Fig. 1. Evolution of the mean and its standard error, the coefficient of variation (CV), skewness and kurtosis of biomass per plant in soybean, sunflower and maize grown at two plant population densities: standard (D = 30, 6 and 8·5 plants m^–2, respectively; open symbols) and high (2D; closed symbols). Horizontal bars in the upper panel indicate the critical period for seed set. In soybean, typical leaf shedding accounted for the decrease in biomass at maturity.