Maxicrop is a company that sells seaweed-based liquid or powdered organic fertiliser, promoted as a "bio-stimulant".
Doug Edmeades, a New Zealand scientist and agricultural consultant, was sued by Maxicrop when he said that their product was useless.
The resulting case Bell-Booth Group Ltd v Attorney-General reviewed evidence provided by the Ministry of Agriculture established that Maxicrop did not materially improve the growth of plants and supported Dr. Edmeades' claims of inefficacy.
References
Maxicrop Wikipedia(Text) CC BY-SA