Aarthi Janakiraman, Research Manager, Chemicals and Advanced Materials at TechVision, Frost & Sullivan, analyses bio-based fertilisers and ponders if they are a potential move towards the circular economy ...Call for action. ... 8 ... Juan Tur-Cardona, Ole Bonnichsen, Stijn Speelman, Ann Verspecht, Louise Carpentier, Lies Debruyne, Fleur Marchand, Brian H ... .