Preparation of fermented fertilizer using pruned twigs and dried poultry manure as raw materials
2018
Takeshita, M. (Fukuoka Agriculture and Forestry Research Center, Chikushino, Fukuoka (Japan)) | Fukuhara, E. | Koyama, F. | Onoue, T. | Araki, M.
A fermented fertilizer was prepared late in August using pruned twigs collected from trees lining a street. Three types of materials, namely, crushed raw, four-month-old, and ten-month-old composted pruned twigs, were individually mixed with dried poultry manure in the experiment. The fermentation period of approximately 5 weeks was suggested to be enough based on no changes in the temperature and C/N ratio under 20℃ by the fifth week. The growth rate of the potted Komatsuna plants in the experimental plot using the five-week-old fermented fertilizer indicated no differences compared to the growth in the other plots using chemical fertilizer or poultry manure. The pruned twig appeared to be available as the material of poultry manure-mixed fermented fertilizer independent of the manure period because the maturity of the pruned twig did not affect the growth of Komatsuna. Improvement effects on the humus content in the soil were observed in the experimental plots using the fermented fertilizer compared to chemical fertilizer. However, it was expected that its continuous use causes an unbalanced state of cation in the soil. Thus, we suggest that the fermented fertilizer prepared in the present study can be used as a soil improvement material and is advantageous for use along with a chemical fertilizer based on the limited effects of fertilizer on the total nitrogen supply.
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