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Issues and Challenges

Herbicides

Mechanical Operations

Burning

Reforestation

Stand Tending

Fertilizing

Rehabilitating Degraded Features and Sites

Herbicides

The following section summarizes the recommended best management practices for applying herbicides on karst terrain. Be sure to check out 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 rates).
  • 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 environments.

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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 areas:

High Vulnerability Areas

In addition to the recommendations for low and moderate vulnerability areas, the following best management practice is recommended on high vulnerability areas:

  • Herbicides 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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