PPFS-GH-8: Managing Tobamoviruses in Greenhouse Production

Nicole 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-GH-4: Greenhouse Sanitation

Nicole 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-GH-3: Fungicides for Management of Diseases in Commercial Greenhouse Ornamentals

Nicole Gauthier | Mar. 25, 2021 (Minor Revision)

This guide is a decision-making tool to help growers select fungicides from different chemical classes (FRAC). Additional information can be found in a number of UK Cooperative Extension Service publications or by contacting county Extension agents.

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PPFS-GH-7: Cleaning and Sanitizing Commercial Greenhouse Surfaces

Samantha Anderson, Nicole Gauthier, Josh Knight, W. Owen | Aug. 3, 2020 (New)

Greenhouse and nursery sanitation practices help prevent the introduction and spread of plant diseases and pests, as well as eliminate safety hazards. In general, being proactive in maintaining a clean growing environment will often be less expensive and more effective than reacting to a disease or pest issue after it emerges.

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PPFS-GH-1: Managing Greenhouse and High Tunnel Environments to Reduce Plant Diseases

Philip Konopka, Emily Pfeufer, Nicole Gauthier | Mar. 1, 2016 (New)

Greenhouse and high tunnel environments, which tend to be warm and humid, often create ideal situations for disease development. Environments favoring infection and spread of many disease pathogens include one or more of the following: high relative humidity (90% or above), free moisture (e.g., leaf wetness, wet soil), and/or warm temperature. Because diseases can cause extensive damage, their management is essential to production of high quality, marketable products. While challenging, these environments can be managed to simultaneously encourage plant growth and discourage pathogen spread.