Abstract—Arsenic causes physiological disorders in plants. In order to study effects of arsenic and nitrogen on safflower parameters, a plot experiment as completely randomized factorial design with three replicates was conducted in a greenhouse at university of Zabol, Iran. The nitrogen treatment was; N₁=75, N₂=150 and N₃=225 kg N ha^-1, and arsenic levels was A₁=0, A₂=30, A₃=60 and A₄=90 mg/kg.soil. Results showed grain yield was significantly affected by interaction nitrogen×arsenic and the highest grain yield was obtained at the N₂A₃ treatment. Data showed that application of nitrogen and arsenic had significantly effects on yield components (biological yield and number of seed per plant). By increasing arsenic concentration from A₁ to A₄, yield components decreased but by application of nitrogen, especial until N₂ level, these components increased. Arsenic and nitrogen application, significantly affected on carbohydrate and chlorophyll content in leaves. Under arsenic treatment, chlorophyll and carbohydrate content increased.

Index Terms—arsenic, nitrogen, agronomy traits, safflower

Cite: Mostafa Heidari and Sepideh Mohamadi, "Effect of Arsenic and Nitrogen Application on Grain Yield and Some Physiological Parameters of Safflower (Carthamus Tinctorius L.)," Journal of Advanced Agricultural Technologies, Vol. 1, No. 1, pp. 48-51, June 2014. Doi: 10.12720/joaat.1.1.48-51