From Vine To Wine

This trial posed the question, “Can potassium be used to enhance wine grape quality?”  The answer is yes.

The trial shows that Potassium can be applied to wine grapes to achieve improved colour, and Brix, and to bring forward harvest dates by at least one week. Studies in Australia and New Zealand have shown that the use of a commercial potassium product containing no nitrogen and balanced amounts of potassium and phosphorous (0-5-20) can increase colour and brix levels when applications are targeted to specific timings during the season, such as veraison and before harvest.

Read full article here.