Effects of turning frequency on the nutrients of Camellia oleifera shell co-compost with goat dung and evaluation of co-compost maturity

Autoři: Jinping Zhang aff001;  Yue Ying aff001;  Xiaohua Yao aff001
Působiště autorů: Research Institue of subtropical Forestry, Chinese Academy of Forestry, Hangzhou, Zhejiang, China aff001
Vyšlo v časopise: PLoS ONE 14(9)
Kategorie: Research Article
doi: 10.1371/journal.pone.0222841


Composting is an important treatment method for Camellia oleifera shell and goat dung, which is crucial for the development of tea oil industry and goat breeding industry. Ventilation is the important regulatory factor in composting process, and high degree of maturity is the principal requirement for safe application of composting product. In the study, four treatments were designed as every 5 days turning (A1), every 7 days turning (A2), every 10 days turning(A3), and every 15 days turning (A4) for evaluating the maturity of Camellia oleifera shell co-composted with goat dung and optimizing turning frequency. During composting, TN, NO3‐‑N, GI, Solvita maturity index was increased along with composting process, while NH4+‑N, C/N shown an opposite trend. For all treatments, the longest thermophilic period (over 50°C), highest total nutrient and lowest C/N ratio were observed in A2. A turning frequency of every 7 days for co-compost of Camellia oleifera shell and goat dung could enhance the composting product quality. According to the analysis of spearman correlation, TN, C/N ratio, and GI could be used to comprehensively evaluate the compost maturity.

Klíčová slova:

Ammonia – Fertilizers – Nutrients – Plant growth and development – principal component analysis – Raw materials – Soil mineralization – Goats


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