The experiment had the objective of evaluating agronomic performance of commercial maize cultivars, recommended for the northern part of the São Paulo state, in regular and late growing season. The experiments were carried out in the FCAV/UNESP, Jaboticabal campus, São Paulo state, Brazil, the first experiment being conducted in off season in 2000 and the regular second in the regular season of 2000/2001. Fifteen commercial cultivars were sown in both experiments using a randomized-blocks design with three replications. The plots had 4 lines measuring 5 meters each. The results showed that environmental conditions reduced yield in off-season, the cultivars DKB 440 and DKB 350 being the most productive. The greatest yields were obtained in regular season, with Dina 657 and AG 9090 cultivars.
Zea mays; development; sowing dates; hybrids
