Nova Scotia Takes Action Against Spruce Budworm in Cape Breton Forests
N.S. government treating Cape Breton forest to stop spread of spruce budworm

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The Nova Scotia government is treating 1,200 hectares of forest in northwestern Cape Breton to combat the spruce budworm, a moth that threatens woodlands and increases fire risk. The province will use a biological insecticide, Bacillus thuringiensis kurstaki, primarily on Crown lands, with private landowners also able to participate.
- 01The treatment area is located in the Pleasant Bay area of Inverness County, Nova Scotia.
- 02The biological insecticide targets the larvae stage of the spruce budworm to prevent population growth.
- 03Kyle MacQuarrie, ministerial assistant for Natural Resources, emphasized the importance of early intervention to mitigate future forest damage.
- 04Spruce budworm outbreaks can severely defoliate tens of millions of hectares of trees every 30 to 40 years.
- 05The last significant outbreak in Nova Scotia occurred in the 1970s and 1980s, affecting over one million hectares.
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This summer, the Nova Scotia government is proactively treating 1,200 hectares of forest in northwestern Cape Breton to combat the spruce budworm, a moth that poses a significant threat to local woodlands and increases the risk of forest fires. The province plans to apply a biological insecticide known as Bacillus thuringiensis kurstaki to target the budworm in its larvae stage, particularly in the Pleasant Bay area of Inverness County. The government aims to implement early treatment to halt population growth and minimize the necessity for subsequent treatments. While the treatment will primarily focus on Crown lands, private landowners in the vicinity can also opt to use the insecticide. Kyle MacQuarrie, ministerial assistant for Natural Resources, highlighted the importance of early action to prevent larger impacts on Nova Scotia's forests in the future. The spruce budworm feeds mainly on balsam fir and various spruce species, leading to severe defoliation during outbreak cycles that occur every 30 to 40 years. The last significant outbreak in Nova Scotia occurred during the 1970s and 1980s, affecting over one million hectares of forest.
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This treatment aims to protect local forests from the spruce budworm, which could otherwise lead to increased fire risks and long-term ecological damage.
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