Introduction     PACE     DoseAdjustment     LiDAR     DoseTranslation     Comments  

• Pesticide manufacturers often increase the normal margin-for-error on the label recommended dose-rate to ensure that reliable efficacy is achieved with orchard spraying products across a broad range of target structures.  
• However, the practical experience of some fruit growers demonstrated that label recommended dose-rates can be reduced in some circumstances without a significant reduction of efficacy. 
• For the range of tree fruit structures cultivated in the UK, PACE research established a method for optimising the adjustment of dose-rate  based on data from a tractor mounted scanning LiDAR system .
• The method was later simplified to make use of grower assessment of canopy density and height  using a published leaflet.
• A single webpage now provides an alternative to the paper leaflet and improves the quality control over the calculation of label dose-rate adjustment .
• This technology simplifies the selection of inputs to describe: the sprayer set-up, the appropriate pesticide category and the orchard canopy structure (i.e. density and height). 
• The website can be easily adapted to: increase the range of orchard structure information and improve the generality of underpinning theory.