Fig. 4From: The energy potential of soft rush (Juncus effusus L.) in different conversion routesMean specific methane yield (LN kg VS−1) of different fermented soft rush biomass compared with maize as a reference co-substrate. Different letters indicate significant differences of the means (Tukey’s HSD, p < 0.05). Error bars indicate standard deviations of the means. Dots mark the amount of specific biogas yield potential according to Weißbach [41]Back to article page