The Influence of a Reflectant on Leaf Temperature and Development of the Globe Artichoke (Cynara scolymus L.)1

Abstract

Abstract A reflectant containing Zn and Ca among others, sprayed on the leaves of globe artichoke, increased the reflectance of the leaf. Treated leaves were always cooler than control leaves. The abaxial leaf surfaces of treated leaves were always warmer than the adaxial surfaces. The adaxial surface of treated small leaves had a higher diffusion resistance than the abaxial ones or either surface of control leaves. Higher diffusion resistance probably is the reason for better survival of treated plants in semi arid environments. Treated plants used water more efficiently than control plants.