Figure 2From: Life history and assessment of grapevine phylloxera leaf galling incidence on Vitis species in Uruguay Grapevine phylloxera leaf-gall infestation levels in Viognier. (A C E) Juanicó, (B D F) Progreso, (A B) 2004-2005, (C D) 2005-2006, (E F) 2006-2007. Degree days are shown in the secondary X axis. Numbers of galls containing live insects (grey background), eggs (white bars), and nymphs (red bars) are indicated.Back to article page