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

Daniel Cormier, researcher

Daniel Cormier

Researcher

450 653-7368
ext 360

Contact Daniel Cormier
Gérald Chouinard, researcher

Gérald Chouinard

Researcher

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

This may interest you

Raspberries, blueberries dans strawberries
2018-2019 • Fruit production

Incorporating integrated fruit production data for strawberries, raspberries, and highbush blueberries into the SAgE Pesticides web tool

This project looks to incorporate the data for the recommended IFP berry products into the SAgE Pesticides database. The goal is to encourage farmers to adopt IFP and make it easier for them to access IFP data.

Researcher: Annabelle Firlej

Read more about the project

Annabelle Firlej
Arthropod
2017-2018 • Fruit production

Arthropod resistance to pesticides: literature review of resistant pests and resistance tests

IRDA drew up a list of insects and mites in Québec known to be or likely to become resistant to pesticides.

Read more about the project

Daniel Cormier
Annabelle Firlej
Apples
2019-2020 • Fruit production

Using multitask nets and mechanization to eliminate pesticide use in apple orchards

Exclusion nets have proven to be effective against nearly all of these insect pests, which means that it’s possible to develop apple growing practices in Québec that are not only neonicotinoid free, but also devoid of all pesticides (including acaricides, given that mite problems are a consequence of broad-spectrum insecticide use). Although the net exclusion microsystem studied in Québec since 2012 has demonstrated its effectiveness in controlling insect pests, some issues remain to be studied before it can be unreservedly recommended. Among these are the handling times for the nets, i.e., installation/removal and opening/closing, and the system’s profitability and durability over the long haul for various cultivars.

Researcher: Gérald Chouinard

Read more about the project

Gérald Chouinard