A genus of minute fungi which form a floccose mass of filaments on decaying fruit, etc. Many forms once referred to this genus are now believed to be temporary conditions of fungi of other genera, among them the vine mildew (Oïdium Tuckeri), which has caused much injury to grapes.
(oh-ee'-d'yum) The powdery mildew fungus that devastated the vineyards of Europe in the mid-nineteenth century. Like the phylloxera plague that would follow, Oidium was brought from America. It is now controlled in the vineyard by spraying.
n. (pl. oidia) Thin-walled cell that functions as a spore or in sexual processes in fungi.
A disease of the leaves and the grapes, a fungus made up of white filaments. It is treated with sulphur.
This is a common fungal disease also known as powdery mildew which attacks vine leaves, shoots and tendrils; after flowering the berries can be affected with a subsequent loss of quality and an almost certain reduction of yields.
Another name for powdery mildew, the fungi that can cause severe damage to grape crops.
From of asexual spore involved in bringing about dikaryotization in Basidiomycotina
A fungal disease, also known as powdery mildew. Like many vine diseases it thrives in damp conditions. It results in a reduction in quality and yields, but fortunately may be controlled with the application of sulphur, a practice permitted for even organic and biodynamic winemakers.
One of several fungi that can cause severe damage to grape crops; also called powdery mildew.
This article is about a type of fungal spore. For the ascomycete genus, see Oidium (genus).
Oidium is a genus of Deuteromycetes, where traditionally most anamorphs of the order Erysiphales are included.