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Pseudoperonospora cubensis is a species of water mould known for causing downy mildew on cucurbits such as cantaloupe, cucumber, pumpkin, squash and watermelon. This water mould is an important pathogen of all these crops, especially in areas with high humidity and rainfall, such as the eastern United States.
Cucumber mosaic virus (CMV) is a plant pathogenic virus [1] in the family Bromoviridae. [2] This virus has a worldwide distribution and a very wide host range, [ 3 ] having the reputation of the widest host range of any known plant virus. [ 4 ]
Cucumber leaves afflicted with various stages of Cucumber mosaic virus. A mosaic virus is any virus that causes infected plant foliage to have a mottled appearance. Such viruses come from a variety of unrelated lineages and consequently there is no taxon that unites all mosaic viruses.
Spores of powdery mildew on cucumber leaf seen through Foldscope Section of leaf of cucumber showing powdery mildew infection, photo taken with Foldscope Podosphaera xanthii (a.k.a. Sphaerotheca fuliginea ) is the most commonly reported cause on cucurbits. [ 27 ]
Bacterial wilt of cucurbits is cause by the bacteria Erwinia tracheiphila, it affects cucumber, squash, muskmelon, pumpkin, gourds; [3] certain varieties of cucumber and squash have different degrees of resistance. Once a plant is infected, the bacteria spread through the xylem vessels from the area of infection to the main stem, and the entire ...
An Arizona produce company is recalling whole cucumbers distributed in 26 states and Canada because they could contain salmonella. In a filing posted by the Food and Drug Administration on ...
The virus affects the young leaves with green and light green spots, even yellow-green spots. These spots have a slower development rate than the rest of the leaf. Sometimes the veins remain green. In heavy infection young leaves are even deformed. The activity of the virus is reduced when the leaf ages. Fruit drop (abortion) is common.
Too much sunlight can also be a problem; it can cause leaves at the top of the plant to turn yellow or brown with sunscald. The solution: Peace lilies grow best in bright, ...