Khalili, Azizullah, Shiva Dhar, Nasir Ahmad Rasrat, Mukhtar Ahmad Faiz, Anchal Dass, and Eldho Varghese. 2016. “Effect of Nitrogen Management on Yield and Economics of Maize (Zea Mays L.) in Kandahar Region of Afghanistan”. Annals of Agricultural Research 37 (3). https://epubs.icar.org.in/index.php/AAR/article/view/62767.