Supplying organic farming with plant nutrients – resource and environmental aspects in a life cycle perspective

The objective of this project is to assess and compare the resource and environmental aspects of using plant nutrients (nitrogen, phosphorus and potassium) from different sources in organic farming. The sources of plant nutrients to be assessed in a life cycle perspective include both those presently allowed and those not allowed, namely: green manure, unprocessed manure from a conventional farm, dried chicken manure, meat/bone/blood meal, raw phosphate/apatite, sanitized human urine, sanitized toilet waste, anaerobically digested household and slaughterhouse waste and, as comparison, mineral fertilizers.

Project leader: Johanna Spångberg

Financing: Formas