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Cereals: Cereal Leaf Beetle (Oulema melanopus)

Author: OMAFRA Staff
Creation Date: 04 July 2005
Last Reviewed: 28 July 2007
Pub 812: Field Crop Protection Guide > Chapter 5: Cereals > Cereal Leaf Beetle

Excerpt from Chapter 5, Field Crop Protection Guide, Order this publication

Table of Contents

  1. Description
  2. Integrated Pest Management Options
  3. Related links...

Description

The cereal leaf beetle (CLB) adult is a metallic, blue-green beetle, approximately 0.5 cm in length, with a reddish-orange head and legs. The larvae are 0.6 cm in length when mature and yellowish in colour, but this colour is obscured by a black deposit of fecal material making it slug-like in appearance.

Plate 106. Cereal leaf beetle larvae are yellowish, but this colour is obscured by a black deposit of fecal material making it slug-like in appearance.

Cereal leaf beetle larvae are yellowish, but this colour is obscured by a black deposit of fecal material making it slug-like in appearance.

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Integrated Pest Management Options

Natural enemies are highly effective at controlling this pest. For the safety of these natural enemies, chemical control is not recommended unless pest population exceeds the action threshold of 1 larvae per stem. See OMAFRA Publication 811, Agronomy Guide for Field Crops, for more information.

malathion – Malathion 500 EC
Active ingredient malathion
Trade name Malathion 500 EC
Rate per hectare (product) 2.2 L per ha
Rate per acre (product) 880 mL per ac

Comments
7 days to harvest. Less effective below 20°C (68°F)

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Related links...

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