Human urine is rich in nitrogen and phosphorus as well as potassium. According to the reference report( https://goveganic.net/Fertilizing-with-human-urine) 90 million gallons of urine contains 7 million pounds of nitrogen. This means that 340 litres of urine contents 3.17 kg is of nitrogen, which is equivalent to 6.799 kgs of urea.
A person urinates about 550 litres in a year, at an average of 1.5 litres per day. The quantity of urine urinated by a person in a year contains sufficient nutrients to grow 250 kg of cereal required for a person per year.
At Vigyan Ashram we have 70 + headcount during daytime and 50 + over night . If we can collect 75 liters of human urine, which is 50% of the total generated in VA campus. Then 75 litres of urine is equivalent to 1.5 kg of urea everyday. This amounts to 547. 5 kg of Urea in an year which is almost requirement of 1 acre of agricultural land.