Table 3.

Change in below‐ground (BG) biomass and Miscanthus‐derived soil carbon (as a percentage of total soil organic carbon [SOC]) at 0–15 cm depth after 6 (T₆) and 12 (T₁₂) years of land conversion from grassland to Miscanthus. Biomass and C_mis differences are taken from mean values across all three sampling positions (C_c, C_e, C_i). Above‐ground ripening loss is the difference between autumn peak and spring harvest yields. The standard error is shown in brackets

Hybrid	BG biomass (mg/cm3): Difference T6 to T12	Cmis (% of SOC): Difference T6 to T12	Above‐ground ripening loss (%)
Mxg	+4 (±10)	+10 (±2)	26 (±9)
Hyb 1	+6 (±6)	+10 (±3)	31 (±4)
Hyb 2	−4 (±9)	+5 (±1)	19 (±1)
Hyb 3	+4 (±12)	+8 (±3)	25 (±8)
Hyb 4	−14 (±12)	+7 (±3)	36 (±4)