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Plant Disease Identifier - All Types of Plant Infections

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All Types of Plant Infections Limit Type Sort By All Virus Bacteria Fungus Other Newest Oldest 1 653 heidbenati   Unknown Fungus, Unknown Plant October 25, 2009 Unknown Fungus, Unknown Plant 2 903 heidbenati   Cercospora Leaf Spot, Narrow Brown Leaf Spot October 25, 2009 Hydrangea macrophylla Plant infected with Cercospora Leaf Spot. Cercospora Leaf Spot is a common disease in landscaping planting of Hydrangea. It is usually seen in low-maintenance landscaping. It will unlikely kill the plant but will show many spots and leafs will shed prematurely. The fungus will likely spread to other healthy leaves by splashing water from the leaves that have fallen. Systematic position Division Eumycota, s 3 307 gardengeek   Oak Blister September 24, 2009 4 248 lfmitchell   Unknown Plant Disease September 21, 2009 5 1414 heidbenati   Red and White Tree Lichen July 23, 2009 Red and White Tree Lichen Spots 6 568 gardengeek   Purple Leaf Blister - Plant Disease May 18, 2009 7 989 gardengeek   Red Blister Plant Disease May 15, 2009 Cedar Apple Rust - Gymnosporangium juniperi-virginianae 8 1130 gardengeek   Red Blister Leaf Disease May 15, 2009 Maybe Plum leaf blister (Polystigma rubrum) - Red leaf spots 9 707 gardengeek   Unknown Plant Disease May 03, 2009 http://www.forestryimages.org/search/action.cfm?q=symptoms&a mp;Start=1&results=4440 10 261 Leslie   Clubroot May 03, 2009 Clubroot is a common disease of cabbages, radishes, turnips and other plants belonging to the family Cruciferae (mustard family). It is caused by Plasmodiophora brassicae, which was once considered a slime mold but is now put in the group Phytomyxea. It has as many as nine races. Gall formation or distortion takes place on latent roots and gives the shape of a club or spindle. In the cabbage such attacks on the roots cause undeveloped heads or a failure to head at all, followed often by decline 11 476 Jenny_Smith   Corn smut May 03, 2009 Corn smut is a disease of maize caused by the pathogenic plant fungus Ustilago maydis. In Mexico corn smut is called huitlacoche, sometimes spelled cuitlacoche), a Nahuatl word reportedly meaning raven's excrement. It is considered a delicacy, even being preserved and sold for a higher price than corn. For culinary use, the galls are harvested while still immature — fully mature galls are dry and almost entirely spore-filled. The immature galls, gathered two to three weeks after an e 12 1624 genny_happy   Early blight April 24, 2009 Alternaria solani is a fungal pathogen, producing a disease in tomato and potato plants called early blight. It produces small, darkened lesions on the plants, that spread into growing black spots of dead tissue, often killing most of the plant in the long run. Seeds infected with the disease may even damp off during germination. This disease can be prevented with some fungicides, including azoxystrobin, potassium bicarbonate, hydrogen dioxide as well as the biological control agent Bacillus 13 825 heidbenati   White rot root disease - Honey fungus or Armillaria April 23, 2009 Honey fungus or Armillaria is a genus of parasitic fungi that live on trees and woody shrubs. It includes about 10 species formerly lumped together as A. mellea. Armillaria is long lived and form some of the largest living organisms in the world. The largest single organism (of the species Armillaria ostoyae) covers more than 3.4 square miles (8.9 km²) and is thousands of years old. Some species of Armillaria are bioluminescent and may be responsible for the phenomena known as foxfire and 14 1381 heidbenati   Powdery mildew April 23, 2009 Powdery mildew is a fungal disease that affects a wide range of plants. Powdery mildew diseases are caused by many different species of fungi in the order Erysiphales. It is one of the easier diseases to spot, as its symptoms are quite distinctive. Infected plants display white powder-like spots on the leaves and stems. The lower leaves are the most affected, but the mildew can appear on any part of the plant that shows above the ground. As the disease progresses, the spots get larger and thick 15 312 gardengeek   Elm Disease April 23, 2009 16 4914 gardengeek   Tobacco Mosaic Virus March 26, 2009 When Tobacco Mosaic Virus infects a tobacco plant, the virus enters mechanically (For example through a ruptured plant cell wall) and replicates. After its multiplication, it enters the neighboring cells through plasmodesmata. For its smooth entry, Tobacco Mosaic Virus produces a 30,000 dalton protein called P30 which tends to enlarge the plasmodesmata. TMV most likely moves from cell-to-cell as a complex of the RNA, P30, and replicase proteins. The first symptom of this virus disea 17 422 Jenny_Smith   Brown Patch March 18, 2009 Rhizoctonia