The complementarity of commercially available predators in controlling spotted wing drosophila in organic day-neutral strawberry crops

Annabelle Firlej, researcher

Annabelle Firlej

Researcher

450 653-7368
ext 363

Contact Annabelle Firlej

Description

The spotted wing drosophila (SWD) is a particularly challenging pest for berry growers due to its high egg-laying potential and end-of-season population explosion (near harvest time). Insecticides have limited ability to reach the larvae, which are buried inside the fruit. In Québec, the battle against SWD generally involves repeated and alternating applications of insecticides that are also toxic to pollinators and, in some cases, pose significant risks to human health and the environment. In organic crops it is possible to utilize up to three treatments of Entrust, but there is a risk of resistance developing. To reduce the phytosanitary impact of drosophila in berry crops, IRDA proposes to assess the complementarity of commercial predators. The three selected predators (Orius insidiosius, Chrysoperla carnea and Dicyphus hesperus) have demonstrated their effectiveness in eating spotted wing drosophila eggs in laboratory studies. Three treatments involving the release of predators in combination will be compared to a control group in a randomized complete block design tested in an organic day-neutral strawberry crop. Fruit infestations and saleable fruit percentages will be assessed and compared for each treatment.

Objective(s)

  • Develop a control method that involves the release of commercially available predators to control spotted wing drosophila in organic day-neutral strawberry crops

From 2020 to 2022

Project duration

Fruit production

Activity areas

Pest, weed, and disease control, Organic farming

Services

This project will allow us to learn more about the effectiveness of various predator combinations in controlling spotted wing drosophilia.

Partner

Ministère de l'Agriculture, des Pêcheries et de l'Alimentation du Québec

This may interest you

Cranberries
2016-2018 • Fruit production

Adapting fruit crop pest and disease control to climate change

The goal of this project was to document the impact of climate change on fruit crop pests and diseases in Québec.

Researcher: Annabelle Firlej

Read more about the project

Annabelle Firlej
Apples
2019-2020 • Fruit production

Using carbohydrate-balance bioclimatic modelling to develop carbaryl-free apple fruit thinning strategies

The model’s predictions will be used to calibrate the dose of a thinning agent (ANA) to be applied in two plots, one treated with carbaryl and the other without, over a two-year period.

Researcher: Vincent Philion

Read more about the project

Vincent Philion
Strawberries
2015-2017 • Fruit production

Effects of various irrigation strategies on nutrient uptake in organically grown June-bearing strawberries grown in beds covered with black plastic mulch

The project was conducted at IRDA’S Organic Agriculture Innovation Platform. Strawberries (Cleary cultivar) were produced in beds covered with black plastic mulch.

Researcher: Carl Boivin

Read more about the project

Carl Boivin