Introducing Grape Compass: A new easy-to-use fungal disease forecasting system

Effective control of grape fungal diseases such as powdery mildew, downy mildew, and botrytis is critical to profitable table and wine grape production. Given the high stakes for farmers, controlling these diseases typically relies on fixed preventative spraying that comes at a significant cost to the business as well as the environment. The ability to accurately forecast when disease outbreaks will occur, and then spraying accordingly, has the potential to achieve the required crop protection while significantly reducing the number of sprays applied in a season, and with that, reducing crop protection costs, increasing profitability, and reducing environmental impacts. Grape Compass provides farmers with this forecasting solution.


What is Grape Compass?

Grape Compass is a smartphone decision support application for viticulturalists/grape growers. It makes reliable forecasts of fungal disease risks in vineyards, thereby enabling precisely timed and targeted spraying to control powdery mildew, downy mildew, and botrytis. It is very easy to use, does not require a weather station, and has minimal data inputs. The application was created as a result of rigorous scientific research with the objective to maximize the quantity of high-quality grapes at the lowest business and environmental cost, thereby supporting the farm’s long-term sustainability.

What can Grape Compass do?

Grape Compass can provide insights about future disease pressure and optimal timing for fungicide sprays. It can also help avoid unnecessary sprays. Applying crop protection products only when it is required results in better quality grapes and wines, reduces the environmental footprint, and provides a financial saving. Grape Compass can help growers optimize their vineyard operations and take precision management in the vineyard to the next level.

What is Blue North’s role in Grape Compass?

Blue North is the in-country implementation partner for Grape Compass in South Africa and this exciting technology now forms part of our portfolio of products and services we offer. Blue North provides any support needed to users of Grape Compass in South Africa.

Want to know more?

If you would like to know more or have any questions, please contact us at or 071 828 1310.

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You can also visit the Grape Compass website for more information at: