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Gray leaf spot (GLS) is a foliar fungal disease that affects grasses. In grasses other than maize it is caused by Pyricularia grisea , which only infects perennial ryegrass , tall fescue , and St. Augustine grass in places with warm and rainy climates.
Corn grey leaf spot is an important disease of corn production in the United States, economically significant throughout the Midwest and Mid-Atlantic regions. However, it is also prevalent in Africa, Central America, China, Europe, India, Mexico, the Philippines, northern South America, and Southeast Asia. [ 6 ]
Important diseases: Pestalotiopsis tip blight of conifers, Gray leaf spot Pestalotia is primarily a secondary pathogen. It is saprophytic on dead and dying tissues and is weakly parasitic infecting wounds under moist conditions. Tips of conifer branches particularly Leyland cypress, arborvitae and juniper turn brown to grayish in color.
A leaf spot is a limited, discoloured, diseased area of a leaf that is caused by fungal, bacterial or viral plant diseases, or by injuries from nematodes, insects, environmental factors, toxicity or herbicides.
Gray ear rot Botryosphaeria zeae = Physalospora zeae. Macrophoma zeae [anamorph] Corn grey leaf spot. Gray leaf spot Cercospora leaf spot Cercospora sorghi = Cercospora sorghi [clarification needed] Cercospora zeae-maydis [5] [6] [7] Cercospora zeina [6] [7] Helminthosporium root rot Exserohilum pedicellatum = Helminthosporium pedicellatum
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Alternaria black spot of canola or grey leaf spot is an ascomycete fungal disease caused by a group of pathogens including: Alternaria brassicae, A. alternata and A. raphani. This pathogen is characterized by dark, sunken lesions of various size on all parts of the plant, including the leaves, stem, and pods. Its primary economic host is canola.
Penn State’s Greg Kerkvliet lifts and drives Lehigh’s Nathan Taylor (285 lbs) to the mat during Sunday’s match at Rec Hall at Penn State. Kerkvliet won by major decision (11-1). Penn State ...