Liquid plant manure

However, Éric Petiot, author of a popular modern textbook on the subject, advocates eliminating any contact with oxygen.

A literature review by the National Horticultural Society of France (SNHF) found references to phytosanitary use only for the late 1990s and onwards, and no scientific evidence of corresponding effects.

[2] In France, the introduction of new agricultural framework legislation in 2006 triggered a major controversy, the so-called "nettle manure war".

It was widely seen as a lobbying success for agroindustry and a grotesque culmination of continued attacks on smallholder agriculture.

A case involving agriculturist Éric Petiot, who was prosecuted by the General Directorate of Competition, Consumption and Repression of Frauds (DGCCRF) for co-authoring a popular book on plant manures, attracted public attention.