تاثیر کاربرد کود بیولوژیک و تغذیه برگی عناصر کم‏مصرف بر برخی از خصوصیات فیزیولوژیک و کیفیت علوفه در گیاه سورگوم (رقم پگاه)

the effect of bio-fertilizers and foliar application of iron and zinc on some of characteristics of physiological and qualitative in forage sorghum, an experiment was conducted as split factorial on the basis of randomized complete block design with 4 replications in Research Farm of the College of Agriculture, University of Tehran (Karaj) in 2011. The effect of mycorrhiza (main factor) in 2 levels and both Fe and Zn foliar application (sub-factors) in 3 levels were evaluated. In this study, life area index and forage qualitative traits including dry matter digestibility and crude protein were measured. Results indicated that the use of bio-fertilizer and foliar application iron and zinc significantly increased dry matter digestibility of forage. Also, the maximum crude protein was related to integrated treatment of Mycorrhizal and foliar application of the Fe and Zn in concentrations of 8 and 3 per thousand, respectively. The maximum of leaf area index was related to treatment of Mycorrhizal and foliar application in concentrations of 4 and 6 per thousand for the Fe and Zn, respectively.