A biological strategy to control obliquebanded leafroller in orchards where a codling moth mating disruption program is underway

Daniel Cormier, researcher

Daniel Cormier

Researcher, Ph.D.

450 653-7368
ext 360

Contact Daniel Cormier
Gérald Chouinard, researcher

Gérald Chouinard

Researcher, agr., Ph.D.

450 653-7368
ext 340

Contact Gérald Chouinard

Description

To maintain and enhance environmental and health gains, this project will develop a strategy for biological control of the obliquebanded leafroller in orchards where mating disruption is being used against the codling moth.

The initial phase of the project will involve fine-tuning applications of the parasitoid Trichogramma minutum so that releases to control OBLR are uniform and cost effective.

In the second phase we will assess the obliquebanded leafroller populations in a number of Québec orchards.

In the third phase we will compare three strategies for controlling the obliquebanded leafroller that combine crop practices, a Bacillus thuringiensis var. kustaki (Bt) insecticide, and the inundative release of Trichogramma minutum into commercial orchards already using mating disruption against the codling moth.

Objective(s)

  • Adjust the parasitoid (Trichogramma minutum) application method used in inundative releases to control the obliquebanded leafroller.
  • Compare three strategies for controlling the obliquebanded leafroller that combine crop practices, a Bacillus thuringiensis var. kustaki insecticide, and the inundative release of Trichogramma minutum in commercial orchards using mating disruption against the codling moth.

From 2019 to 2022

Project duration

Fruit production

Activity areas

Pest, weed, and disease control, Organic farming

Services

Compared with insecticide applications, this method reduces the risks to human health and the environment.

Partners

Ministère de l'Agriculture, des Pêcheries et de l'Alimentation du Québec | Agro-Pomme

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