Maize (Zea mays L.) is an agricultural cereal crop grown mainly for grain, green fodder, and silage. The annual stable yields of maize grain depend both on the specific meteorological conditions during the respective economic year and on the used agronomy practices for growing the crop. The experiment has been carried out through the period 2017 - 2019 in the region of Dobruja, Bulgaria. The field trials have been conducted in the block method in four replications with the size of the experimental plot - 25 m2. The tested corn hybrids belong to 3 maturity groups, according to FAO classification – early, mid-early and mid-late. The experimental fields are located in various regions of the Dobruja region, to cover more soil and climate diversity. Grain yields were averaged over 4 replications, with the values equated to standard moisture of 14% and grain moisture at harvest. The average yields of maize grain obtained in Dobruja are lower than the national average. Divided into maturity groups, the PR38D89 hybrid is the most productive of the early ones, the PR37N01 hybrid the mid-early and the PR35F38 mid-late. Grain moisture shows a strong upward trend from early to mid-late hybrids, with a positive correlation between productivity and grain moisture.

maize, grain yields, grain moisture, Dobruja

agronomy

Presentation: poster