1. 20/7/2010 One high quality and universally available source of all the major macronutrients (nitrogen, phosphorus and potassium) is human urine. Using human urine as fertilizer is not unprecedented, but for various reasons in most countries it is not commonly considered as an option, especially for growing...
  2. 20/10/2010 Input from the ECHO network concerning the use of urine as a fertilizer.