.03%, which means a great economic loss.

production; conventional corn; YG corn; Ostrinia; Fusarium

Presentation: oral