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

9/23/2017
Building Beautiful Perennial Borders: Sec. A

9/23/2017
Tree Tenders Training

9/25/2017
"The IPM Toolbox" Webinar: Learn About BMSB and the Latest IPM Techniques

9/25/2017
Webinar: The Liberated Landscape: Letting Nature Do the Work

9/26/2017
Disease Management - GPN Plant Health Management Webinars

Sign Up for PLNA e-News