Louis Étienne Ravaz or Louis Ravaz ( Saint-Romain-de-Jalionas, Isère, 1863 —

Montpellier Montpellier (, , ; oc, Montpelhièr ) is a city in southern France near the Mediterranean Sea. One of the largest urban centres in the region of Occitania (administrative region), Occitania, Montpellier is the prefecture of the Departments of ...

, 1937) was a specialist of

ampelography Ampelography ( ἄμπελος, "vine" + γράφος, "writing") is the field of botany concerned with the identification and classification of grapevines, ''Vitis'' spp. Traditionally this has been done by comparing the shape and colour of the ...

and one of the creators of modern

viticulture Viticulture (from the Latin word for ''vine'') or winegrowing (wine growing) is the cultivation and harvesting of grapes. It is a branch of the science of horticulture. While the native territory of ''Vitis vinifera'', the common grape vine, ran ...

. In 1892, he founded the grape research station of Cognac (French: Station viticole de Cognac), that he directed for several years. He was professor of

(and from 1919 director) at the National School of Agriculture of Montpellier ( École nationale d’agriculture de Montpellier). He contributed to the diffusion of the use of the American varieties in the regions affected by French blight (Phylloxera) and investigated the pathologies of the grapevine. He published several works on viticulture. With Pierre Viala, he described the causes of the black-rot disease of grapevine and founded the "Revue de viticulture". He was the taxon author of: * ''

Guignardia ''Guignardia'' is a genus of fungi in the family Botryosphaeriaceae. The genus name of ''Guignardia'' is in honour of Jean Louis Léon Guignard (1852–1928), who was a French pharmacist and botanist. The genus was circumscription (taxonomy), c ...

'' Viala & Ravaz, Bull. Soc. mycol. Fr. 8: 63 (1892)

Works

* Le "Rot" blanc ou "Coniothyrium diplodiella (French) by G. Foëx and L. Ravaz / Montpellier : C. Coulet , 1888 * Les Vignes américaines : adaptation, culture, greffage, pépinières. (French) with Pierre Viala (1892)
link at gallica.bnf.fr

References

External links

* 1863 births 1937 deaths 20th-century French botanists French mycologists 19th-century French botanists {{France-scientist-stub