Browsing by Author "Couch, Houston B."
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- 1976 Virginia plant disease control guideCouch, Houston B.; Drake, Charles R.; Hickey, K. D.; Lambe, Robert C.; Osborne, W. Wyatt; Pristou, Robert; Skelly, John M.; Stipes, R. Jay; Baldwin, Robert E. (Virginia Cooperative Extension Service, 1976-01)Guide is intended to serve as a ready reference to disease control measures for extension agents, growers, custom spray applicators, processors, chemical company representatives, and dealers in Virginia
- 1988-89 pest management guide for turfgrassRobinson, William H.; Couch, Houston B.; Bingham, Samuel W. (Virginia Cooperative Extension Service, 1988-01)Control of insects and mite pests of turf grass is best achieved by considering the pests in above-ground and below-ground categories. For the latter, it is essential to get chemicals into the soil; for the former, the grass blades and ground surface should be treated so as to get a minimum of washoff and soil penetration by rain or watering. In general, emulsifiable concentrates provide the greatest residual on grass blades and the least immediate penetration into the soil. Wettable powders provide good residual, but dust and granular formulations move down into the thatch and soil. White grubs (masked chafer, May beetle, Japanese beetle, etc.) digger wasps, and ants are below-ground pests. Sod webwonns, annywonns, and chinch bugs inhabit the thatch near the soil surface, but feed on grass blades. Leaf/zappers, frit flies, billbugs, and mites move and feed on grass blades.
- Lawn diseases: fairy ringsCouch, Houston B. (Virginia Cooperative Extension Service, 1976-07)Fairy rings can be caused by growth of any one of 50 mushroom, toadstools, and puffballs. It can occur in any type of lawn.
- Lawn diseases: fusarium patch (pink snow mold)Couch, Houston B. (Virginia Cooperative Extension Service, 1976-07)Caused by the fungus Fusarium nivale, the disease occurs in bent grass, bluegrasses, Bermudagrass, fescues and ryegrasses
- Lawn diseases: helminthosporium blight (netblotch) of fescuesCouch, Houston B. (Virginia Cooperative Extension Service, 1976-07)Helminthosporium blight of lawns and its control
- Lawn diseases: helminthosporium leaf spotCouch, Houston B. (Virginia Cooperative Extension Service)Symptoms, disease process and control of helminthosporium leaf spot
- Lawn diseases: melting-out of Kentucky bluegrassCouch, Houston B. (Virginia Cooperative Extension Service)Symptoms, disease process and control of melting out of Kentucky bluegrass which is caused by helminthosporium vagans
- Lawn diseases: powdery mildewCouch, Houston B. (Virginia Cooperative Extension Service, 1976-07)Powdery mildew is caused by the fungus erysiphe graminis. This disease most commonly occurs in Bermudagrass, bluegrasses, and fescues
- Lawn diseases: pythium blight (cottony blight)Couch, Houston B. (Virginia Cooperative Extension Service, 1976-07)Caused by pythium ultimum and P. aphanidermatum, cottony blight can destroy stands in 24 hours
- Lawn diseases: red leaf spot of bentgrassesCouch, Houston B. (Virginia Cooperative Extension Service, 1976-07)Symptoms, disease cycle and control of red leaf spot of bentgrasses which is caused by helminthosporium erythrospilum
- Lawn diseases: slime moldsCouch, Houston B. (Virginia Cooperative Extension Service, 1976-01)Symptoms, disease cycle and control of slime molds
- Lawn diseases: stripe smutCouch, Houston B. (Virginia Cooperative Extension Service, 1976-07)Stipe smut is caused by ustilago striiformis and is found most commonly in bentgrasses, bluegrasses, tall and meadow fescue and ryegrass. Disease process, symptoms and control