Environmental Engineering Division, Department of Hydraulic, Maritime and Environmental Engineering, Universitat Politècnica de Catalunya, c/ Jordi Girona 1-3, Building D1, E-08034 Barcelona, Spain.
Waste Manag. 2011 Dec;31(12):2584-9. doi: 10.1016/j.wasman.2011.08.007. Epub 2011 Sep 7.
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 tha(-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 tha(-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.
本研究旨在评估低成本管状消化器中猪粪消化物的特性，以用于农村安第斯社区的作物施肥。为此，进行了田间试验，以评估消化物对两种常见的安第斯作物（马铃薯（Solanum tuberosum）和饲料（Lolium multiflorum 和 Trifolium pratense L.））的影响。与对照相比，消化物使马铃薯产量（20-25 吨/公顷）增加了 27.5%，预堆肥增加了 15.1%，混合物增加了 10.3%。饲料产量（20-21 吨/公顷）用消化物-50%剂量增加了 1.4%，用消化物-100%剂量和消化物-150%剂量增加了 8.8%，与对照相比。结果表明，消化物是替代预堆肥进行马铃薯施肥的合适替代品。饲料的结果表明，它可以根据消化器的产量在一定剂量范围内使用。目前，粪便要么用于烹饪，要么用作肥料。随着低成本管状消化器的实施，它可以用于喂养消化器，将消化物用于作物施肥和沼气用于烹饪，从而改善家庭生活条件并保护环境。由于农村安第斯社区的土壤特性与实验布局不同，在未来的研究中，应在现场重新评估肥料的效果。
