Babar, Muhammad Ayub, Khan, Ajmal, Azam, Sher, ., Ikramullah, Arif, Muhammad, AND Hussain, Sarfaraz. " 71. Weeds in wheat crop: weed whole plants nutrient concentration and uptake under fertilizer application and irrigation frequencies" Pure and Applied Biology (PAB) [Online], Volume 8 Number 2 (2 June 2019)