leaf spot fungus

Listing 1 - 10 from 189 for leaf spot fungus

Orchid Disease : Leaf Spot Fungus
... Disease : Leaf Spot Fungus contact | links | site map home the greenhouse orchid growthpests, diseases & potting orchid lingo DISEASE: LEAF SPOT FUNGUS SYMPTOMS: Leaves have purplish brown or black spots that are sunken. Spots start ... of the plant's leaves, and then becomes visible on both sides of the leaf. TREATMENT: Plant needs to be taken outside and sprayed with a fungicide containing benomyl. ...
www.theorchidsite.com

ODIN011 - Entomosporium Leaf Spot on Red Tip
... spore producing bodies of the fungus, can often be observed in the center of each leaf spot. Spots similar to those on the leaves can develop on leaf petioles and tender stem growth during ... and young shoots are important in the survival of the Entomosporium leaf spot fungus. Fallen, diseases leaves are less important sources of the fungus. Masses of spores are released during periods of wet weather ...
www.ces.ncsu.edu

Strawberry Leaf Spot Diseases, HYG-3015-95
... 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 ... Control Leaf spot and leaf scorch are controlled most effectively by the use of resistant varieties. The following junebearing varieties are reported to be resistant to both leaf spot and leaf scorch ...
ohioline.osu.edu

Cherry Leaf Spot, HYG-3021-95
... leaf petioles and fruit pedicels, causing fruit to ripen unevenly. Spots usually do not form on fruit. Causal Organism Cherry leaf spot is caused by the fungus, Blumeriella jaapii (previously called Coccomyces hiemalis). The fungus ...
ohioline.osu.edu More from this site

Cucumis and Cucurbita species Disease Descriptions - Alternaria Leaf Spot
... species Disease Descriptions - Alternaria Leaf Spot Alternaria Leaf Spot Symptoms on Cantaloupe Alternaria Leaf Spot (fungus - Alternaria cucumerina): Small, circular watersoaked spots first appear on the leaves, later enlarging ... and margins appear giving the diseased area a "bull's eye" appearance. The fungus overwinters in crop residue and on other cucurbit plants. Numerous air-borne spores ...
plantpathology.tamu.edu

Daucus carota var. mativue Disease Descriptions - Leaf Spot
... var. mativue Disease Descriptions - Leaf Spot Leaf Spot Symptoms on Carrot Leaf Spot (fungus - Cercospora carotae): This disease may occur at any position on the leaf but is most common on margins. Spots are ... and dark margin. Spots on the petiole may encircle it causing defoliation. Leaf spot is distinguished from leaf blight by the nearly circular, sharply defined lesions with a yellow halo ...
plantpathology.tamu.edu More from this site

New Disease Reports - First report of Rhizoctonia solani causing leaf spot of Adhatoda vasica
... 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 ... plants were covered with polythene bags for 36 hours. Typical leaf spot symptoms started developing after 10 days. The fungus was successfully reisolated of from artificially developed symptoms. Although ...
www.bspp.org.uk

New Disease Reports - First report of Alternaria alternata causing leaf spot on Stevia rebaudiana
... citrus leprosis virus (CiLV-C) in Honduras, Central America First report of Alternaria alternata causing leaf spot on Stevia rebaudiana C.K. Maiti, S. Sen, R. Acharya and K. Acharya* Molecular and ... an infected leaf Figure 2: Conidia of fungus isolated form leaf lesion, Bar = 20 µm The pathogen was isolated as a pure culture on potato dextrose agar media (Fig. 3). The fungus produced abundant ...
www.bspp.org.uk More from this site

Leaf Spot
... Gloeosporium leaf spot which can cause severe defoliation and reduction in yield. This disease can produce flecking, leaf anthracnose and stem lesions. Gloeosporium leaf spot was first described as a stem and leaf ... fungus growth on the upper leaf surface of some cultivars, or it may be indistinct and confined to the lower leaf surface. Chlorotic spots with reddish borders are common on the leaf ...
www.ces.ncsu.edu

Entomosporium Leaf Spot of Photinia
... Leaf Spot of Photinia Entomosporium Leaf Spot of Photinia Author: Mary Ann Hansen, Extension Plant Pathologist, Department of Plant Pathology, Physiology and ... grown. All of these ornamentals are susceptible to leaf spotting caused by the fungus Entomosporium mespili. Other ornamentals reported to be hosts of the fungus include juneberry (Amelanchier spp.), flowering quince (Chaenomeles spp ...
www.ext.vt.edu

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