Urine contains four important nutrients for plant growth: nitrogen (N), phosphorus (P), potassium (K) and sulphur (S). Urine application can not only recover these nutrients, but also reduce the use of complete fertilisers and freshwater, as well as minimise the contamination of surface and ground waters by wastewater and excreta.
However, if urine is not managed properly, the risk of pathogen transmission, soil salinisation and pharmaceutical contamination, as well as strong and offensive odour can cause significant health problems and discomfort. Other challenges that have to be addressed are separation techniques, storage time, amount of urine to be applied, odour prevention and transport. Find out more in the literature review.
This tool calculates the collectible urine volume per household and gives the user the potential fertilisation area for the amount of calculated urine. For more information on urine utilisation and its proper management, have a look at the further materials provided in the Toolbox.
Please keep in mind that the application rate of urine depends not only on its nutrient content, but also on the main goal of urine utilisation: N-Fertilisation or P-Fertilisation.
Urine Application Calculator by Andrea Munoz Ardila and Ruth Schaldach is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.