dead spots

Listing 1 - 10 from 254 for dead spots

Anyone familiar with Helictotrichon sempervirens? - Ornamental Grasses Forum - GardenWeb
... have one big clump about 5 years old that has not yet required dividing (no dead spots in the centre). In my yard they bloom in the third year after planting. They ...
forums.gardenweb.com

Iron Chlorosis of Trees and Shrubs
... margins of the leaves can then turn brown and become dry and brittle. Necrotic or dead spots may appear on the leaves too. If the irrigation water contains high levels of bicarbonate ...
gardenline.usask.ca

Armillaria Root Rots
... was said to be the breakdown of dead heartwood. How could you have a disease of dead matter? The heartrot concept that followed ... still have many wounds. As roots squeeze against each other, dead spots and cracks may form. As roots squeeze against rocks, the ... for microorganisms, such as those in the genus Phytophthora. The dead spots could also be opening for other organisms. The broken mycorrhiza ...
home.ccil.org

Early Blight of Potato and Tomato, HYG-3101-95
... both potato and tomato. It causes leaf spots and tuber blight on potato, and leaf spots, fruit rot and stem lesions on tomato ... , dark brown to black, dead spots ranging in size from a pinpoint to 1/2 inch in diameter. As the spots enlarge, concentric rings ... fruits, early blight causes dark, leathery sunken spots, usually at the point of stem attachment. These spots may enlarge to involve the entire ...
ohioline.osu.edu

Bacterial Spot, Speck, and Canker of Tomatoes, HYG-3120-96
... coalesce to form large, irregular dead spots. In mature plants, leaflet infection is most concentrated on fully-expanded and older leaves and some defoliation may occur. Spots may also appear on seedling stems ... differentiated by symptoms on immature fruits. Bacterial spot lesions (Figure 1) are small water-soaked spots that become slightly raised and enlarged until they are about 1/4 inch in ...
ohioline.osu.edu More from this site

Vegetable Crops - pt 4
... and fruit. Small, yellowish green to brown spots develop on the leaves. Under favorable weather conditions, spots become numerous and sometimes coalesce into large spots. Infected leaves turn yellow and fall off. ... (virus - Tomato Spotted Wilt Virus): This virus is vectored by thrips insects. Early symptoms are dead spots on upper leaves and death of the upper plant parts. Early leaf symptoms may ...
plantpathology.tamu.edu

Vegetable Crops - pt 6
... one-sided effect as does Fusarium wilt. Leaves from Verticillium infected plants sometimes show brown dead spots that may be confused with those caused by other fungi. However, they are lighter ... Leaves show a light-green mottling, accompanied by the development of numerous small, grayish-brown, dead spots which have a thick, paper appearance. Numerous narrow, dark brown streaks develop on the stem ...
plantpathology.tamu.edu More from this site

On-Line Glossary: A
... that are normally green; often a symptom of plant disease appearing in the nearly dead margins around completely dead spots in green leaves. (20) anthracnose. Any of various plant diseases, particularly those caused ...
ppathw3.cals.cornell.edu

Orchids, orchid growing information, orchid care and orchid pictures - Bribie Island Orchid Society
... ) from treated wood as a cause of loss of Bromeliads. The initial symptoms are irregular dead spots on the leaves followed by major loss of leaf area & death of the plant. Loss ...
www.bribieislandorchidsociety.com

Iron Chlorosis of Trees and Shrubs
... start to turn brown and become dry and brittle. Severe cases will result in necrotic (dead) spots on the chlorotic leaves. In other situations, where soil or irrigation water is high in ...
gardenline.usask.ca

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