Garfí, MariannaGelman, PauComas, JordiCarrasco Chilón, William LeoncioFerrer, Ivet2021-10-012021-10-012011-09-07Garfí, 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. doi: 10.1016/j.wasman.2011.08.007https://hdl.handle.net/20.500.12955/1472This 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.Abstract. 1. Introduction. 2. Context. 3. Materials and methods. 4. Results and discusión. 5. Conclusions. Referencesapplication/pdfenginfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/4.0/Anaerobic digestionBiogasCompostSelf-sufficient farmingSubsistence agriculturaSolid wasteinfo:eu-repo/semantics/articlehttps://purl.org/pe-repo/ocde/ford#4.01.01Waste Managementhttps://doi.org/10.1016/j.wasman.2011.08.007