Journal of Zhejiang Agricultural Sciences ›› 2025, Vol. 66 ›› Issue (12): 3086-3092.DOI: 10.16178/j.issn.0528-9017.20240909

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Effect of the addition amount of ginger powder on the aerobic composting of gibberellin fermentation residues

ZHAO Tinglei1,2(), QIU Yongwei3,4, ZHOU Ying2, YAO Yanlai1, HONG Chunlai1, ZHU Weijing1, HONG Leidong1, ZHANG Tao1, GUO Rui1, ZHU Fengxiang1,*()   

  1. 1. Institute of Environment, Resources and Soil Fertilizer, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, Zhejiang
    2. College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, Zhejiang
    3. Changxing Xingde Biotechnology Co., Ltd., Huzhou 313103, Zhejiang
    4. Zhejiang Agronomist College, Hangzhou 310021, Zhejiang
  • Received:2024-11-29 Online:2025-12-11 Published:2025-12-17

Abstract:

Gibberellin fermentation residues (GFRs) are solid waste generated during the production of gibberellin. Effectively utilizing this waste has significant environmental benefits. In this paper, the GFRs were used as the raw material, and 10%, 20%, 30% and 40% of ginger powder were added as auxiliary materials respectively for aerobic composting to explore the optimal addition amount of ginger powder. The results indicated that when 30% ginger powder was added as an auxiliary material, the aerobic composting effect of the fermented residue was improved, with a prolonged high-temperature period that met the sanitization standard. Meanwhile, at the end of the composting process, the seed germination index under this treatment reached the highest value, exceeding 60%. Additionally, the total potassium content under this treatment increased by 2.97 percentage points, while the water-soluble carbon content during the high-temperature period decreased by 1.48 percentage points, both of which contributed to promoting the maturation of the compost. Therefore, adding 30% ginger powder as an auxiliary material was more suitable for aerobic composting of GFRs. Regarding the changes in gibberellin content and germination index, it is recommended to extend the composting period to ensure the complete degradation of gibberellin and compliance with the standard for germination index of NY 525—2021 Organic fertilizer.

Key words: gibberellin, fermentation residue, ginger powder, aerobic composting

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