Carbon and nitrogen partitioning in either fruiting or non-fruiting grapevines: effects of nitrogen limitation before and after veraison

International audienc

Effectos del enherbado en viticultura sobre la nutricion mineral, el rendimiento y el vigor

International audienc

Efectos del uso de cobertura vegetal en viticultura sobre la calidad del mosto y las caracteristicas organolepticas del vino

International audienc

Grape berry composition of vines grown under nitrogen limitation before and after veraison

National audienc

Nitrogen availability in vineyard soils according to soil management practices. Effects on vine

International audienc

Incidence of permanent grass cover on grapevine phenological evolution and grape berry ripening

International audienc

Heat requirements for grapevine varieties is essential information to adapt plant material in a changing climate.

Precocity for fruit ripening is a genetically determined characteristic that is highly variable from one cultivar to another. In traditional wine-growing regions of Europe, growers have used this property to adapt the vines to local climatic conditions in order to maximize terroir expression. Due to global warming, the choice of later ripening grapevine varieties might be necessary in many regions to maintain late ripening conditions favourable for terroir expression. Hence, precise heat requirement data for each grapevine variety is essential information. Phenology (budburst, flowering, veraison and ripeness) and temperature data have been collected for many varieties in a wide range of locations over a great number of vintages. Heat summations base of 10°C were calculated for each variety to reach key phenological stages. However, a more sophisticated agro-climatic model might be necessary to increase the precision of a classification of varieties according to their precocity

La connaissance des besoins en chaleur des principaux cépages de vigne est une données essentielle pour adapter le matériel végétal dans un contexte de changement climatique

International audienc