France, June 20 -- At a collection point in Chatillon, just south of Paris, Bruno Rakedjian unscrews the cap of a five-litre jerry can and inserts a plastic tube which then pumps the yellow liquid contents into a 150-litre container.

"Twenty of us in Chatillon are collecting urine at home," he says, pointing to a blue plastic funnel that makes peeing into the plastic container a straightforward affair.

Like the other members, he drops off his urine once a week when picking up organic vegetables supplied by the local farmer who collects the urine.

This small citizen-led initiative was started four years ago as part of a publicly funded project on using human waste in agriculture, run by research programme OCAPI.

"One person's urine over ...