LALVIGNE Foliar Sprays for Mitigating Unbalanced Ripening Patterns
Hot and dry conditions can improve ripening and lower pyrazine levels; however, intense post-veraison heat and drought can have the opposite effect.
The hottest conditions can cause some of the slowest ripening and latest harvests. Grapevine stomata begin to close around 95°F, and higher temperatures can damage the photosynthetic apparatus and impair fruit ripening. The vine can shut down and ceases ripening during these conditions, leading to slow flavor development and slow pyrazine degradation while dehydration increases sugar and acid concentrations.
LALVIGNE foliar sprays are a tactic for mitigating unbalanced ripening patterns. They are natural inactive yeast derivatives applied around veraison. They activate the metabolic pathways that increase accumulation of phenolics and aromatic precursors. At the same time, they also activate the secondary metabolism of the vine that is correlated with increased pyrazine degradation (Suklje et al., 2016).
LALVIGNE is also compatible with regenerative agriculture and sustainable farming practices. For more information on the effects of heat and drought on underripe characters, see our article "Managing Underripeness Caused by Hot, Dry Growing Seasons."
Beat the heat and order LALVIGNE now to apply at veraison!
Questions? Reach out to our Vineyard Market Manager, Andy White, about setting up a trial for your 2021 season.