in order to evaluate intercropping of barley (hordeum vulgare) and vetch (vicia vilosa ler ssp. desycarpa), two field experiments were conducted on the farm of the university of tehran, karaj, iran in 2004 and 2005. a split plot experiment based on randomized complete block design (rcbd) with four replications was used in this study. nitrogen was the main factor (0, 45 and 90) and sub plot fact...
