root surface host:plantpathology.tamu.edu

Listing 1 - 10 from 34 for root surface

CACTI AND SUCCULENTS
... attack by the cotton root rot fungus. Infected plants die. When pulled from the soil the brown strands of the fungus can be found growing on the root surface. No control practice is available. For additional information, see the section on Cotton Root Rot. Soft Rot (bacterium - Erwinia carotovora): The bacterium ...
plantpathology.tamu.edu

Cotton Root Rot
... from the soil with little effort. Root bark is decayed and brownish, and bronze colored wooly strands of the fungus are frequently apparent on the root surface. The fungus generally invades new ... fungus produces root-like (rhizomorph) strands that grow through the soil until coming in contact with growing plant roots. Strands grow on roots toward the soil surface. Immediately below the soil surface ...
plantpathology.tamu.edu

Multicrop Problems
... them. Some remain active within the zone of the root influence while others are more active on the root surface. Others invade the root directly or through wounds and move into the cortical tissues ... soil may be attacked. Third, young seedlings may be damaged at or near the soil surface following emergence, causing them to fall over. Control: Overwatering tends to encourage damping-off; only ...
plantpathology.tamu.edu

Multicrop Problems 2
... from the soil with little effort. Root bark is decayed and brownish, and bronze colored wooly strands of the fungus are frequently apparent on the root surface. The fungus generally invades new ... fungus produces root-like (rhizomorph) strands that grow through the soil until coming in contact with growing plant roots. Strands grow on roots toward the soil surface. Immediately below the soil surface ...
plantpathology.tamu.edu

Vegetable Crops Pt1
... cabbage and related plants. A white, powdery growth is observed on the upper surface of leaves. Protective fungicides can be applied if plants become severely infected. ... Root Knot).) Southern Blight: (See Southern Blight.) CANTALOUPE, CUCUMBER, SQUASH PUMPKIN AND CRENSHAW Cucumis and Cucurbita spp. Downy Mildew (fungus - Pseudoperonospora cubensis): Angular yellow spots appear on the upper surface ...
plantpathology.tamu.edu

Vegetable Crops pt 2
... day intervals will control the disease. Root Knot Nematode (nematode - Meloidogyne spp.): Root-knot nematodes seriously damage carrots and cause multiple tap-root formation. Root production is severely limited rendering the ... corn or sweet corn. Although high populations of spores are produced on the leaf surface, they are short lived and require extended periods of high humidity for infection. ...
plantpathology.tamu.edu

Vegetable Crops - pt 3
... These spots later enlarge and eventually encircle the leaf. Later, darkened zones appear on the surface of the leaves, retaining the characteristic purple color. Bulbs can be infected during harvest, ... seldom found in Texas as the season progresses into warmer weather. Pink Root (fungus - Pyrenochaeta terrestris): Pink root is strictly a soilborne disease. Diseased roots turn pink in color, shrivel ...
plantpathology.tamu.edu

Vegetable Crops - pt 4
... seed from northern states. Discard tubers with dark eyes or with sticky ooze on surface. Ring Rot (bacterium - Corynebacterium sepedonicum): Resembles brown rot, but stem is not discolored. ... causes may be drouth, or any factor interfering with normal root functions. Cotton Root Rot (fungus - Phymatotrichum omnivorum): See Cotton Root Rot. Curly Top (virus): See Curly Top. Southern Blight (fungus ...
plantpathology.tamu.edu

Mushroom Root Rot
... on the main stem and larger roots just beneath the soil surface. When the dead bark is peeled back, the white growth of the fungus over the surface of the wood constitutes a distinguishing character of this disease. The ... roots as possible before replanting. In addition, soil around the old root system should be fumigated or replaced with fresh soil. The objectives ...
plantpathology.tamu.edu

Daucus carota var. mativue Disease Descriptions - Cotton Root Rot
... carota var. mativue Disease Descriptions - Cotton Root Rot Cotton Root Rot Symptoms on Carrot Cotton Root Rot (fungus - Phymatotrichopsis omnivora): Carrots are usually grown during cooler times of the year when ... removed, infection cushions and mycelial strands of the fungus can be seen on the surface of the carrot [Photo #14]. A microscopic examination for the the characteristic cruciform hyphal ...
plantpathology.tamu.edu