The effect of wind on the grapevine
Pienaar, J W
University of Stellenbosch
Wind affected the vegetative and reproductive characteristics of the project vineyard. Because of altered canopy characteristics, the microclimate also changed and therefore the stomata conductance was affected. Lateral shoot development and therefore lateral (young) leave area was enhanced by wind. This lead to exposed vines producing grapes with a different composition compared to that of sheltered vines. The results clearly show that sheltered and exposed vines produced grapes that will lead to a variation in wine style.
Aims for the project: Monitoring the growth and performance of the grapevine as affected by the different wind regimes during the different phenological stages over a period of 18 to 20 months Establishing the long term effects of persistent moderate to dominant winds on the grapevine. Drawing a conclusion concerning the above mentioned aims to optimize the site selection process and the cultivating practices in vineyards with special regard to canopy management.