{Project} PIWI-Prüfung: Sortenprüfung pilzwiderstandsfähiger (PIWI) Rebsorten. [Testing of fungus resistant vine cultivars.] Runs 1997 - 2007. Project Leader(s): Tuchschmid, Andreas; Levite, Dominique; Häseli, Andreas and Weibel, Franco, Research Institute of Organic Agriculture (FiBL), CH-5070 Frick. More information online at <http://www.fibl.org/de/schweiz/forschung/anbautechnik-pflanzenbau.html>.