Cereals: Cereal Leaf Beetle (Oulema melanopus)

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Pub 812: Field Crop Protection Guide > Chapter 4: Cereals > Cereal Leaf Beetle

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Field Crop Protection Guide 2011-2012, Order 2011-2012 publication

Table of Contents

1. Description
2. Integrated Pest Management Options
• malathion – Malathion 500 EC
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.

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/stem. See OMAFRA Publication 811, Agronomy Guide for Field Crops, for more information.

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
PHI*	7
Comments	Product is less effective at temperatures below 20°C (68°F).

 

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Related links...

• Agronomy Guide for Field Crops - Publication 811
  • Cereal Leaf Beetle
• Insects
• Cereals