PPFS-VG-27: Cucurbit Downy Mildew in Kentucky

Nicole Ward Gauthier, Kimberly Leonberger, Rachel Rudolph | Sep. 7, 2021 (New)

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PPFS-VG-17: Bacterial Spot of Pepper and Tomato

Erica Fealko, Nicole Ward Gauthier | Sep. 2, 2021 (Major Revision)

Bacterial spot can result in severe damage to tomato, sweet pepper, and pimento crops. The bacterium attacks leaves, fruits, and stems causing blemishes on these plant parts. Outbreaks of leaf spotting have resulted in leaf drop and poor fruit set in the field. Defoliation due to leaf spotting can increase the incidence of sun scald on fruit. Fruit infections result in badly spotted fruit, which are of little market value. In addition, fruit injury from this disease allows entry of secondary fruit rotting organisms, causing further damage.

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PPFS-VG-26: Early Blight and Septoria Leaf Spot: Disease Management for Residential Growers

Erica Fealko, Nicole Ward Gauthier, Heather Graham | Aug. 12, 2021 (New)

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PPFS-OR-H-11: Common Problems of Annuals and Perennials: An Index

Ellen Crocker, Jamie Dockery, Nicole Ward Gauthier, Jonathan Larson, Kimberly Leonberger | Aug. 2, 2021 (New)

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PPFS-OR-W-30: Common Problems of Common Trees: An Index

Ellen Crocker, Jamie Dockery, Nicole Ward Gauthier, Jonathan Larson, Kimberly Leonberger | Jul. 19, 2021 (New)

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PPFS-OR-W-31: Common Problems of Common Shrubs: An Index

Ellen Crocker, Jamie Dockery, Nicole Ward Gauthier, Jonathan Larson, Kimberly Leonberger | Jul. 19, 2021 (New)

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PPFS-GH-8: Managing Tobamoviruses in Greenhouse Production

Nicole Ward Gauthier | May. 13, 2021 (Minor Revision)

Tobamoviruses, including tobacco mosaic virus (TMV) and the new tomato brown rugose fruit virus (ToBRFV), can be persistent in greenhouses and other protected cropping environments. Herbaceous ornamentals, vegetables, and tobacco can be affected by tobamoviruses. Once introduced into a site, these viruses can spread rapidly, reducing plant quality and yields. Prevention and careful sanitation are important to maintaining a virus-free production environment for current and future crops.

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PPFS-GEN-18: Edema

Nicole Ward Gauthier, John Hartman | May. 10, 2021 (Major Revision)

Edema is a non-parasitic disorder which, under the right environmental conditions, can affect a wide variety of herbaceous plants. We most frequently observe this problem on indoor plants, such as dracaena, geranium and schefflera. Edema tends to be more of a problem in greenhouses, but it may also occur on plants grown in homes and offices. Field and garden grown crops, such as cabbage, may also be affected.

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PPFS-GH-4: Greenhouse Sanitation

Nicole Ward Gauthier, Kenny Seebold | May. 6, 2021 (Minor Revision)

Diseases are a major concern for greenhouse growers and can be a key limitation to profitable plant production. Disease management in greenhouses is critical because the warm, humid environment in these structures provides optimal conditions for reproduction of many pathogens. When disease management is neglected, pathogen populations build-up and continue to increase as long as there is susceptible plant tissue available for infection and disease development. Infected plant tissue, infested soil, and pathogen inoculum (such as spores, bacterial cells, virus particles, nematode eggs) all serve as sources of pathogens that can later infect healthy plants.

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PPFS-VG-11: Bacterial Wilt of Cucurbits

Ric Bessin, Nicole Ward Gauthier | Apr. 13, 2021 (Major Revision)

Bacterial wilt is a common, often destructive, disease of cucurbits. This disease can cause nearly complete losses of a planting before the first harvest. Bacterial wilt primarily affects cucumber and muskmelon (cantaloupe). While squash and pumpkin are also susceptible, the damage to these hosts is usually less severe.