The idea seems brilliant. The company De Sangosse has developed a new product, a so-called adjuvant, named LE 846, whose viscous and liquid properties help to reduce the spraying by a quarter against downy and powdery mildew, two difficult fungal diseases. This adjuvant will reduce the amount of fungicide remaining in the air.
There will be less waste. The drops do not bounce back but remain on the leaves (or wherever they are supposed to end up). The product is thixotropic, which means that it is liquid during the spraying but becomes viscous as soon as it lands on the vine. In a similar way that paint colour is fluid when stirred but still doesn’t run when you paint a wall. LE 846 can be used with copper, sulphur or synthetic chemical fungicides.
It will be sold for the first time for the 2020 season.
Read more vitisphere