Management of pea weevil

Page last updated: Wednesday, 29 July 2020 - 8:34am

The pea weevil (Bruchus pisorum) in fact is a beetle, not a weevil and should really be called the pea beetle. It is one of the most damaging pests of field peas. It not only reduces yields but can also reduce germination rates of seed and grain quality to the point that it's not saleable for human consumption.

Pea weevil management requires more than one method to break the lifecycle of this pest. This page provides information on how to manage and reduce the influence of pea weevil in crops and grain storages.

Description

Adults:

  • 5mm long
  • brown with white, black and grey patches
  • white tip of the abdomen is marked with two black, oval spots
  • are not true weevils so lack the typical snout.
Pea weevil adult is a beetle, note the lack of a weevil snout
Pea weevil adult is a beetle. Note the lack of a weevil snout

Eggs:

  • bright yellow and cigar shaped
  • about 1.5mm long
  • attached individually to developing pods.
Pea weevil egg, note its oval, yellow shape
Pea weevil egg. Note its oval, yellow shape

Larvae burrow directly into pods to feed on cotyledons and remain protected in the seed until the adult emerges. Once eggs are laid it is too late for field control.

The level of field pea damaged by pea weevil larvae at around early harvest
The level of field pea damaged by pea weevil larvae at around early harvest

Pages

Contact information

Darryl Hardie
+61 (0)8 9368 3799

Authors

Darryl Hardie
Svetlana Micic