By Sahana Singh
India has known the efficacy of urine as fertilizer for centuries. Why then, did we not take the lead in developing urine-based methods of irrigation?In the past fortnight there has been a huge controversy around Union Minister Nitin Gadkari’s speech about the usage of urine as fertilizer for plants. Mr Gadkari said that he collected urine in a 50 litre can and used it to irrigate his garden. The plants that were watered with urine grew better and bigger, he informed.