900 of California’s vineyards uses VESTA from SOBEC and has done it for years. The better nutrition uptake of the crop using VESTA gives higher yield and a much better grape quality.
A study by UC Davis shows that VESTA is depressing effect of Armillaria root disease. See the report here
The pictures are from a farm operating near Fresno, California. The farm have 200 HA of wine grapes, 20 HA of raisin-type grapes (Thompsons seedless). They have been using VESTA for many years as one of the more than 900 wine growers uses VESTA in California. See picture of their grapes from 2003.
At this farm in California they make grapes for raisins. The four pictures below are from 2012 and you can easily see the difference between the grapes that are VESTA treated and the not treated.