Sap Flow Data show Grapevines withstand extreme Heat

Grapevines can tolerate extreme heatwaves when soil moisture is maintained through irrigation. This was demonstrated in a study conducted in the Riverina region (NSW, Australia), where phytomonitoring stations equipped with sap flow sensors, dendrometers, as well as temperature and humidity sensors were installed on various grapevine varieties. Despite temperatures exceeding 40 °C, sap flow remained stable as the vines were able to absorb sufficient water.

Sap flow is a commonly used indicator of plant health, as a decrease in sap flow often indicates stress. In this study, sap flow in the vines remained positively correlated with increasing temperatures. Such measurements are essential for better understanding the effects of heatwaves on crops and for developing targeted irrigation strategies. These findings highlight the importance of irrigation management during heatwaves, particularly in viticulture.

Read full article

Devices for grapevines and irrigation control: DL-ISF, DL-ZN,
DL-LWS, DL-ILT, DL-TRS12, DL-TRS21