Life Sciences Commons^™

Light-Saturated Co2 Assimilation Rates Of Corn And Velvetleaf In Response To Leaf Nitrogen And Development Stage, John L. Lindquist

Department of Agronomy and Horticulture: Faculty Publications

Single-leaf CO₂ assimilation rate under saturating light (C_A) varies as a function of leaf nitrogen content per unit leaf area (N_L). Measured C_A for many crop species also declines with developmental stage. Because these relationships may have strong implications for crop–weed competition, a field experiment was conducted to quantify corn and velvetleaf C_A as influenced by leaf N_L and stage of development. Crop and weed C_A were measured on the most recent fully expanded leaves of plants grown in four nitrogen (N) application treatments. Both corn and velvetleaf C_A increased …