 After this point however, the opening of the Arlberg railway saw an increase in foreign competition and in the first half of the 20th century bad harvests and parasites caused the wine industry collapse.Attempts by the government to sustain the industry by introducing compulsory crop spraying after 1890 failed.However, although the industry had declined significantly, viniculture was still important enough in Vaduz that its coat of arms, established on 31 July 1932, pictured bunches of grapes.