Heibertshausen, Dagmar; Baus-Reichel, Ottmar; Hofmann, Uwe; Kogel, Karl-Heinz and Berkelmann-Löhnertz, Beate    (2007) Using Copper in Organic Viticulture: Doing it best with less?       Paper at:   3rd QLIF Congress: Improving Sustainability in Organic and Low Input Food Production Systems, University of Hohenheim, Germany, March 20-23, 2007.