If your shoes pick up an orange-yellow dust every time you walk across the lawn, the grass is telling you something specific. That powder is fungal spores, not pollen, and it is the visible signature ...
Black stem rust (Ug99) Puccinia graminis f.sp. tritici (Ug99) is a serious disease of wheat and barley. While wheat in the United States is resistant to most strains of black stem rust, it is not ...
La rouille est une maladie cryptogamique due à des champignons Basidiomycètes micoscopiques du genre Puccinia. Ces champignons aujourd'hui largement distribués sur tous les continents peuvent toucher ...