List of Articles Biologic yield Open Access Article Abstract Page Full-Text 1 - Effect of Time of Seaweed Consumption and Composition of Seaweed and Urea Fertilizer on Nitrogen Use Efficiency and Wheat Yield Mehrnoosh Zakeri Seyed Keyvan Marashi Open Access Article Abstract Page Full-Text 2 - The effect of mycorrhizal and potassium on yield and yield components of Black Cumin (Nigella sativa) under different irrigation regimes khosro Taheri Haghighi barmak jafari abdolreza jafary hamidreza miri Hamid Reza Ebrahimi Open Access Article Abstract Page Full-Text 3 - Comparison between grain yield and yield components of sweet corn hybrids at different sowing dates in Arak environment Hamid Madani Marzieh GHasemi Open Access Article Abstract Page Full-Text 4 - Effect of seed bio-fertilization on tuber yield and yield components of three potato cultivars Bahram Mirshekari