Organic Fertilizer Substitution for Chemical Fertilizer Improves Yield, Medicinal Active Compounds and Amino-Acid Profiles of Dendrobium officinale with Multi-Index Comprehensive Evaluation

In greenhouse-grown Dendrobium officinale, 40% organic fertilizer substitution (T40) produced the top multi-index comprehensive evaluation value, ranking above sole chemical fertilizer (CF).

• Why it matters: Wild D. officinale resources are threatened, and growers need fertilization regimes that balance yield with medicinal quality during artificial cultivation.
• What they did: A bed-cultivation greenhouse experiment compared CK, CF, T20, T40, T60, T80, and OM, measuring growth traits, yield, medicinal active compounds, and 17 amino acids, then ranking treatments using a membership function comprehensive evaluation.
• The result: Fertilization increased growth, yield, and medicinal compounds versus CK, while amino-acid totals and medicinal/umami/bitter amino acids rose significantly under T40 and T60 but declined under excessive organic substitution; the overall ranking was T40 > T60 > CF > T20 > T80 > OM > CK.

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