Improving grapevine water resilience with LalVigne PROHYDRO™
Key take aways
- LalVigne PROHYDRO™ helped grapevines maintain stronger water status and physiological activity under moderate and severe water deficit conditions.
- Treated vines preserved photosynthesis and stomatal conductance even with reduced irrigation volumes, improving overall water use efficiency.
- Foliar applications stimulated endogenous proline accumulation, supporting osmotic adjustment and protection against oxidative stress.
- LalVigne PROHYDRO™ reduced oxidative stress markers (H₂O₂) and helped maintain stable photosystem efficiency during drought conditions.
- Yield and fruit composition were largely preserved despite irrigation reductions of up to 20–60%.
- The study projected potential water savings of up to 340 m³/ha while maintaining vineyard performance under controlled deficit irrigation strategies.
- LalVigne PROHYDRO™ offers a practical biostimulant strategy for improving vineyard resilience and irrigation efficiency in climate-stressed viticulture.
Managing vineyard water stress with less irrigation
Water scarcity and heat stress are becoming major challenges in modern viticulture. Rising temperatures and reduced water availability increasingly affect vine physiology, photosynthesis, yield and fruit composition. In this context, growers are looking for biological solutions that help vines tolerate difficult conditions related to drought, while maintaining vineyard performance.
LalVigne PROHYDRO™ is a proline-rich specific yeast derivative developed to improve grapevine resilience under water deficit conditions. Applied foliarly, it helps vines maintain water status, physiological activity and oxidative balance during periods of moderate to severe water stress.
How LalVigne PROHYDRO™ supports vine performance
The study evaluated Chardonnay vines subjected to different irrigation levels, ranging from full irrigation (100% ET) to severe restriction (40% ET). LalVigne PROHYDRO™ was applied five times between fruit set and veraison at 1 kg/ha.
Results showed that treated vines maintained:
- Higher leaf water potential
- Better photosynthetic activity
- Improved water use efficiency
- Lower oxidative stress
- Stable photosystem efficiency under drought conditions
The treatment also stimulated endogenous proline accumulation in leaves, helping vines maintain osmotic balance and protect cellular function during stress. Treated vines accumulated lower levels of hydrogen peroxide (H₂O₂), indicating reduced oxidative damage.
Preserving yield and fruit quality with less water
Despite reduced irrigation, LalVigne PROHYDRO™ treated vines maintained yield and fruit composition comparable to fully irrigated controls under moderate stress conditions. Even under more severe restriction, treated vines maintained physiological performance similar to vines receiving substantially more water.
The study estimated potential water savings of:
- Approximately 170 m³/ha while maintaining full vine performance
- Up to 340 m³/ha in a controlled deficit irrigation strategy
A practical tool for climate-adaptive viticulture
The results of this study show that LalVigne PROHYDRO™ can help vines better tolerate drought conditions by improving osmotic adjustment, maintaining photosynthesis and reducing oxidative stress.
For growers facing increasing water limitations, LalVigne PROHYDRO™ offers a practical biostimulant strategy to improve irrigation efficiency while preserving vine balance and fruit quality.
FAQ
LalVigne PROHYDRO™ is a proline-rich yeast derivative used as a foliar biostimulant to improve grapevine tolerance to drought and heat stress.
It supports osmotic balance, preserves photosynthesis and helps reduce oxidative stress through increased endogenous proline accumulation.
Yes. The study showed that treated vines maintained strong physiological performance even with irrigation reductions ranging from 20% to 60%.
Yield and fruit composition were largely preserved in treated vines despite reduced irrigation volumes.
Published May 12, 2026 | Updated May 19, 2026