Basics in Fort Bend
Bees
Beneficial Insects
Chrysanthemum
Common Mistakes
Fall Webworms
Fire Ants
Gingers
Lady Beetles
Landscaping Basics
Monthly Tasks
Pest Elimination
Plant Diseases
Propagation
Roses
Trees
Vegetables
Vermicompost
Xeriscape
Zinnias
Some book suggestions
|
|
Plant Diseases
- Blight - A general term used to describe the rapid and general killing of leaves, flowers or stems. Example: fire blight of pear.
- Canker - A dead area on a stem surrounded by living tissue. Example: the fire blight bacterium produces cankers on limbs.
- Chlorosis - Yellowing of normally green tissue due to partial failure of chlorophyll to develop.
- Damping-off - A disease of seedling plants that kills individual plants; usually caused by fungi.
- Dieback - Progressive death of branches shoots and roots beginning at the tips. Dieback may occur on roses after repeated defoliation by the black spot fungus.
- Gall - A pronounced localized swelling on roots, stems or branches. Root knot nematodes cause root galling on susceptible plants.
- Lesion - A localized spot of diseased tissue. Sunken lesions are caused by the bacterial spot organism on peach fruit.
- Mildew - Whitish or grayish coating of fungal strands and spores appearing on a leaf surface infected by the powdery mildew fungus or the downy mildew fungus.
- Mosiac - Alternate light and dark green areas occurring in leaves. Viruses such as tobacco mosaic cause mosaic patterns in leaves.
- Rot - Decayed or decaying tissue caused by microorganism activity.
- Stunting - Reduced plant size caused the action of pathogenic organisms.
|
