Effect of Interaction Between Varieties and Row Spacing:differences among faba bean varieties concerning seed,Combined data presented in Table 4 showed that thebiological and protein yields and there components. interaction between faba bean varieties and row spacing had significant effect on all studied characters. ResultsEffect of Row Spacing: Data presented in Table 3 showed in Table 4 showed that number of branches, number ofthat there were significant differences between rowpods per plant, pods yield per plant and seed yield perspacing in all studied characters. Results indicated thatplant were gradually reduced by increasing plant population density in all tested varieties. On contrary, in7. Pilbeam, C.J., P.D. Hebbleth Waite, H.E. Rickettsall varieties 100-seed weight, nitrogen % and protein %were decreased gradually by increasing raw spacing from20 up to 60 cm.Data in Table 4 demonstrated that seed and podsyield per plant of all varieties were significantly decreasedas plant density increased. However, seed yield (kg/fed)was increased as plant density was increased for allvarieties due to the increase in number of plants per unitarea. The highest seed yield (580.58 kg) was recordedwith Nubaria-1 x high plant density (42 plant /m ) and2the lowest (296.74 kg) was obtained by low plant density(16 plants / m ). On the other hand, the greatest biological2yield was obtained with Cairo-25 variety when it seededat narrow raw spacing (20 cm), whereas, the highestprotein yield (130.98 kg) was obtained by Nubaria-1 andthe same narrow raw spacing. The increase in proteinyield mainly attributed to the increase in seed yield(kg/fed) and also the protein % under the same condition.These results were similar of findings reported byStutzel et al. [4] and Silim and Saxana