Figure 5. Relative Competition Intensity (RCI) for plants representing primary and secondary crops (RCI1 and RCI2, respectively) in each mixture in 2001 (circ, n = 3) and 2002 (bullet, n = 4). Arrows show change between years. Bars denote standard error of each mean. The dotted line is the threshold at which the sum of RCIs for both crops is zero.

Table 2. Fresh weight of aboveground biomass collected throughout season. Calculated means of log transformed data are followed by back-transformed figures in parentheses. Means for a single crop followed by the same letter within a column are not significantly different, Tukey's test (P < 0.05).