Silverleaf Whitefly (SLW) sampling and action thresholds were revised in 2024 superseding the decision support tool (DST). This threshold is based on the same data set gathered to understand SLW population growth trajectories in cotton fields around Southern Qld and NSW between 2014-19.
The revised threshold utilises a more user friendly sampling strategy and couples this with an easy to interpret matrix showing how the percentage of nymph infested leaves can be related to different control actions depending on level of infestation and crop development stage. This method can be used to track the development of SLW populations in crop and inform management decisions.
Download the CottonInfo fact sheet on the revised Silverleaf Whitefly sampling and thresholds here.