Introduction Vines with too much yield are often maturing too slowly or producing a fruit of suboptimal quality for wine. A typical practice to reduce yield …
Can early defoliation improve fruit and wine quality from high yielding vines?
Category: Canopy management
Bioclimatic indices of the ripening period (2) : Thermal conditions at night
The Cool Night Index The Cool Night Index was created to study nocturnal conditions of grapes ripening according to the different wine-making regions (Tonietto, 1999 …
Sluggish ripening dynamics: who is the culprit in 2017 in Northern California?
This discussion is a follow up with our last blog on the 2017 maturation What is the situation end of september? A general disorder in sugar …
Mapping vine reserves variations to predict vineyard productivity
Leaving more growing nodes per vine at pruning (to increase vine productivity) and applying deficit irrigation strategies (to increase fruit and wine quality) are are …
Reveal the potential of each terroir with aerial pictures
How can a winegrower harness vineyard spatial variability to make better wines? Numerous studies carried out since 2000, on irrigated and non-irrigated vineyards have …
NDVI in viticulture (2): why is it challenging to use?
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 …
NDVI in viticulture (1) : a measure of reference in agriculture
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 …
Crop coefficient (3): monitoring transpiration ratio variations during growth
In our previous blogs we discussed how sap flow sensors can be used to characterize vine water needs under site- specific conditions. Various authors have …
Leaf Area Growth – Too little, too much, just right.
The leaf area exposed to sunlight, known as the grapevine canopy, captures sun energy to perform photosynthesis, regulate water use through transpiration, and modulate the microclimate …
Managing phenolics in the vineyard
Phenolics within the grape play an important role in a wine’s sensorial properties, such as color, astringency, mouthfeel, and bitterness. For example, increasing the size …