General Pests: Harvest / Dry Beans / Agriculture: Pest Management Guidelines / UC Statewide IPM Program (UC IPM)

Monitor pod and seed damage at harvest to identify pests that escaped your management program. Look for the presence or any evidence of armyworms, stink bugs, lygus bugs, and diseases. Keep a record of problems that you observe. Knowledge of the current year's problems will help you plan for next year’s practices.

Use the photos below to distinguish symptoms due to various diseases, insects, or abiotic factors. Names link to more on identification and management or biology.

Click on photos to enlarge
Armyworm and corn earworm larvae and damage Identification tip: Larvae chew holes in pods and beans.	Armyworm damage Identification tip: Chew holes in pods and beans.	Bean anthracnose damage Identification tip: Sunken cankers on pods.
Lygus bug damage Identification tip: Pitting and distortions on red beans.	Lygus bug damage Identification tip: Blemishes and stunted seeds.	Weevil damage Identification tip: Chew holes in stored beans.
Nightshade berry staining Identification tip: Nightshade berry juice stains bean seeds and causes debris to stick.	Common bacterial blight damage Identification tip: Pods with dark irregular spots.	White mold Identification tip: Bleached or tan colored pods.
Halo blight damage Identification tip: Sunken spots on pods.

Text Updated: 06/16