Basam Mazhar Kazem, Haifa Jassim Hussein, Abdullah Abbas Hussein. Effect of Adding NPK-Chitosan Fertilizer and Organic Matter on  phosphorus and potassium content of Corn (Zea mays L.). UTJagr [Internet]. 2024 Jun. 1 [cited 2025 Jul. 25];13(1):146-52. Available from: https://jam.utq.edu.iq/index.php/main/article/view/310