What is sugar loading? The sugar loading of grape berries (evolution of the quantity of sugars per berry), widely described by Pr. Deloire during the last decade, constitutes a physiological marker integrating the functioning of the vine in its environment. The sugar loading includes two distinct periods: A first period […]

The use of NDVI in agriculture is no longer a new idea. As a result of numerous publications demonstrating the capacity of this measure to assist vintners in their technical decision-making, the number of NDVI maps  providers has increased considerably in recent years. Given the many choices available, winegrowers may […]

NDVI is an English acronym meaning Normalized Difference Vegetation Index, which could be translated as a Normalized Vegetation Index. This index reflects the quantity of so-called “photosynthetically active” biomass. It is calculated according to the formula: Where R and PIR are respectively reflectances measured in the red and near infrared […]

How much does vine transpiration increase during a heat wave? To address that question, a team of Australian researchers led by Edwards reported the following observations in 2011.While working in a greenhouse with Cabernet Sauvignon, researchers generated  a 2-day high-temperature event by imposing maximum daytime temperatures near 41°C.  Before imposing the […]

Last week, Fruition Sciences attended the American Society for Enology and Viticulture (ASEV) 68th Annual Conference in Bellevue, Washington.  This event was a true meeting of the minds for North America’s top scientists and practitioners related to winemaking and grape growing. Hundreds of recently released studies were discussed throughout the three […]