Fig. 1
Dry matter yield. Yield in t DM ha−1 of different energy crops and cropping systems. Maize as succeeding second crop (stacked bars). Different letters indicate significant differences between the variants from Tukey’s HSD Test. Error bars = standard errors (SE) of cumulative yield. NA = not available, PF Mix = perenn. Flow. mix, RG = ryegrass, CP = cup plant, AF mix = annual flow. Mix, A = amaranth, M = maize, AM = amar./maize, FB Wi = wi faba bean, Tri = triticale, FB Wi Tri = wi faba bean/triticale, RV = rye/vetch