RT Journal Article
SR Electronic
T1 Leaf Wetness Spatial Variability within Grapevine Canopy
JF American Journal of Enology and Viticulture
JO Am J Enol Vitic.
FD American Society for Enology and Viticulture
SP 78
OP 82
DO 10.5344/ajev.2008.59.1.78
VO 59
IS 1
A1 Anna Dalla Marta
A1 Luca Martinelli
A1 Simone Orlandini
YR 2008
UL http://www.ajevonline.org/content/59/1/78.abstract
AB Leaf wetness duration (LWD) is key agrometeorological variable and strongly influences disease development. Knowledge about its spatial variability within a grapevine (Vitis vinifera) canopy may be significant in improving protection management. LWD was evaluated in different grapevine canopy layers through visual inspections conducted for 10 nights and a set of sensors installed for LWD monitoring during the growing season. Eight thermocouples were installed inside the canopy to measure leaf and air temperature, and an agrometeorological station was set up near the experimental field for data collection. The goal of this study was to assess LWD spatial variability within a cordon-trained grapevine canopy and its possible relationship with a temperature microclimate. Results showed that LWD varies in a cordon-trained grapevine depending on canopy layer. Leaf temperature varies in the same manner, thus demonstrating its strong influence on LWD.