Plants

Plantas

Diseases

Enfermedades

The physical health of plants for food production, including the presence, risk and control of diseases. [AGROVOC]

Plant Health

Plant Disease

Enfermedades de plantas

Greasy Spot Disease

Mancha grasienta de los cítricos

The typical rainy and humid weather of Florida summers creates a perfect environment for the proliferation of a variety of fungal diseases. In particular, Cercospora is a genus of fungus of which there are over 1,200 different species. Because there are so many species of this fungus, many different plant species are affected including many garden vegetables and ornamentals.--- "<a href="http://leon.ifas.ufl.edu/newsletters/2013/08/19/cercospora-a-summer-fungal-disease-problem/">Cercospora: A Summer Fungal Disease Problem</a>", Gardening in the Panhandle (8/19/2013)

Cercospora leaf spot

This devastating disease has spread rapidly along the southeastern seaboard of the U.S. since 2003 and has begun to affect commercial avocado production in Florida. Laurel wilt is spread by ambrosia beetles and interconnected roots of avocado trees. The time from infection to tree mortality ranges from four to eight weeks. To prevent spread of the disease, it is important that trees be destroyed as soon as they are affected by the disease.

Esta devastadora enfermedad se ha extendido r&aacute;pidamente a lo largo de la costa sureste de Estados Unidos desde 2003 y ha comenzado a afectar la producci&oacute;n comercial de aguacate en Florida. El marchitamiento del laurel se transmite por los escarabajos ambros&iacute;acos y las ra&iacute;ces interconectadas de los &aacute;rboles de aguacate. El tiempo desde la infecci&oacute;n hasta la mortalidad de los &aacute;rboles oscila entre cuatro y ocho semanas. Para evitar la propagaci&oacute;n de la enfermedad, es importante destruir los &aacute;rboles tan pronto como se vean afectados por la enfermedad.

Redbay Ambrosia Beetle-Laurel Wilt Disease (RAB-LW)

Marchitez del laurel y escarabajo ambrosía 

Dollar spot (Sclerotinia homoeocarpa, F.T. Benn) is a fungal disease that affects turfgrasses in Florida. It starts by causing tan-colored lesions on individual leaf blades. As the disease progresses, it creates round, straw-colored patches in the grass that start out the size of silver dollars, but can spread up to six inches or more in diameter. --"Dollar Spot", Gardening in a Minute

Dollar Spot

Plant ID and Diagnostics

Diagnóstico e identificación de plantas

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(Pictures were plant samples submitted to the Plant Clinic at UF TREC) source: Qingchun Liu https://blogs.ifas.ufl.edu/miamidadeco/2025/01/17/what-to-consider-when-submitting-a-plant-sample-to-the-plant-clinic-for-diagnosis/

Gray Leaf Spot

Mancha gris de la hoja/Mancha foliar por Cercospora.

Citrus Diseases

Enfermedades de los cítricos 

Vectors and Vector-borne Plant Diseases

Bacterial Diseases of Plants

Avocado sunblotch is a systemic disease caused by the avocado sunblotch viroid (ASBVd). Recently, the number of avocado sunblotch viroid (ASBVd) infected trees in the Miami-Dade County production area appears to have increased. ASBVd is of major concern in all avocado producing countries due to the negative effect this viroid has on fruit production and fruit quality.&nbsp;
Find information on this emerging issue on the UF/IFAS Tropical Reearch and Education&nbsp;<a href="https://trec.ifas.ufl.edu/people/romina-gazis/avocado-sunblotch-viroid/">Avocado Sunblotch Viroid site </a>

Avocado Sunblotch Viroid (ASBVd)

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The department is recognized as a national and international leader in many areas of plant pathology. The research programs focus on diseases caused by fastidious microorganisms, bacteria, fungi, and whitefly- and aphid-transmitted viruses. We are known for our research on diseases of diverse crops including citrus; vegetables such as tomato, pepper and cucurbits; ornamentals including foliage plants and flowering and woody ornamentals; field crops including soybean, peanut and sugarcane; and tropical fruits. Our strengths also include expertise in epidemiology, molecular biology of host-parasite interactions, biological control, and post-harvest diseases. Our faculty has also been very active in international programs as evidenced by the many collaborative efforts in Florida and outside the U.S. --- About Plant Pathology, <a href="https://plantpath.ifas.ufl.edu/about-us/">https://plantpath.ifas.ufl.edu/about-us/</a>

Plant Pathology

Plant Pathology Department

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