Problems associated with the Japanese beetle, anthracnose, and grey mold will increase due to predicted climate change in Québec. They will have a major impact on berry crops because they already require numerous pesticide sprays that do not effectively control the damage. We now have new bioclimatic models for the Japanese beetle, anthracnose, and grey mold. This project will consist of validating and adapting these models to conditions in Québec to prepare for future climatic conditions, which are likely to increase crop damage.
For the Japanese beetle component, traps will be installed on six farms in five regions for two years to obtain adult population curves during the growing season. The collected data will be compared with the data generated by the model for the beginning of the adult observation period, the peak flight period, and the end of the adult observation period.
For anthracnose and grey mold, their symptoms will be monitored and weather data collected on three farms in three regions for three years. These will be compared with infection rates predicted by the models. The data collected during the project will make it possible to optimize the models used to predict activity periods for the Japanese beetle, an exotic pest that has appeared in a number of regions in Québec, and infection risks for anthracnose and grey mold on strawberries.
From 2018 to 2021
Pest, weed, and disease control
IRDA is working to provide growers with strategies to control new crop pests that are likely to emerge as a result of climate change.
Carrefour industriel et expérimental Lanaudière | Réseau de lutte intégrée Orléans | Ecolo-Max | Pierrette Lavoie, agr. | CAE | Prisme | Club Corymbe | Ministère de l’Agriculture, des Pêcheries et de l’Alimentation du Québec
In highbush blueberry fields where stunt disease has been detected, plants that have never received nitrogen fertilizer are more vigorous and homogeneous than plants that have received nitrogen fertilizer.
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
This project consisted of using mating disruption to control dogwood borers in five orchards.
Researcher: Daniel Cormier