Detection of off-target herbicide deposition
Summary
Herbicide movement in air; by spray drift, movement with dust, or by volatilisation and redeposition, can potentially cause injury to non-target crops and native vegetation kilometres away from the site of application.
The project provides:
- baseline information about the aerial movement and deposition of group M (e.g. glyphosate) and group I (e.g. 2,4-D) herbicides in the Macquarie Valley during summer when cotton injury has been previously documented;
- assessment of the sampling efficiency, cost effectiveness and suitability of three different methods for measuring aerial herbicide deposition and
- determination of primary routes of transport and periods of higher relative hazard so recommendations can be made for practice change and ongoing monitoring.