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Table 4 Kinetic parameters of biogas production, methane (CH4) percentage and methane yield

From: Towards an ideotype for food-fuel dual-purpose wheat in Argentina with focus on biogas production

Season Group Bmax (Nml/g VS) k (day −1) CH4 (%) Methane yield (m3/ha)
2014 CI-HY 424.5 ± 5.8b 0.111 ± 0.004a 55.8 ± 0.5a 1800 ± 29c
CI-LY 418.2 ± 5.5ab 0.125 ± 0.005b 55.3 ± 0.5a 1238 ± 66a
CR-HY 422.8 ± 6.8ab 0.126 ± 0.002b 55.1 ± 0.4a 2164 ± 137d
CR-LY 405.6 ± 9.5a 0.118 ± 0.004ab 56.1 ± 0.5a 1503 ± 54b
FR-HY 426.7 ± 4.8b 0.127 ± 0.003b 55.5 ± 0.5a 1944 ± 65cd
FR-LY 426.4 ± 4.8b 0.124 ± 0.005b 55.6 ± 0.5a 1562 ± 73b
2017 CI-HY 432.5 ± 6.7ab 0.128 ± 0.003a 55.6 ± 0.2a nd
CI-LY 417.0 ± 4.4a 0.126 ± 0.003a 56.0 ± 0.3a nd
CR-HY 442,4 ± 6.4b 0.129 ± 0.006a 55.3 ± 0.2a nd
CR-LY 439.4 ± 8.3b 0.122 ± 0.008a 55.9 ± 0.2a nd
FR-HY 434.3 ± 6.6ab 0.126 ± 0.006a 55.8 ± 0.2a nd
FR-LY 432.1 ± 7.1ab 0.127 ± 0.005a 55.9 ± 0.3a nd
  1. Best fitting values for Bmax and k, and methane content of biogas for the six wheat genotype groups, for both 2014 and 2017 seasons. Methane content was determined after cumulative biogas reached a plateau. Methane yield was determined during season 2014. Data represent mean ± SE (n = 12) of all genotypes grouped according to Table 1. Different letters indicate significant differences (p ≤ 0.05)
  2. nd not determined