Release of trichogramma wasps by drone, a new approach to the control of the European corn borer in processing sweet corn

Description

Part 1: Impact assessment of the duration of exposure to environmental conditions and predation of two cohorts of trichogramma released in bulk

Part 2: Evaluating two bulk trichogramma releases by drone
Four replicates of the three treatments in a randomized complete block design were established on 0.2 ha plots at least 150 m apart.

Part 3: On four farms, two of which are organic, the most effective release strategy based on the results of Part 2 were compared with an untreated control. Four replicates of the three treatments in a randomized complete block design were established on 3 ha plots (0.5 ha plots for the controls) at least 150 m apart. The following parameters were measured: trichogramma quality, number of male corn borers captured in the traps, number and GPS coordinates of corn borer eggs and sentinel eggs on the plants, trichogramma parasitism and emergence rates, and crop damage.

Part 4: Economic analysis comparing control strategies (insecticides, Trico cards, and trichogramma releases by drone)

Objective(s)

  • Evaluate the potential of using drones to optimize trichogramma releases against the European corn borer on processing sweet corn in Québec
  • Test the efficacy and cost-effectiveness of bulk aerial releases of trichogramma to bring European corn borer damage below acceptable thresholds for the food processing industry
  • Promote the use of biological control of the European corn borer by developing a trichogramma release strategy that eliminates the costly and time-consuming job of installing the Tricho cards

From 2016 to 2018

Project duration

Market gardening

Activity areas

Pest, weed, and disease control

Service

This project will encourage growers to adopt biological control methods to deal with the corn borer and, in doing so, lead to reduced pesticide use.

Partner

Ministère de l'Agriculture, des Pêcheries et de l'Alimentation du Québec - Programme de développement sectoriel

This may interest you

Potato plant flower
2019-2022 • Market gardening

Developing a web app to facilitate the viewing and interpretation of potato soil health analyses

This project aims to develop an accessible and user-friendly web application that will let stakeholders search the IRDA potato soil database, one of the largest in Canada, to visualize the impact of growing practices and protocols on the biological, physicochemical, and agronomic characteristics of soils cultivated with different cropping systems.

Researcher: Richard Hogue

Read more about the project

Richard Hogue
Potato irrigation
2015-2017 • Market gardening

Developing decision support tools for integrated potato irrigation management

The aim of this project was to set up a support service to equip producers and others in the industry to improve their irrigation management.

Researcher: Carl Boivin

Read more about the project

Carl Boivin