Dry Beans

• Seedcorn maggot
• Symphylans
• Wireworms
• Pythium spp.
• Gophers

• Rhizoctonia solani
• Thielaviopsis basicola
• Pythium spp.
• Charcoal rot
• Seedcorn maggot
• Cowpea aphid

• Cucumber beetle
• Cowpea aphid
• Leafminer
• Thrips
• Darkling beetles
• Rabbits

• Cutworm
• Gophers
• Sunscald
• Herbicide damage

Seedcorn maggot damage
Identification tip: Seedling severely damaged before it emerges by seedcorn maggot chewing.

Symphylans
Identification tip: Slender, white arthropods, closely related to insects, about 1/3 inch, with 10 to 12 appendages and distinct antennae; may damage seedlings before or after emergence and may slow growth of larger plants.

Wireworms
Identification tip: A wireworm was found feeding inside the stunted dry bean seedling on the right.

Pythium spp. preemergence rot
Identification tip: Bean seeds rotting from Pythium rot infection.

Gophers
Identification tip: Crescent-shaped mound and plugged burrow opening of a pocket gopher, Thomomys sp.

Rhizoctonia solani infected seedlings
Identification tip: Infected bean seedlings (center) collapse.

Rhizoctonia solani infected seedling
Identification tip: Sharp-edged oval to elliptical reddish brown lesions on base of developing stem.

Thielaviopsis basicola infected seedling
Identification tip: Blackeye bean seedling collapse.

Pythium spp. infected seedling
Identification tip: Water soaked lesions on base of developing stem.

Charcoal Rot infected young plant
Identification tip: Infected roots brown to black.

Wireworms
Identification tip: Shiny, slender, cylindrical, yellow-to-brown, wirelike larvae (of click beetles) found in soil.

Cucumber beetle adult and damage
Identification tip: Adults chew holes in leaves, skeletonizing them.

Cowpea aphid damage
Identification tip: Feeding causes bean leaf curling. (Cowpea aphids in photo are rare color variant, they are usually shiny black.)

Leafminer larva and damage
Identification tip: Yellow larva (center) was removed from the inside of the leaf where it was feeding; it is blunt at rear, and pointed in front; feeding causes threadlike twisting lines in leaf.

Aphid damage
Identification tip: Feeding stunts plants.

Baldhead
Identification tip: Seedlings have little or no growth above the primary (first) leaves as a result of death or damage of the growing point

Darkling beetles
Identification tip: spotty infestations; young plants girdled or cut off at or below the soil surface.

Rabbits
Identification tip: Leaves and stem parts chewed off; rabbit droppings next to damaged plant.

Cutworm damage
Identification tip: Seedlings (right) clipped off just above soil line.

Gopher mound
Identification tip: Characteristic crescent-shaped mound and plugged burrow opening.

Wireworms
Identification tip: Shiny, slender, cylindrical, yellow-to-brown, wirelike larvae (of click beetles) found in soil.

Sunscald
Identification tip: Dry brown patches on leaves.

Herbicide damage
Identification tip: Kidney bean seedling (left) with chlorotic and cupped leaves caused by oxyfluorfen herbicide.