CONTEXT Research has demonstrated that relationships exist between berry compositional changes during ripening and seasonal vine water deficit variations (here). The purpose of this blog is to highlight the specific relationship between berry sugar accumulation dynamics and seasonal vine water use. The results discussed in this study aim at improving winegrower practices […]

  CONTEXT Regardless of irrigation regime, canopy size can affect yield and berry quality attributes particularly under semiarid conditions. It may sound counterintuitive at first but, despite their “luxuriant look”, vines with higher canopies often experience a greater degree of water stress towards the end of the season. If there […]

Why Use Multiplex Map? Multiplex Map is useful to support the following decisions: How to refine harvest zone; How to highlight differences within your vineyard and select fruit with a similar ripening trajectory. What Is Multiplex Map? With Multiplex Map you can monitor spatial distribution in total anthocyanins from individual clusters. Measurements […]

What is Multiplex Signature? Multiplex Signature collects data on the same plants over multiple dates to reveal the speed of color accumulation. The measurements are typically done between veraison and harvest. Figure 1: Timeline showing fruit development period; Multiplex measurement are made during the “measuring period” in red   Multiplex […]

CONTEXT An australian researcher team led by Cooley have compared different levels of water deficit severity to analyze their effect on berry and wine composition (Cabernet Sauvignon). Interestingly their results show that the more limited irrigation regime, (ie. the  “prolonged” deficit irrigation) can improve the consistency of wine quality. By […]

In this blog we discuss why adapting harvest date to a warming environment is challenging …and why you may not have to trade off sugar concentration to get high color concentration. Higher sugar concentrations at harvest are often associated with an increase in temperature. This is observed empirically and scientifically in the […]

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 […]