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Virginia Tech Virginia Cooperative Extension Virginia State University
Plant Diagnostic and Identification Labs





Below is a list of the plants and pathogens in our database. If you are looking for something specific or just wish to narrow down the current plants and/or pathogens being displayed, use the drop down menus here to limit your results to a specific category or plant name.

Pathogen Type:
Plant Type:
Plant Name:
Plant Scientific Name:



Currently Ordering By: Plant Name


Plant Name Plant Scientific Name Disease Name Pathogen Scientific Name Pathogen Type

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Agastache Agastache sp. Downy Mildew
Peronospora lophanthi Oomycete

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Alfalfa Medicago sativa Anthracnose
Colletotrichum trifolii Fungus

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Alfalfa Medicago sativa Alfalfa Mosaic Virus
Virus

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Alfalfa Medicago sativa Violet Root Rot
Rhizoctonia crocorum Fungus

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Alfalfa Medicago sativa Sclerotinia Stem and Crown Rot
Sclerotinia trifoliorum Fungus

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Alfalfa Medicago sativa Sclerotinia Crown Rot
Sclerotinia trifoliorum Fungus

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Alfalfa Medicago sativa Common Leaf Spot
Pseudopeziza medicaginis Fungus

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Alfalfa Medicago sativa Rhizobium Nodules
Rhizobium meliloti Normal Condition

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Apple Malus sylvestris Black Rot
Physalospora obtusa Fungus

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Apple Malus sylvestris Blossom End Rot
Botrytis sp. Abiotic

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Apple Malus sylvestris Boron Deficiency
Abiotic

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Apple Malus sylvestris Cedar-Quince Rust
Gymnosporangium clavipes Fungus

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Apple Malus sylvestris Bitter Rot
Glomerella cingulata Fungus

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Apple Malus sylvestris Buckshot Wounds
Other

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Apple Malus sylvestris Armillaria Root Rot
Armillaria sp. Fungus

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Apple Malus sylvestris Fire Blight
Erwinia amylovora Bacterium

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Apple Malus sylvestris Burr Knot
Physiological/Genetic

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Apple Malus sylvestris Southern Blight
Sclerotium rolfsii Fungus

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Aralia Polyscias sp. Anthracnose
Gloeosporium sp. Fungus

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Arborvitae Thuja occidentalis Seasonal Needle Drop
Normal Condition Normal Condition

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Ash Fraxinus sp. Anthracnose
Discula sp. Fungus

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Asiatic Lily Lilium sp. Botrytis Blight
Botrytis elliptica Fungus

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Asparagus Asparagus officinalis Fasciation
Abiotic

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Azalea Rhododendron sp. Phytophthora Root Rot
Phytophthora cinnamoni Fungus

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Azalea Rhododendron sp. Leaf and Flower Gall
Exobasidium vaccinnii Fungus

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Azalea Rhododendron sp. Petal Blight
Ovulinia sp. Fungus

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Azalea Rhododendron sp. Foliar Nematodes
Aphelenchoides sp. Nematode

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Azalea Rhododendron sp. Phomopsis Dieback
Phomopsis sp. Fungus

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Azalea Rhododendron sp. Web Blight
Rhizoctonia sp. Fungus

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Azalea Rhododendron sp. Ovulinia Petal Blight
Ovulinia azaleae Fungus

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Barley Hordeum vulgare Deep Planting
Abiotic

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Barley Hordeum vulgare Net Blotch
Pyrenophora teres Fungus

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Barley Hordeum vulgare Leaf Rust
Puccinia hordei Fungus

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Barley Hordeum vulgaris Spot Blotch
Bipolaris sorokiniana Fungus

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Barley Hordeum vulgare Ascochyta Leaf Spot
Ascochyta hordei Fungus

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Basil Ocimum basilicum Downy Mildew
Plasmopara belbahrii Oomycete

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Bean Phaseolus vulgaris Rust
Uromyces appendiculatus Fungus

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Bean Phaseolus vulgaris Root Rot

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Bean Phaseolus lunatus Yeast Spot
Nematospora coryli Fungus

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Bean Phaseolus vulgaris Chemical Injury
Abiotic

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Bean Phaseolus vulgaris Anthracnose
Colletotrichum lindemuthianum Fungus

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Bean Phaseolus vulgaris Angular Leaf Spot
Phaeoisariopsis griseola Fungus

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Bean Phaseolus vulgaris Halo Blight
Pseudomonas syringae pv. phaseolicola Bacterium

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Bean Phaseolus vulgaris Rust
Uromyces appendiculatus Fungus

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Bean Phaseolus vulgaris Root Knot Nematode
Meloidogyne sp. Nematode

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Beech Fagus sp. Sooty Mold
Scorias spongiosa Fungus

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Beech Fagus grandifolia Beech Bark Disease
Nectria coccinea var. fagisuga Fungus

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Beet Beta vulgaris Cercospora Leaf Spot
Cercospora beticola Fungus

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Beet Beta vulgaris Root Knot Nematode
Meloidogyne arenaria Nematode

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Beet, Sugar Beta vulgaris Nutrient Deficiency
Abiotic

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