رضا تقی‌زاده,

[ 1 ] - تأثیر کود نیتروژن بر کارآیی مصرف کود و اجزای عملکرد در ارقام ذرت

In order to evaluate the effects of nitrogen fertilizer levels on grain yield and nitrogen use efficiency in corn cultivars, a split plot experiment based on randomized complete block design with three replications was conducted at the Research Farm of Islamic Azad University of Ardabil during 2006-2007 cropping seasons. Factors consisted of nitrogen fertilizer at four levels (0, 80, 160 and 24...