Contact Us   |   Your Cart   |   Sign In
Search

  

 

 

PLNA e-News: Plants, Pests & Diseases

Allium Leaf Miner Discovered in Lancaster

Tuesday, March 29, 2016   (0 Comments)
Posted by: Gregg Robertson
Share |

Allium leaf miner pupaLANCASTER - The Allium leafminer (ALM) has been discovered in onion crops on an organic farm in Lancaster County. This is the first discovery of the ALM, an invasive species from Europe and Asia Minor, in the United States.

The ALM can cause 100% crop loss in Allium species (onions, leeks) in heavy infestations. The ALM will also attack ornamental species of Allium.

Look for signs of feeding trails down the stems to the bulb. Pupae can be found during the summer and winter. Will affect multiple layers of the plant and may have multiple larva/pupae per leaf.

The mature fly is 2.5-3.5 mm long with a dark, mat colored body. Head has extensive yellow markings and small red eyes.

Allium leaf miner adult

 

For more information or to report possible populations of Allium leafminer visit PA Department of Ag website or contact your local Penn State Extension Office.

 


Sign In
Sign In securely
Calendar

12/2/2017
Pruning for Homeowners: Section A

12/4/2017
Professional Pest Manager's School

12/12/2017
Webinar: Invasive Plant Control Without Chemicals

12/13/2017
Webinar: The World is Your Oyster - Jeffrey Scott

12/15/2017
Webinar: The Enemy of My Enemy is My Friend – Using Biological Products to Fight Diseases and Pests

Sign Up for PLNA e-News