Sap flow analysis was developed in France in the 1980s and can be used very effectively to measure the rate of transpiration through tree trunks in woody species such as apple. This method is also used in forestry in Québec, including by researchers at Université Laval.
The hypothesis was that it should be possible to measure sap flow in apple trees and correlate it with soil water conditions and the weather. This is the first time this method has been used for apples in Québec.
From 2017 to 2018
Optimal water management
This study of how apple tree sap flow relates to soil moisture and weather conditions is a first in Québec.
Ministère de l'Agriculture, des Pêcheries et de l'Alimentation du Québec | Ferme Avicole Orléans
The data generated by this project was used to develop a new NPK fertilization chart that reflects technical, agronomic, and environmental issues.
Researcher: Christine Landry
IRDA produced posters to help producers and extension agents choose pest and disease control strategies that promote the use of IPM.
Researcher: Annabelle Firlej
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