CHEMICAL AND MICROBIOLOGICAL PROPERTIES OF GOAT MANURE DURING COMPOSTING AND VERMICOMPOSTING.
Goat manure is produced in large quantities and for either their storage or dispersion in soils, or both, this residue can cause atmospheric and water pollution. Therefore, it is necessary to stabilize it for agronomic usage. Vermicompost presents chemical and microbiological characteristics that make it biologically more stable and therefore suitable for its use as an organic fertilizer. The objective in this study was to compare the changes in the chemical and microbiological properties of goat manure during composting and vermicomposting, for biological stabilization. For it, manure was collected at pens from the goat module of the UAEM University Center, Temascaltepec Farm, Mexico. The manure was then composted for 45 d in 300 kg conical piles. Vermicomposting with Eisenia fetida lasted 60 d. At the end of the processes, samples were taken for chemical and microbiological analysis. The substrates were monitored for their temperature and 80 % humidity was maintained. The experimental design was completely randomized, with two treatments (T1: goat manure compost, T2: vermicompost goat manure) with six repetitions each. The data was analyzed via one-way ANOVA, and the microbiological variables were analyzed with descriptive statistics. The variables pH, organic matter (OM), organic carbon (OC) and total nitrogen (TN) between the processes showed differences (p?0.001, p?0.0001, p?0.0001, p?0.007, respectively). The electric conductivity (EC) and the C : N relation between the evaluated processes were different (p?0.0001, p?0.031, respectively). The Ca, Mg, P and Na content decreased in the vermicompost (p?0.0001). A higher content of Pseudomonas, fungi (Aspergillus) and actinomycetes was detected in the vermicompost. Thus, the biological stabilization of goat manure by composting is different from vermicomposting in their chemical variables and microbial content.
| Main Authors: | , , , , , |
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| Format: | Digital revista |
| Language: | spa |
| Published: |
Colegio de Postgraduados
2019
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| Online Access: | https://www.agrociencia-colpos.org/index.php/agrociencia/article/view/1764 |
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