Wasaya, Allah, Muhammad Tahir, Tauqeer Ahmad Yasir, Muhammad Akram, Omer Farooq, and Naeem Sarwar. “Soil Physical Properties, Nitrogen Uptake and Grain Quality of Maize (Zea Mays L.) As Affected by Tillage Systems and Nitrogen Application”. Italian Journal of Agronomy 13, no. 4 (October 30, 2018): 324-331. Accessed March 27, 2019. https://agronomy.it/index.php/agro/article/view/1197.