Characterization of microbial populations associated with different organic fertilizers

IF 1.2 Q4 ENVIRONMENTAL SCIENCES
N. Escobar, N. Arenas, S. M. Márquez
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引用次数: 0

Abstract

Purpose Bacterial and fungal communities represent key bioindicators of soil quality and are essential for the maintenance of nutrient availability. Our purpose was to characterize the bacterial and fungal biodiversity associated with different compost mixtures, comparing microbiological indicators regarding the soil quality. Methods Compost samples and mixtures were prepared (15:1 final ratio) with chemical fertilizer, animal manures (bovine, swine, and poultry) and green waste (such as tomato waste and leaves). Bacterial and fungal isolation and identification were performed through standard phenotypic methods. Statistical methods to assess differences between treatments included Shannon diversity, Chi-square tests, Bray-Curtis clustering, and Canonical Correspondence Analysis. Results Streptomyces species, Gram-positive bacteria, were commonly found in differing abundances in all samples. Gram-positive species were predominant in soils amended with vegetable green waste while Gram-negative bacteria were more abundant in samples with chemical fertilizer. Fungal abundance increased in poultry manure and chemical fertilizers. Conclusion Our findings suggested that organic matter recycling and composting resulted in the shifting of biodiversity in bacterial and fungal populations which might be associated with the availability of certain nutrient sources provided by the composting materials.
与不同有机肥有关的微生物种群特征
目的细菌和真菌群落是土壤质量的关键生物指标,对维持养分有效性至关重要。我们的目的是表征与不同堆肥混合物相关的细菌和真菌生物多样性,比较与土壤质量有关的微生物指标。方法以化学肥料、动物粪便(牛、猪、禽)和绿色废弃物(番茄废弃物、树叶)为原料,按15:1的终比配制堆肥样品和混合物。通过标准表型方法进行细菌和真菌的分离和鉴定。评估处理间差异的统计方法包括Shannon多样性、卡方检验、Bray-Curtis聚类和典型对应分析。结果革兰氏阳性菌中链霉菌种类较多,丰度不同。革兰氏阳性菌在菜绿废弃物处理的土壤中占优势,而革兰氏阴性菌在化肥处理的土壤中较多。禽粪和化肥中真菌丰度增加。结论有机质循环利用和堆肥处理导致了土壤细菌和真菌种群多样性的变化,这可能与堆肥材料提供的某些营养源的有效性有关。
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来源期刊
CiteScore
2.10
自引率
26.70%
发文量
0
审稿时长
13 weeks
期刊介绍: The International Journal of Recycling of Organic Waste in Agriculture is an open access journal that publishes high-quality solicited and unsolicited articles, in all areas of Recycling of organic waste including: -Solid waste reuse in agriculture -Waste water reuse in agriculture -Utilization of organic wastes: composting -Ways to reduce, reuse and recycle organic waste -Social and economic impact of reduction, reuse and recycling of organic waste in agriculture -Methods to raise the public awareness of recycling and reuse of organic waste in agriculture -Organic waste utilization in animal and poultry nutrition -Urban food waste composting
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