This technique consist in one or more injection(s) inside the trunk of grapevine of peroxide hydrogen in order to limit symptoms expression. This technique is applied by winegrowers in South of France (Madiran), Spain (Galicia) and Portugal (Douro) on vines showing Esca or Botryosphaeria dieback.
This document is the result of interviews made on field with the principal objective to highlight the diversity of techniques used in field. To date, no assessment, no validation or checking efficacy of this practice was made. In the absence of any assessment, its success in different conditions of the ones exposed is not guarantee.