1
128 |
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On tomato and eggplant, blossom-end rot usually begins as a small water-soaked area at the blossom end of the fruit (Figure 1). This may appear while the fruit is green or during ripening. As the lesion develops, it enlarges, becomes sunken and turns black and leathery. In severe cases, it may completely cover the lower half of the fruit, becoming flat or concave Blossom-end rot is not caused by a parasitic organism but is a physiologic disorder associated with a low concentration of calcium in |
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2
346 |
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It may be a product of over watering. I can produce closeups if necessary. Please help me save my baby! |
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3
96 |
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4
473 |
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5
311 |
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6
401 |
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7
553 |
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Disease fungi (Fusarium oxysporum) enter through the roots and interfere with the water conducting vessels of the plant. As the infection spreads up into the stems and leaves it restricts water flow, causing the foliage to wilt and turn yellow. Symptoms often appear later in the growing season and are first noticed on the lower (older) leaves. As the disease progresses, the younger leaves will also be affected and the plant eventually dies. In many cases, only one branch or side of the plant sho |
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8
322 |
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I'm not sure if this is some part of the plant, a virus, bacteria, or fungus. |
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9
630 |
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10
221 |
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11
665 |
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My yellow straight neck squash plant has been healthy and producing. Today when I examined my garden this plant was wilted and curled with these huge ugly fungus growths all over the base of the plant. I do not know what this is or where it came from, I planted this garden 8 weeks ago and have had no problems. |
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12
748 |
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13
506 |
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14
337 |
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15
1525 |
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Unknown Fungus, Unknown Plant |
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16
3040 |
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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 |
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17
944 |
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18
572 |
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19
2731 |
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Red and White Tree Lichen Spots |
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20
1019 |
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21
1751 |
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Cedar Apple Rust - Gymnosporangium juniperi-virginianae |
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22
2460 |
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Maybe Plum leaf blister (Polystigma rubrum) - Red leaf spots |
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23
1094 |
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http://www.forestryimages.org/search/action.cfm?q=symptoms&a
mp;Start=1&results=4440 |
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24
503 |
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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 |
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25
945 |
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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 |
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26
2852 |
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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 |
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27
1916 |
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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 |
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28
3861 |
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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 |
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29
673 |
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30
9037 |
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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 |
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