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Title: | Agricultural reuse of the digestate from low-cost tubular digesters in rural Andean communities | Authors: | Garfí, Marianna Gelman, Pau Comas, Jordi Carrasco Chilón, William Leoncio Ferrer, Ivet |
Keywords: | Anaerobic digestion;Biogas;Compost;Self-sufficient farming;Subsistence agricultura;Solid waste | Issue Date: | Dec-2011 | Publisher: | Elsevier | Source: | Garfí, M.; Gelman, P.; Comas, J.; Carrasco, W. & Ferrer, I. (2011). Agricultural reuse of the digestate from low-cost tubular digesters in rural Andean communities. Waste Management Volume 31, Issue 12, Pages 2584-2589. https://doi.org/10.1016/j.wasman.2011.08.007 | Journal: | Waste Management | Abstract: | This research aimed at assessing the properties of guinea pig manure digestate from low-cost tubular digesters for crops fertilization in rural Andean communities. To this end, field trials were carried out to evaluate the effect of the digestate on two common Andean crops: potato (Solanum tuberosum) and forage (Lolium multiflorum and Trifolium pratense L.). The potato yield (20–25 t ha−1) increased by 27.5% with digestate, by 15.1% with pre-compost and by 10.3% with the mixture, compared to the control. The forage yield (20–21 t ha−1) increased by 1.4% with digestate – 50% dose, and by 8.8% with digestate – 100% dose and digestate – 150% dose, compared to the control. The results suggest that the digestate is an appropriate substitute of manure pre-compost for potato fertilization. The results with forage indicate that it can be applied in a range of doses, according to the amount produced by the digester. Currently, manure is either used for cooking or as fertilizer. With low-cost tubular digesters implementation, it could be used to feed the digester, using the digestate for crops fertilization and biogas for cooking; improving household living conditions and protecting the environment. Since soil properties in rural Andean communities differ from experimental layouts, the effect of fertilizers should be re-evaluated in-situ in future research studies. |
Description: | 6 páginas |
URI: | https://hdl.handle.net/20.500.12955/1472 | ISSN: | 0956-053X | DOI: | https://doi.org/10.1016/j.wasman.2011.08.007 | Rights: | info:eu-repo/semantics/openAccess |
Appears in Collections: | Artículos científicos |
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Agricultural reuse of the digestate from low-cost tubular digesters in rural Andean communities.pdf | Artículo | 2,35 MB | Adobe PDF | View/Open |
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