In what year did Flavescence Dorée first appear in Armagnac?

In what year did Flavescence Dorée first appear in Armagnac?

• A. 1920
• B. 1949
• C. 1958
• D. 1940

Answer: (B)

Flavescence Dorée is a grapevine disease caused by a phytoplasma and spread by leafhoppers. In Armagnac, records show the first confirmed appearance around 1949, which makes that year the earliest documented instance among the options. This starting point is important because it marks when growers and authorities began formal surveillance and containment measures, shaping how FD was managed in the region thereafter. The later dates don’t align with the historical record for Armagnac, so 1949 best fits the documented timeline and helps explain the development of regional control efforts.

Flavescence Dorée is a grapevine disease caused by a phytoplasma and spread by leafhoppers. In Armagnac, records show the first confirmed appearance around 1949, which makes that year the earliest documented instance among the options. This starting point is important because it marks when growers and authorities began formal surveillance and containment measures, shaping how FD was managed in the region thereafter. The later dates don’t align with the historical record for Armagnac, so 1949 best fits the documented timeline and helps explain the development of regional control efforts.