Figure 2
From: Forbs enhance productivity of unfertilised grass-clover leys and support low-carbon bioenergy
Annual biomass yield in the 10 seed mixtures in 2014 (a,b) and 2015 (c,d) without (a,c) and with (b,d) fertilisation. Data are means ± SE (n = 3) for each component species. Means for seed mixtures with different lowercase letters are significantly different (P < 0.05) using Tukey’s post hoc test.
