Abstract:Objective: This study aims to investigate single and combined fertilizer on the quantitative and qualitative characteristics of grain corn. Methods: The experiment design was randomized complete block at Urmia Research Station. The first factor of zinc element had four levels (0, 0.7, 1.4 and 2.1kg.ha-1) and the second factor of zinc element had four levels (0, 0.3, 0.6 and 0.9kg.ha-1). Results: The effects of zinc and iron factors for the traits of stem diameter, leaf area index, thousand seed weight,… Show more
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