Figure 2

Effects of different concentrations of 24 h and 48 h leachates on reduction of 2,3,5-triphenyl tetrazolium chloride (TTC) by water hyacinth leaf discs. Data are presented as mean ± standard errors (n = 4). Asterisk (*) indicates significant difference from the control (0% leachate) as determined by Student’s T-test at p < 0.05.