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 During a dry winter, soil nitrogen mineralization rate can be reduced. As a consequence, once the season starts and even if soil moisture is not limited after budbreak, vine nitrogen accumulation can be reduced for lack of early season nitrogen supply following a dry winter as reported by Californian authors. […]
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 the Two Color Map? Multiplex two color mapping is useful to support the following question around picking decision timing: “Can I source enough fruit from a uniformly colored area to fill one tank size at harvest?“ The multiplex two color mapping helps highlight areas with different color concentrations within your vineyard. The speed […]
Multiplex Signature Multiplex Signature provides useful insight to answer the following questions around the timing of picking decisions: Does it make sense to harvest earlier if the rate of total anthocyanin decline is too fast before harvest? Does it make sense to modify cluster microclimate to preserve total anthocyanins content […]
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 […]
Made in France by Fruition Sciences’ partner Force-A, the multiplex sensor is a non-destructive hand-held sensor that uses light to excite specific molecules within the plant tissues. Figure 1: The Multiplex sensor scanning a cluster Multiplex also records GPS locations of each measurement. This enables users to locate measurement points and […]
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 […]
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 and hasten maturity with high vigor vines consists of shoot thinning. The removal of undesired shoots reduces canopy density and crop load. However, if this […]
