Agricultural reuse of the digestate from low-cost tubular digesters in rural andean communities
10.1016/j.wasman.2011.08.007
Inclou dades d'ús des de 2022
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hdl:2117/26346
Tipus de documentArticle
Data publicació2011-12
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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.
CitacióMarianna Garfi' [et al.]. Agricultural reuse of the digestate from low-cost tubular digesters in rural andean communities. "Waste management", Desembre 2011, vol. 31, núm. 12, p. 2584-2589.
ISSN0956-053X
Versió de l'editorhttp://www.sciencedirect.com/science/article/pii/S0956053X11003679
Col·leccions
- GEMMA - Grup d'Enginyeria i Microbiologia del Medi Ambient - Articles de revista [202]
- GREA - Grup de Recerca d'Enginyeria Agroambiental - Articles de revista [100]
- Departament d'Enginyeria Hidràulica, Marítima i Ambiental (fins octubre 2015) - Articles de revista [96]
- Departament d'Enginyeria Agroalimentària i Biotecnologia - Articles de revista [1.057]
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Agricultural re ... ral Andean communities.pdf | 2,291Mb | Visualitza/Obre |