Integrated Pest Management Pest Information Platform for Extension and Education: The Legumes

Common Bean

Rust Diseases

Soybean rust (Phakopsora pachyrhizi)

Lower leaf surface

Upper leaf surface

Common rust (Uromyces appendiculatus)

Disease life cycle

Uredinia on the upper surface of a bean leaf

Uredinia on a bean pod

Uredia on the underside of bean leaflets

Germinating tubes of rust spores

Close-up view of aecia on the stem of a dry bean plant

Field of dry bean plants defoliated due to infection

Telia on the stem of a bean plant.

Other Fungal Diseases

White mold (Sclerotinia sclerotiorum)

Advanced symptoms in the canopy of bean plants in the field.

ascus and ascospores

Fallen blossoms of dry bean that have been colonized

Symptoms on the stem and branches of a dry bean plant

sclerotia on potato dextrose agar in the laboratory

Anthracnose (Colletotrichum lindemuthianum)

Angular leaf spot (Phaeoisariopsis griseola)

Bacterial diseases

halo blight (Pseudomonas syringae pv. phaseolicola)

Common bacterial blight (Xanthomonas campestris pv. phaseoli)

Bacterial brown spot (Pseudomonas syringae pv. syringae)

Bacterial wilt (Curtobacterium flaccumfaciens pv. flaccumfaciens)

Virus diseases

Alfalfa Mosaic Virus (AMV)

We currently do not have any images of Alfalfa Mosaic Virus affecting common bean. If you have some images you wish to contribute, please contact our staff

Bean Common Mosaic Virus (BCMV)

Bean Yellow Mosaic Virus (BYMV)

We currently do not have any images of Bean Yellow Mosaic Virus affecting common bean. If you have some images you wish to contribute, please contact our staff

Beet Curly Top Virus (BCTV)

Cucumber Mosaic Virus (CMV)

We currently do not have any images of Cucumber Mosaic Virus affecting common bean. If you have some images you wish to contribute, please contact our staff

Insect pests and vectors

Bean aphid (Aphis fabae)

Potato leafhopper (Empoasca fabae)

Mexican bean beetle (Epilachna varivestis)

Thrips tabaci, Franklinella occidentalis and others

Scarring of a bean leaf caused by Thrips tabaci

western flower thrips (Frankliniella occidentalis)

Adults of Thrips tabaci (left) and Frankliniella occidentalis (right)

Adults of Thrips tabaci (left) and Frankliniella occidentalis (right)

Cool season legumes

Other Fungal Diseases

Ascochyta Blight of Chickpea (Ascochyta rabiei)