CEVAP:

Early environmental movements include acts of preservationism and resource conservationism (Dreiling & Wolf, 2001: 36). The first international treaty on flora (plants) was signed in 1889 in Bern, Switzerland to prevent the spread of plant disease affecting vineyards in Europe. The treaties followed the Bern Treaty in the 1920s and the 1950s which also aimed protection of the European
agricultural lands from the disease (Lanchbery, 1998: 58).