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

doi:10.16178/j.issn.0528-9017.20240909

Abstract

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

CLC Number:

S141.4

ZHAO Tinglei, QIU Yongwei, ZHOU Ying, YAO Yanlai, HONG Chunlai, ZHU Weijing, HONG Leidong, ZHANG Tao, GUO Rui, ZHU Fengxiang. Effect of the addition amount of ginger powder on the aerobic composting of gibberellin fermentation residues[J]. Journal of Zhejiang Agricultural Sciences, 2025, 66(12): 3086-3092.

Figures/Tables 5

Table 1 Physical and chemical properties of compost materials

物料	含水率/ %	pH值	电导率/ (mS·cm^-1)	有机碳含量/%	粗蛋白含量/%
发酵滤渣	70.41	4.46	0.77	44.4	34.99
姜末	24.99	6.77	0.12	—	—

Fig.1 Basic physical and chemical property changes during the composting process

Fig.2 Changes in carbon and nitrogen-related parameters during the composting process

Fig.3 The changes in carbon, phosphorus and potassium contents and their availability during the composting process

Fig.4 The maturity and safety of the compost

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