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These necrotic lesions, localised in area and shape, consist of dead and collapsed cells of the host leaves. [1] One distinct feature of fungal infections is that there may be visible spores in the centre of leaf spots. [7] Fungal leaf spots often have a brown, black, tan or reddish centre with a darker margin and vary in size. [11]
After you dethatch and aerate your lawn, spread a ¼- to ½-inch layer of high-quality soil over the entire yard, especially in problem areas where grass is thinning. Work the topdressing into the ...
Red thread disease is a fungal infection found on lawns and other turfed areas. It is caused by the corticioid fungus Laetisaria fuciformis and has two separate stages. The stage that gives the infection its name is characterised by very thin, red, needle-like strands extending from the grass blade.
Snow mold is a type of fungus and a turf disease that damages or kills grass after snow melts, typically in late winter. [1] Its damage is usually concentrated in circles three to twelve inches in diameter, although yards may have many of these circles, sometimes to the point at which it becomes hard to differentiate between different circles.
A lack of moisture during winter can cause a few lawn issues. One potential problem is root desiccation, which weakens the grass, making it more vulnerable to insect and disease problems in spring.
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The publication notes that predicting the weather is not an exact science, but, in general, most of the U.S. is experiencing a warmer, wetter winter, and only a few spots can expect snow.
Phomopsis cane and leaf spot is a disease that causes symptoms in the common grapevine species, Vitis vinifera, in many regions of the world. [2] This disease is mainly caused by the fungal pathogen, Phomopsis viticola, and is known to affect many cultivars of table grapes, such as Thompson Seedless, Red Globe, and Flame Seedless. [3]