Al-Shaheen MR, Asmail MH, Al-Shaheen MR. Effect of iron nanoparticles and dry yeast extract on the yield and the productivity of corn (Zea maize L.). Iraqi Journal of Science. Published online April 18, 2019:46-51. Accessed June 29, 2026. https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/646