Our brief was to provide a UK vineyard with a frost protection strategy and equipment recommendation. A vineyard site frost risk assessment was carried out with the vineyard manager to identify areas most prone to frost. The assessment considered topography, surrounding terrain, site architecture, soil character, cultivars, vine training system, and vine management practices. All this valuable information, when combined with our local temperature data and a vineyard site air flow model, enabled a comprehensive frost risk analysis.
Our findings both concurred with the vineyard managers experience regarding risk areas, and identified new areas at risk from cold air building up below the vineyard site and back-flowing into the vineyard. In this case the quantity of cold air, during a radiation ground frost, draining into the site from surrounding land was significant and a high risk. Although the vineyard was on a slope, allowing cold air drainage, the land below the vineyard acted as a cold air lake and the significant build-up of cold air in it would cause it to flow back up into the vineyard. We recommended a set of passive protection measures and site amelioration strategies to reduce cold air flowing into the vineyard and limit the risk of damage in the lower regions.
We also recommended the best option of removing the cold air that was causing damage, through a Selective Inverted Sink (SIS). The SIS extracts the offending cold air by forcing it over 90m into the atmosphere and above the inversion layer, thus allowing warmer air to enter the vineyard site. We recommended where the SIS would need siting and the suitable model.
Spring and autumn frosts can severely damage vineyard productivity. Vinescapes represents both the mobile frost fan producer Mikrosera and selective inverted sink manufacturer ExFrost in Europe to deliver effective frost protection solutions for vineyards. Their suitability depends on the environment and terrain in which radiation frosts are problematic and each has significant advantages over other forms of frost protection. They are both fully automated, quiet, fuel efficient and mobile.
For more information on these products and a free evaluation of their suitability for a vineyard please contact us.
We also provides a range of data analysis and models of localised historic frost events to help safe-guard existing vineyards and provide intelligence for those looking at prospective sites. Our aim is to get you the most effective protection for your budget and vineyard site.