Innovation in grapevine water status monitoring and drought adaptation: leaf angle and temperature regulation

Increase of frequency, duration, and intensity drought heatwave related water heat crops stress are among the principal effects climate change. This paper reports: (i) effect calcite particle film (CaPF) as a mitigation strategy against in well-watered (WW) or drought-stress (D) conditions; (ii) response leaf angle variation to stomatal conductance changes induced by Aleatico grapevine cultivar. Results have showed that CaPF, under WW conditions, reduced temperature, increased gas exchange, but, very severe stress, CaPF treatment was ineffective. Leaf ranged from 70° (WW vines) 100° (drought stressed good fit ( R 2 =0.81) with within range 0.25 – 0.05 mol m -2 s –1 proving it might be reliable proxy vine status.