Assistant Professor Dr. Khaleel Jameel Al-Issawi, lecturer in the Department of Soil and Water Resources Sciences, participated in the Fifth Scientific Conference for Agriculture and Environmental Sciences, which was held by the College of Agriculture / Al-Qasim Green University for the period 23-24/11/2022, with the research tagged “The role of iron nanoparticles and humic acid in iron concentration, growth and yield of broccoli (Brassica oleracea var italic)”, with the participation of the assistant teacher Laqaa Ismail Mahdi, lecturer in the department of Soil sciences and water resources in our college; Dr. Muneer Naji Ahmed from the Upper Euphrates Basin Center .... The research aimed to study the effect of spraying the shoots of plants with nano-iron and conventional ones, with or without humic acid, on some indicators of the growth and yield of broccoli..