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Effect of nitrogen rates and weed interference on yield and yield components of corn (zea mays)
Safar Nasrollahzadeh, Aysan Hajebrahimi, Jalil Shafagh-Kolvanagh, Sajjad Shaker-Kouhi
Int. J. Agron. & Agric. Res. 7(1), 1-6, July 2015.