Subject
Spruce budworm
6
Control
3
Pest management
3
Biological control
2
Predation (Biology)
2
Western spruce budworm
2
Aerial spraying and dusting in forestry
1
Bacillus thuringiensis
1
Biology
1
Dispersal
1
Ecology
1
Economics
1
Insects
1
Jack pine budworm
1
Larvae
1
Population
1
Predatory animals
1
Research
1
insects
1