The French scientist Professor Dr. Pierre Viala (1859-1936) was born into a winegrowing family and studied at the University of Agriculture in Montpellier (Languedoc-Roussillon) under the then director Gustave Louis Emile Foex (1844-1906). Together with Louis Ravaz, he identified the vine disease in 1883 black rot (Black red) and was mainly concerned with fungal diseases like the real one mildew, Finally, he became professor of viticulture in Montpellier and wrote the work "Ampélographie américaine" together with Foëx.
The French Ministry of Agriculture appointed him the head of a delegation sent to America in 1887, which was the suitable document vine for the finishing fighting the phylloxera should locate. He also met the American botanist Thomas Volney Munson (1843-1913), from whom he received valuable information. Together with Georg Engelmann, Alexis Millardet, Jules Émile Planchon and Charles Valentine Riley he is considered the savior of European viticulture from phylloxera.
His efforts resulted in the Vitis berlandieri (based on the American species Vitis cinerea var. Helleri ) generated lime-compatible document "41 B", which is a new planting of the areas Champagne and cognac allowed. In 1890 Viala became professor of viticulture at the "National Agronomique" institute in Paris and in 1891 wrote the doctoral thesis on the Doctor of Natural Sciences. Together with Ravaz, he founded the magazine "Revue de Viticulture", which was published regularly from 1894 to 1949.
In the period 1901 to 1910 was in collaboration with the winegrower Vermorel (1848-1927) after ten years of studies and meticulous research with a team of seventy, published the work "Ampélographie - Traité général de viticulture" in seven volumes. It was that at that time ampelographic Standard work and contained 24,000 varieties with their synonyms, 570 mostly colored lithographic plates and numerous illustrations (four of which are shown below). Viala was finally appointed Inspector General for Viticulture in 1897, was a member of the "Académie française" from 1919 and published many pioneering works on the ampelography and vine diseases.
Grand Noir de la Calmette : Par Viala et Vermorel - Agefotostock , Domaine public, Link
Tressalier ( Sacy ): Par Viala et Vermorel - Ampélographie, Domaine public, Link
Alphonse Lavallée : Par Viala et Vermorel - Ampélographie, Domaine public, Link
Dattier de Beyrouth ( Afus Ali ): Par Viala et Vermorel - Ampélographie, Domaine public, Link