Across varietals and regions, Agrothermal Systems® proves that use of heat sets more berries per bunch.

Agrothermal customers participating in 2018 growing season fruit-set data collection saw a significant increase in fruit set across varietals. Thermaculture technology uses interval heat-treatments to raise the plant temperature to the levels needed for optimal fruit set and growth, even in cold, wet weather.

Red Varietals, including Pinot Noir, Cabernet Sauvignon, and Merlot, realized an average 27% more berries set per bunch over control. Pinot Noir in particular rose a staggering 50%. White varietals, including Petite Mansang, Chardonnay and Viognier, achieved an average 12% increase, with Chardonnay standing out at 15% more berries per bunch.

%

Increase In Pinot Noir Berries Per Bunch

2018 Fruit Set Results for US Customers

Marty Fischer, CEO of Agrothermal Systems explains, “Thermaculture can briefly simulate good, hot, dry conditions when Mother Nature gives the grower wet and cool weather. This allows our customers to manage adverse climatic conditions to create better and more even fruit set .” Fischer continues, “Year over year we are consistently seeing proof of this with more berries on overall healthier bunches within our customers treated blocks.”

Data collection for 2018 was conducted in Southern & Northern California, Oregon and Virginia on 18 test and control blocks. Treatments began at or prior to bud break through verasion.

Virginia experienced a particularly challenging wet season, but Thermaculture, coupled with the Agroblow™ fans to blow standing water off vines prior to heat-treatments, was especially impactful. Daniel Mumbauer of Stone Tower Winery in Virginia commented, “We’re seeing great results from our Viognier…compounded with the fact that this is the worst year I’ve ever seen!”

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