Mohammadi,V , , Kambouzia,J , , Zand,E , , Soufizadeh,S , and Rahimi Moghaddam,S . "The effect of different levels of N fertilizer on yield and yield components of maize (Zea mays L.) under competition with different densities redroot pigweed (Amaranthus retroflexus L.) and millet (Panicum miliaceum L.)", Iranian Journal of Field Crop Science, 47, 3, 2016, 437-449. doi: 10.22059/ijfcs.2016.60125