This practical guideline on the use of urine in agricultural productions gives some background information on basic plant requirements and how they can be met with urine as a liquid fertiliser.
RICHERT, A. GENSCH, R. JOENSSON, H. STENSTROEM, T.A. DAGERSKOG, L. (2010): Practical Guidance on the Use of Urine in Crop Production. (= EcoSanRes Publication Series, Report No. 2010-1 ). Stockholm: Stockholm Environment Institute (SEI) URL [Accessed: 26.05.2019]