Features and Sites
The following section summarizes the recommended best management
practices for applying herbicides on karst terrain. Be sure to
more detailed information in the Karst
Management Handbook for British Columbia.
Low Vulnerability Areas
The following best management practices are recommended:
- Evaluate the potential for detrimental impacts on karst systems
before using herbicides.
- Select appropriate herbicides for the type of karst terrain
being treated (e.g., toxicity levels, chemical pathways, breakdown
- Limit aerial applications of herbicides to karst areas with
sufficiently thick soil and/or till cover to break down the
herbicide before it can leach into karst groundwater and subsurface
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Moderate Vulnerability Areas
In addition to the recommendations for low vulnerability areas, the following
best management practice is recommended on moderate vulnerability
High Vulnerability Areas
In addition to the recommendations for low and moderate vulnerability
areas, the following best management practice is recommended
should not be used on high vulnerability areas. If herbicides
must be used, employ ground spot treatments (e.g., hack and squirt).
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