789532.fig.002a
(a)
789532.fig.002b
(b)
789532.fig.002c
(c)
789532.fig.002d
(d)
Figure 2: Mean population abundance of Schizaphis graminum, Metopolophium dirhodum, and Sitobion avenae in wheat crops with a high (HPD) and low plant diversity (LPD). Balcarce, 2007 and 2008.