
Spruce Budworm
Spruce budworm have cyclical outbreaks on Canadian forests. GDG’s unique expertise in the aerial application of control agents gives private forestry producers a way to fight back effectively during an outbreak.
Our solution uses Bacillus thuringiensis var. kurstaki (Btk).

What is Btk?
Bacillus thuringiensis var. kurstaki—known as Btk—is a bacteria that’s found naturally in soil. For some 30 years, it has been used all over the world as an agent to control insect infestation in forests and agriculture.
Source: www.hc-sc.gc.ca/cps-spc/pubs/pest/_fact-fiche/btk/index-eng.php
Monitoring program steps
Identification
Experts conduct sampling in order to determine the larvae evolution of developing colonies.
Analysis
An analysis allows us to evaluate intervention thresholds and determine the best window of opportunity to start treatment.
Treatment
The application of Btk limits the damage caused by Spruce budworm.
Quality control
Quality control is done to evaluate how foliage is protected and ensure the survival of forest stands.