<i>F</i> values and significance levels for the significant main effects from ANOVA of the total biomass (W), relative shoot weight (% S) and relative root weight (% R), for which there were no sediment effects, and plant height (H), separately for each harvest time interval.

Superscripted numbers (1 and 2) indicate the error terms used in model, as follows 1 Plot (Treatment) with 15 d.f. 2 Plot (Treatment) × Sediment with 15 d.f. * p ≤ 0.05. ** p < 0.01. *** p ≤ 0.001. F values and significance levels for the significant main effects from ANOVA of the total biomass (W), relative shoot weight (% S) and relative root weight (% R), for which there were no sediment effects, and plant height (H), separately for each harvest time interval.