older lesions

Listing 1 - 10 from 51 for older lesions

Older Lesions
Older Lesions Potato leaflets with older (six to eight days old), sporulating lesions. Back to Disease Cycle Back to Fry Lab Home Page
ppathw3.cals.cornell.edu

Early Blight of Potato and Tomato, HYG-3101-95
... markings, similar to those on leaves, often develop on stem lesions. If infested seed are used to start tomato transplants, ... tubers, early blight results in surface lesions that appear a little darker than adjacent healthy skin. Lesions are usually slightly sunken, circular ... to 3/8 inch deep. Deep cracks may form in older lesions. Tuber infection is uncommon under Ohio conditions. Causal Organism ...
ohioline.osu.edu

Disease Cycle
... lesions are only 1 to 2 mm in diameter (Fig. 4). Lesions enlarge as the pathogen grows through the tissues, and the pathogen can sporulate from older lesions when the environment is favorable (leaf wetness for more than 10 to 12 hours at moderate temperatures [60º-70ºF]) (Fig. 5). Sporulation may occur on lesions ...
ppathw3.cals.cornell.edu

FAQ - Bacterial Diseases Of Tomatoes
... lesions in a variety of shapes and sizes. Most lesions, however, are less than 1 mm in diameter and a dark-brown colour. Older lesions tend to be sunken. Only young fruit less than three cm in diameter can be infected by the bacterium. On leaves, lesions usually are surrounded by areas of yellowing or chlorosis. Lesions ... speck lesions can look a lot like young early blight lesions. If ...
res2.agr.gc.ca

New Disease Reports - Cashew leaf and nut blight – A new disease of cashew in Tanzania caused by Cryptosporiopsis spp.
... lesions, dark tan with a dark reddish brown margin, were formed on leaves, often vein limited and containing conidiomata. Lesions subsequently enlarge and coalesce causing blighting and defoliation. Older lesions ...
www.bspp.org.uk

Crop Diseases in Corn 1 (Purdue University)
... , oval to elongated water-soaked lesions enlarge to become brown, spindle shaped spots with yellow to reddish-brown borders. Lesions may coalesce and blight entire leaves. Older lesions will turn gray in the center ... 3) Symptoms: Narrow, small, linear to oval shaped leaf lesions. Lesion type may vary with the genotype of host and isolate. Lesions are grayish tan and surrounded by a light to darkly ...
www.btny.purdue.edu

Fruit Disease Focus - Blue Mold, Penicillium expansum
... light brown in color. The surface of older lesions may be covered by bluish-green spores that initially are nearly snow white in color. The lesions are of varying shades of brown, being ... formation of conidial tufts or coremia on the surface of well developed lesions. Under cold storage conditions, blue mold lesions (from wound infections) caused by the common species may be expected to ...
www.caf.wvu.edu

Signs and Symptoms of Powdery Mildew Disease
... nutrients, decreasing photosynthesis, increasing respiration, and increasing transpiration. Signs and Symptoms of Powdery Mildew Disease older lesions turn brown and appeared shriveled mycelium of fungus forms mats and appears as white, grayish ...
www.cals.ncsu.edu

Michigan Grape Society Newsletter, Volume 4 Issue 3, July 2003
... in manually pruned vineyards. This is attributed to the large amount of overwintered inoculum in older wood retained on the vines in this system. Dense foliage in some vineyards also likely ... and/or cracked with raised edges. On leaves, the center of older lesions drops out, giving the lesions a “shot hole” appearance. Lesions on green berries are reddish brown or grayish with darker margins ...
www.canr.msu.edu

SOY003 - Frogeye Leaf Spot of Soybean
... lesions are distinctive in that the brown spots are surrounded by a narrow red or dark reddish-brown margin. As lesions age, the central area becomes ash-grey to light brown. Older lesions ... Lesions on pods are reddish brown, may appear sunken, and are circular or elongate in shape. Older lesions ...
www.ces.ncsu.edu

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