Reply To: Human urine Agroforestry Research Trust › Forest Garden Forum › Nitrogen Fixing Trees and Shrubs › Human urine › Reply To: Human urine June 9, 2020 at 8:04 am #87274 Martin CrawfordKeymaster One pee gives approx total of 5g of Nitrogen. So amount per sq m depends on how far you spread it! Female urine not significantly different, acidity will vary more to do with diet I think.
