Bean Common Mosaic Virus

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Bean Common Mosaic VirusBean Common Mosaic Virus

Foliar cupping and puckeringFoliar Cupping and Puckering

Distorted leaf growth and discolorationDistorted leaf growth and discoloration

Mosaic pattern from BCMVMosaic pattern from BCMV

HOSTS

  • Legumes

DESCRIPTION

Bean Common Mosaic Virus (BCMV) is one of two viruses that causes bean common mosaic disease. BCMV is primarily spread through aphid feeding and infected seeds. The seed transmission rate of BCMV by seeds is very high, which has led to BCMV being an issue for agriculturalists globally.  

BIOLOGY

Depending on the bean variety, BCMV can be found in the outer seed coat or inner seed tissue called the endosperm of infected beans. Plants grown from infected seeds will be stunted.  

For a short time after an aphid feeds on an infected plant, it will transmit the pathogen to other plants it probes.

SYMPTOMS

  • Stunted plant growth  
  • Distortion and puckering of leaves  
  • Mosaic pattern on foliage  
  • Reduced yield 

GENERAL MANAGEMENT

  • Plant certified disease-free seed 
  • Use bean varieties that are resistant to BCMV 

















Precautionary Statement: Utah State University and its employees are not responsible for the use, misuse, or damage caused by application or misapplication of products or information mentioned in this document. All pesticides are labeled with ingredients, instructions, and risks, and not all are registered for edible crops. “Restricted use” pesticides may only be applied by a licensed applicator. The pesticide applicator is legally responsible for proper use. USU makes no endorsement of the products listed in this publication.