TY  - JOUR
AU  - Nasirinejad, M.
AU  - Bagheri, A.
AU  - Jafari, A.
TI  - Evaluation the effect of C3 and C4 weeds and different levels of nitrogen on growth and biomass production of sunflower (Heliantheus annus L.)
JO  - Journal of Plant Ecophysiology
VL  - 4
IS  - 11
SP  - 14
EP  - 24
PY  - 2012
DO  - 
ER  -