In 2009, balanced soil and air temperature resulted in steady emergence. However, the low temperature in early April and the cooling down in mid-May 2010 caused a delayed emergence.
The grain moisture content at harvesting and the high yield showed a strong crop year effect. In 2010, yield was much lower (1.664 t ha-1) and grain moisture was significantly higher (34%)than in 2009.
In 2009, early sowing resulted in yield decrease (P<0.05), but it also significantly reduced grain moisture at harvesting (P<0.05). Although late sowing slightly increased yield (not significantly), but grain moisture at harvesting increased by 9.2%. In 2010, optimal sowing date was shown to be the best alternative from the aspect of yield, but there was no significant difference in comparison with early and late sowing. Grain moisture at harvesting greatly increased (13.3%).
The Debreceni 382 maize hybrid reacted to sowing dates flexibly, neither early, nor late sowing affected its yield significantly and the grain moisture at harvesting showed 12% increase in the case of the late sowing date. In 2009, maize hybrids Debreceni 285 and Debreceni 377 reached their highest yield in the case of the sowing date which was shown to be optimal (23rd April), while the different sowing dates had no effect on yield in 2010.
Publication Ethics and Malpractice Statement of Acta Agraria Debreceniensis: The journal follows the CODE OF CONDUCT AND BEST PRACTICE GUIDELINES FOR JOURNAL EDITORS announced by the Committee on Publication Ethics.
University Of Debrecen
Faculty Of Agricultural and Food Sciences and Environmental Management
Institute Of Land Utilisation, Regional Development and Technology
4032 Debrecen, Böszörményi út 138.
(06 52) 508-463