Abo Ayed, Menna Allah Mohamed Rashad. Effect of nitrogen fertilization and humic on growth, yield and its components of maize (Zea Mays, L.) [electronic resource] / Menna Allah Mohamed Rashad Abo Ayed - 2018. Thesis (M.S.) -- Tanta University , 2018. Includes bibliographical references. Systems requirements : Adobe Reader Summary in Arabic Subjects--Topical Terms: Corn--Growth.Corn--YieldsCorn--Fertilization.Humic acid.Nitrogen fertilizers.