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Full-Text Articles in Life Sciences
Sp277-B-Phomopsis Blight In Juniper, The University Of Tennessee Agricultural Extension Service
Sp277-B-Phomopsis Blight In Juniper, The University Of Tennessee Agricultural Extension Service
Insects, Pests, Plant Diseases and Weeds
Junipers are very susceptible to a disease known as Phomopsis blight, juniper twig blight or juniper tip blight. This disease is most severe on juniper, red cedar and horticultural varieties of these plants. It also occurs on arborvitae (Thuja or Platycladus), cypress (Cupressus), Douglas fir (Pseudotsuga), fir (Abies), hemlock (Tsuga), larch (Larix), redwood (Sequoia), white cedar (Chamaecyparis) and yew (Taxus). Phomopsis blight can be a real problem in nurseries or where plants are growing close together.
Sp370-A-Impatiens Necrotic Spot Virus, The University Of Tennessee Agricultural Extension Service
Sp370-A-Impatiens Necrotic Spot Virus, The University Of Tennessee Agricultural Extension Service
Insects, Pests, Plant Diseases and Weeds
Impatiens necrotic spot virus (INSV) is quickly becoming one of the most important viral pathogens of floral crops in Tennessee and the United States. INSV has historically been a problem in Mexico, and the western and southwestern parts of the U.S. and Hawaii. During the mid-1980s, INSV has spread rapidly in the Gulf Coast states from Texas to Florida, and north into Tennessee and Kentucky. Although the reasons as to why the virus spread so rapidly are unknown, it may be related to the migration of the thrips from infested regions into new areas and movement of infected plant material …
Sp370-B-Powdery Mildew Of Ornamentals, The University Of Tennessee Agricultural Extension Service
Sp370-B-Powdery Mildew Of Ornamentals, The University Of Tennessee Agricultural Extension Service
Insects, Pests, Plant Diseases and Weeds
Powdery mildew occurs on many herbaceous and woody ornamentals in Tennessee. Mildew diseases may appear in greenhouses, nurseries or landscape settings. Woody ornamentals like Chinese photinia (Photinia serrulata), flowering dogwood (Cornus florida) crepe myrtle (Lagerstroemia indica), common lilac (Syringa vulgaris), Persian lilac (Syringa X persica), euonymus (Euonymus spp.), rose (Rosa spp.) and many crab apple cultivars are highly susceptible and may be seriously damaged by powdery mildew infections. Herbaceous ornamentals that are frequently infected with powdery mildew include pot plants such as African violet (Saintpaulia …
Sp277-D-Entomosporium Leaf Spot Of Photinia, The University Of Tennessee Agricultural Extension Service
Sp277-D-Entomosporium Leaf Spot Of Photinia, The University Of Tennessee Agricultural Extension Service
Insects, Pests, Plant Diseases and Weeds
Photinia, a broad leaf evergreen, is widely grown in nurseries in Tennessee. It is used extensively in landscape plantings, most often in border plantings. Photinia X fraseri is especially popular because of its bright red immature foliage. Leaf spot caused by the fungus Entomosporium maculatum continues to be a persistent and destructive disease of photinia and other species in the family Rosaceae in nurseries and landscape beds. This disease is most often reported on red-tip photinia (P. X fraseri).