Cereals: European Chafer
Pub 812: Field Crop Protection
> European Chafer (White Grub)
Field Crop Protection Guide 2011-2012, Order
Table of Contents
- Integrated Pest Management Option
- Related links...
European chafer larvae are white and C-shaped with an orange-brown
head and dark posterior. This pest can be distinguished from other
white grubs by its Y-shaped pattern of anal bristles known as "rasters,"
located on the underside of the last abdominal segment of the larva.
The adult is a medium-sized, light-brown, fawn-coloured, oval scarab
beetle, closely resembling the native June beetle.
Image 1. European chafer larvae are white with
an orange-brown head and dark posterior. They are distinguished
from other white grubs by the Y-pattern of the anal bristles (rasters).
Integrated Pest Management Options
High-risk areas for chafer withing a field include sandy knolls
and areas bordering turf, pasture and tree lines. Chafer grubs infestations
can occur one year after soybean crops on sandy soils. Avoid planting
winter wheat if chafer grub populations are extreme (more than 4
grubs per 30 cm x 30 cm (square foot)). See OMAFRA Publication 811,
Agronomy Guide for Field Crops, for more details.
| Active ingredient
| Trade name
||Cruiser 5 FS
| Rate (product)
||50 mL per 100 kg seed
||For use in wheat and barley. For use in commercial seed
treatment facilities only. Do not graze or feed livestock
on treated areas for 45 days after planting.