Irrigation of grapevines with saline water - I. Leaf area index, stomatal conductance, transpiration and photosynthesis Academic Article uri icon

abstract

  • Abstract In the Negev Desert of Israel, saline water is used to irrigate grapevines (Cabernet Sauvignon grafted on Roggeri) with the premise that the vine is only moderately salt sensitive. The objectives of the research were to study the effect of salinity on major production factors of the grapevine. Irrigation was applied with water of three salinity levels: 1.8, 3.3 and 4.8 dS m− 1 in four replications. Seasonal water application was 633 mm for all treatments. Biweekly measurements were taken from April to October. Green area index (GAI: the ratio of total leaf surface to the unit of land area allocated to each vine), photosynthesis, leaf conductance and transpiration fluxes were determined and the measurements were combined to form an exponential relationship between plant canopy and effective light interception. The effect of salinity was most pronounced on GAI and leaf …

publication date

  • January 1, 2006