The purpose of the work carried out in 2021 was to evaluate the effectiveness of new biosolutions. For this purpose, these biosolutions were tested over the entire period (i.e. the equivalent of about ten treatments). A registered biosolution provided a reference. The new solutions tested did not control the development of the fungi on either mildew or powdery mildew. It should be noted that the registered reference presented an equivalent or even inferior efficacy to the tested innovations. Thus, although the level of effectiveness was not sufficient, in some trials, certain solutions showed an impact at the beginning of the contamination phase
In the long term, it is therefore possible to consider integrating these solutions as a complement to a conventional programme. For the time being, it is planned to carry out one more year of these trials to better understand the effect of biosolutions in different disease development contexts.