Published online by Cambridge University Press: 12 June 2017
Photosynthetic 14CP2 fixation was significantly inhibited in the excised leaves of cotton (Gossypium hirsutum L., var. DPL smoothleaf) (moderately tolerant) and soybean (Glycine max Merr., var. Lee) (sensitive) by 2,4-bis(isopropylamino)-6-methylmercapto-s-triazine (prometryne) and the degree of inhibition increased with increasing herbicide concentration. Prometryne produced no significant effect on 14CO2 fixation during the dark period in either species except for some changes in the concentrations of aspartic and glyceric acids in soybean.