solani (teleomorph: Thanatephorus cucumeris) is a plant pathogenic fungus with a wide host range and worldwide distribution. It is one cause of the condition known as damping off, which is a cause of death of seedlings in agriculture. It is also responsible for wire stem, a disease of cabbage, cauliflower and related plants that is similar to damping-off but attacks older seedlings and produces a constricted, wiry stem. The most favorable conditions for disease development usua 18 380 Jenny_Smith   Dollar Spot March 18, 2009 The disease is caused by the fungus Sclerotinia homoeocarpa. Susceptible turfgrass include: all species of warm- and cool-season turfgrass. Tall fescues, Bentgrass, Zoysiagrass and Bermuda hybrids are particularly susceptible. Dollar spot is favored by temperatures between 60F to 85F and continuous high humidity and low soil moisture. This disease is particularly favored by warm days, cool nights, and intense dews. It also infects areas with low levels of nitrogen and becomes more severe in 19 404 Jenny_Smith   Dogwood anthracnose March 18, 2009 Dogwood anthracnose is caused by the fungus Discula. Brown, elliptical cankers may form at the base of dead branches. Drought, winter injury, and environmental stress predispose dogwood to anthracnose. Kousa dogwood (Cornus kousa) is resistant to this disease. 20 768 Jenny_Smith   Fireblight March 18, 2009 Fireblight is a destructive, highly infectious and widespread disease caused by the bacterium Erwinia amylovora.The disease affects plants in the Rosaceae family: Malus (apple and crabapple), Cotoneaster (cotoneaster), Prunus (flowering almond, plum and cherry), Chaenomeles (flowering quince), Crataegus (hawthorn), Eriobotrya (loquat), Sorbus (mountain ash), Photinia (photinia), Pyracantha (pyracantha) Rosa (rose), Amelanchier (serviceberry), Spirea (spirea) among others. The bacterium spend 21 342 Jenny_Smith   Cedar-Apple and Quince Rusts March 18, 2009 Cedar-apple rust and quince rust affect two groups of vastly utilized landscape plants. The cedar-apple rust fungus overwinters in galls that may grow to several inches in diameter on eastern red cedar and several other junipers. In the spring, brightly-colored, gelatinous horns emerge from the galls during wet weather. These horns consist of masses of spores that are spread by wind to newly-emerging apple, crabapple, and hawthorn leaves and fruit. By mid-summer, rusty or orange-colored spots ap 22 845 Jenny_Smith   Camellia Leaf Gall March 18, 2009 The disease is caused by the fungus Exobasidium camelliae. The severity of the disease varies according to the weather conditions when leaf expansion begins in the spring. Cool, moist weather favors disease development. Frequently overhead sprinkler irrigation provides the moisture necessary for disease development. The fungus survives during the winter in leaf buds and infects the developing leaf tissue. Instead of developing normally, the new leaves become thickened and succulent and may b 23 452 Jenny_Smith   Disease of Coneflower March 17, 2009 Coneflowers may get Pseudomanas or Xanthomonas leaf spot. Powdery mildew will also occur under the right weather conditions. Botrytis may also occur. May get brown dead areas as well as distorted leaves. These plants now get aster yellows. 24 493 Jenny_Smith   Azalea Leaf and Flower Gall March 17, 2009 The disease will cause pale green, pink white or brown fleshy galls, which are caused by the fungus Exobasidium vaccinii. Exobasidium vaccinii also infects species of Vaccinium including cranberries where it produces bright red, swollen spots on the leaves and fruits. Infected stems become thickened. 25 289 fadinha_green   Phomopsis Tip Blight of Juniper March 14, 2009 For most people, the first symptom noticed in the spring (early summer) is the die-back of the new shoot growth (tip blight). The new growth changes from light yellow green to red brown to ash gray as it dies from this fungal disease. Phomopsis juniperovora only kills the new growth - if more than just the new growth is killed, other fungal diseases or environmental injury is involved. Infection starts on immature scale leaves or needles, whereas mature needles are resistant. This infection prog 26 600 fadinha_green   Anthracnose - A Fungal Disease of Shade Trees March 14, 2009 Plant disease of warm humid areas, caused by a fungus (usually Colletotrichum or Gloeosporium). It infects various plants, from trees to grasses. Symptoms include sunken spots of various colours in leaves, stems, fruits, or flowers, often leading to wilting and dying of tissues. Dogwood anthracnose, caused by the fungus Discula destructiva, thrives in cool climates; in the U.S. it has caused severe losses to natural stands of dogwoods in mountainous regions. It is controlled by destroying diseas Add a New Gardening Disease

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