The first symptoms of virus yellows are observed in France
L'Institut Technique de la Betterave
Monday, June 19, 2023
Rainfall stimulates the development of sugar beet - and also reveals the first symptoms of virus yellows in cultivations without aphicide protection. As a reminder, this viral disease is brought by the green aphids Myzus persicae. Elisa tests are in progress to determine which types of virus (polerovirus and/or BYV) are present in these beets. As a reminder, there are 3 types of jaundice: Moderate yellows (BMYV, BChV): orange-yellow color from the tip of the leaf. Necrotic brown appearance at the edge of the leaves (secondary fungi). Severe yellows (BYV): lemon yellow coloring of the blade between the veins, thickened and brittle leaves. Appearance of small brown-red spots that join together. Thinning of the secondary veins (or etching of the leaves). Mosaic yellows (BtMV): lightening of the veins and appearance of small, pale, translucent spots on the leaves of the heart.Click here to connect to the source of this storyClick here for more News and Views
As I browse the web researching various topics concerning the EU and UK sugar markets, I've been bookmarking interesting weblinks. Some of these are news clippings, some are links to official documents, and some are interesting data sources.