The burden on and effects on the environment and people due to the use of biocides in agriculture and horticulture is a well-known fact. For example, in wine-growing in France, about 90% of all biocides are used on 10% of the total agricultural area. In addition, even organic (wine) farmers are still dependent on synthetic fungicides and copper derivatives to combat mildew and after many decades of use Cu-levels in soil and water reserves reach levels that pose major ecotoxicological concerns. Nanoconsult is now a co-founder and shareholder of AlgiMatter which focuses on the development and marketing of sustainable solutions for combating plant diseases caused by fungi within the context of global warming. The work is based on earlier field studies in France and the Netherlands during which the efficacy of microalgae was demonstrated.