Oct 10, 2023 · The GI of group T reached 98.7% on day 15, reaching the compost maturation standard (GI ≥ 85%). After composting, the GI of group CK was only 42.7, 56.7% lower than that of group T, and it did not reach the compost maturation standard. In a study by Wang et al., it took 35 days for an herb residue compost to reach the maturity threshold, 22