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Sp277-O-Root Rots And Seedling Disease Of Beans And Peas, The University Of Tennessee Agricultural Extension Service

Insects, Pests, Plant Diseases and Weeds

Root rots, seed rots and damping off (death of seedlings before or after emergence) are major diseases of snap beans, lima beans and Southern peas. Seed rots and damping off are collectively referred to as seedling disease. These diseases cause poor stands and reduced plant growth and yield. The fungi that cause seedling disease and root rots can be found in most soils, but the occurrence of these diseases is unpredictable. When conditions are favorable for vigorous plant growth, root rot fungi do little damage. These fungi can survive in the soil for long periods and can be moved with …

Sp277-Y-Blossom-End Rot, The University Of Tennessee Agricultural Extension Service

Insects, Pests, Plant Diseases and Weeds

Blossom-end rot is a common problem of peppers, tomatoes and watermelons. It is most often seen in home gardens, but has been quite a factor in droughty years in commercial plantings of these crops.

W018-Strawberry Diseases In Tennessee, The University Of Tennessee Agricultural Extension Service

Home Garden, Lawn, and Landscape

A number of diseases affect the fruit, leaves, roots and crowns of strawberries. This publication provides information on the most important strawberry diseases in Tennessee. Reference is made to two systems of strawberry production in Tennessee. The matted-row system is a perennial system in which the plants are allowed to spread, and the planting is maintained for several years. Plasticulture is a term often used to refer to an annual system of production in which planting takes place in plastic-mulched rows in the fall, and the plants are destroyed the following summer, after harvest is completed.

Cultural control practices are …

Sp277-I-Bacterial Spot Of Peach, The University Of Tennessee Agricultural Extension Service

Home Garden, Lawn, and Landscape

Bacterial spot, known also as bacteriosis, bacterial shothole, or shothole, is caused by the bacterium Xanthomonas campestris pv. pruni. Although primarily a peach and nectarine problem, this disease also occurs on apricots, plums and, to a lesser degree, cherries.

Losses due to bacterial spot occur from affected fruit and from the devitalization of trees caused by frequent defoliation. Such weakened trees are more subject to winter injury. Losses are greatest in light, low-fertility soils. Trees low in vigor are more susceptible to bacterial spot than vigorous trees.

Sp277-A-Cedar Apple Rust, The University Of Tennessee Agricultural Extension Service

Home Garden, Lawn, and Landscape

Cedar-apple rust is a common disease of apple and crabapple. The fungus that causes the disease, Gymnosporangium juniperi-virginianae, is unusual because it must spend a phase of its life cycle as a parasite on Juniperus species, such as red cedar or ornamental junipers.

Cedar-apple rust can be severe on apple. Infections of apple fruit result in lower fruit quality and early fruit drop. Leaf spots may cause early defoliation, especially during dry summers. If trees are defoliated several years in a row, they become weakened and unthrifty. Fruit bud formation may be reduced after one year. The disease is not …

W141-2010 Commercial Vegetable Disease Control Guide, The University Of Tennessee Agricultural Extension Service

Commercial Horticulture

The term plant disease, as used in this publication, refers to a plant problem caused by a pathogen, such as a fungus, bacterium, virus or nematode. Other types of plant problems include disorders, caused by cultural or environmental factors, and pest damage, caused by insects or other animals that feed on or otherwise damage plants. This publication only deals with pathogen control and does not address disorders and pest damage.