Figure 4
From: Effects of oxygen fertilization on damage reduction in flooded snap bean (Phaseolus vulgaris L.)

The dynamic changes for NO3−, NH4+, and DO concentrations in containers with three conditions. I = aeration condition, II = flooding conditions (starting at 3 mg L−1 DO level, without any oxygen supplement) for 20 h, and III = flooding conditions with 529 μM H2O2 at 0 h. Ammonium = NH4+ concentration, Nitrate = NO3− concentration, Oxygen = DO concentration. The concentration readings were taken every 10 min.