Effects of Free-Air Carbon Dioxide Enrichment on Sap Flow and Canopy Microclimate of Maize Grown under Different Water Supply. - Manderscheid, R.; Erbs, M.; Burkart, S.; Wittich, K.‐P.; Löpmeier, F.‐J.; Weigel, H.‐J. (Journal of Agronomy & Crop Science, 2016)