Add salt to control problematic plants: freshwater marshes
Overall effectiveness category No evidence found (no assessment)
Number of studies: 0
Background information and definitions
Direct and temporary application of salt or salty water to marshes, for example by spreading or spraying, may kill or reduce the growth of problematic plants that cannot tolerate high salinities. Salt may also be more cost effective than other control methods, such as hand removal or herbicide application (Kuhn & Zedler 1997). Caution: This action may have long-term and widespread impacts on native plants and other organisms, both in the focal site and nearby ecosystems (Alluvium 2013). So, it may be best to use short-term and targeted applications (Kuhn & Zedler 1997).
For this action, “vegetation” refers to overall or non-target vegetation. Studies that only report responses of target problematic plants have not been summarized.
Related actions: Facilitate tidal exchange to restore degraded marshes.
Alluvium (2013) Investigation of Alternative Options to Control Phragmites at Reedy Lake. Report P112088_R01_V03 for the Corangamite Catchment Management Authority.
Kuhn N.L. & Zedler J.B. (1997) Differential effects of salinity and soil saturation on native and exotic plants of a coastal salt marsh. Estuaries, 20, 391–403.