Defra - Department for Environment, Food and Rural Affairs.

Science Search

Science and Research Projects

Return to Science Search homepage   Return to Project List

The characterisation of windbreaks for the reduction of drift during orchard and hop spraying - PA1723

Description
The object of this research is to formulate a practical method for the assessment of the drift reduction effects of windbreaks during orchard and hop spraying. This objective will be achieved by the combination of modelling approaches and field measurements. The information that will be generated by this research is vital to the needs of pesticide users for demonstrating compliance with the Code of Practice for the Safe Use of Pesticides on Farm Holdings. The results of this research will be used to establish a classification of the drift reduction from different windbreaks. This will enable the appropriate adjustment of buffer zones as part of a Local Environmental Risk Assessments for Pesticides (LERAPs) for orchard and hop uses.
Objective
1. To review and quantify the range of structural variability of the different windbreak systems.
2. To perform field-scale drift trials on a range of different windbreaks.
3. To perform windtunnel measurements on a range of small-scale windbreak models and establish the scaling effects of porosity, wind angle and corner geometry.
4. To establish underpinning mathematical modelling approaches.
5. To establish a drift reduction classification for different windbreaks.
Project Documents
• Final Report : The characterisation of windbreaks for the reduction of drift during orchard and hop spraying   (5936k)
Time-Scale and Cost
From: 2000

To: 2003

Cost: £492,000
Contractor / Funded Organisations
Silsoe Research Institute (BBSRC)
Keywords
Application              
Pest and Weed Control              
Pesticide use              
Plants and Animals              
Fields of Study
Pesticide Safety