brown leaf spot

Listing 1 - 10 from 282 for brown leaf spot

Sweet corn Disease Descriptions - Brown Leaf Spot
... Sweet corn Disease Descriptions - Brown Leaf Spot Brown Leaf Spot Symptoms on Sweet corn Brown Leaf Spot (fungus - Physoderma maydis): The fungus causing this disease occurs in most fields but seldom does ... first symptom of the disease is small circular spots. As they mature, they turn dark brown. Rotation and deep burial of stalks will help reduce losses to this fungus. September, 1996 ...
plantpathology.tamu.edu

New Disease Reports - First report of brown leaf spot caused by Bipolaris australiensis on Cynodon spp. in China
... report of brown leaf spot caused by Bipolaris australiensis on Cynodon spp. in China Reports Search ... leprosis virus (CiLV-C) in Honduras, Central America First report of brown leaf spot caused by Bipolaris australiensis on Cynodon spp. in China K.F. ... To the best of our knowledge, this is the first report of brown leaf spot caused by Bipolaris australiensis on Cynodon spp. in China. References Liu ...
www.bspp.org.uk

Strawberry Leaf Spot Diseases, HYG-3015-95
... during moist, warm conditions. Leaf Spot Leaf spot is caused by the fungus, Mycosphaerella fragariae. Symptoms of leaf spot first appear as circular, deep purple spots on the upper leaf surface. These spots enlarge and the centers turn grayish to white on older leaves and light brown on ...
ohioline.osu.edu

Cherry Leaf Spot, HYG-3021-95
... Cherry Leaf Spot, HYG-3021-95 Ohio State University Extension Fact Sheet Plant Pathology 2021 Coffey Road, Columbus, OH 43210-1087 Cherry Leaf Spot HYG-3021-95 Michael A. Ellis Cherry leaf spot is one of ... purple spots appear on the upper surface of the leaf. Spots gradually enlarge to about l/4 inch in diameter and turn reddish-brown. Lesions may emerge to produce large, irregular spots ...
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New Disease Reports - First report of Rhizoctonia solani causing leaf spot of Adhatoda vasica
... 1991). Figure 1: Symptoms of Rhizoctonia leaf spot on Adhatoda vasica leaf Figure 2: Close-up view of Rhizoctonia leaf spot on Adhatoda vasica leaf During October-November 2005, a leaf spot disease was found in A. ... Fully developed spots were water soaked, dark brown to blackish, scattered all over the leaf lamina. Margins of the spots were diffuse and each spot had a light coloured dot in the ...
www.bspp.org.uk

Leaf Spot
... original lesion. Gloeocercospora Leaf Spot (Gloeocercospora inconspicua) is of minor importance as a leafspot disease in NC. It appears on the foliage by mid-summer as large dark brown, circular to angular lesions surrounded by a dark border. Alternaria Leaf Spot (Alternaria tenuissima) occurs primarily in the spring during prolonged ...
www.ces.ncsu.edu

ODIN011 - Entomosporium Leaf Spot on Red Tip
... are the first symptoms of Entomosporium leaf spot. Numerous small spots may coalesce into large maroon blotches on heavily diseased leaves. Leaf spots on mature leaves have ash brown to light gray centers with a distinctive deep red to maroon border. Tiny black specks, spore producing bodies of the fungus, can often be observed in the center of each leaf spot ...
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Angular Leaf Spot of Cucumber
... Leaf Spot of Cucumber Angular Leaf Spot of Cucumber Author: Mary Ann Hansen, Extension Plant Pathologist, Department of Plant Pathology, Physiology and Weed Science, Virginia Tech Publication Number: 450-700, Posted December 2000 Angular leaf spot ... causes small, angular, watersoaked areas which later turn brown or straw-colored (Fig. 1). Leaf lesions are delimited by the veins, hence the angular ...
www.ext.vt.edu

Iris Leaf Spot
... Leaf Spot Iris Leaf Spot Author: Mary Ann Hansen, Extension Plant Pathologist, Department of Plant Pathology, Physiology and Weed Science, Virginia Tech Publication Number: 450-600, Posted May 2000 Heterosporium leaf spot, or iris leaf spot ... first evidence of this disease is the appearance of small brown spots with water-soaked margins near the leaf tips. During the early part of the season, these ...
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ivy leaf spot
... as bacteria. Fungus Leaf Spot can be caused by Colletotrichum trichellum, Amerosporium, Glomerella, Phyllosticta, and Ramularia. They appear as irregular tan to brown spots or may cause marginal browning of the leaf edges. ... see tiny dark brown to black dots within the spots. These are the fruiting bodies of the fungus. These create the spores that spread the fungus. Bacterial Leaf Spot is caused ...
www.ivy.org

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