Fig. 1. Top and root yields, and top/root ratio, for woody species. Treatments separated by Duncan's multiple range test at P = 0.05. Treatment abbreviations: Hoagland's half-strength #2 solution (HH); Plant Products (PP); anaerobic digestion wastewater (ADW); spent mushroom compost extract (SMC); MSW compost extract (GMC); amended to HH levels (-A).