Waseem, Muhammad, Asghar Ali, Muahammad Ather Nadeem, Muhammad Tahir, Muhammad Shahid Ibni Zamir, Asif Iqbal, and Naveed Iqbal. “An Integrated Nutrient Management Approach for Improving Maize (Zea Mays L.) Yield: Nutrient Management for Maize Crop”. Biological Sciences - PJSIR 54, no. 2 (August 29, 2011): 64–70. Accessed May 3, 2024. https://v2.pjsir.org/index.php/biological-sciences/article/view/377.