Spray applications in arable crops cause off-target spray deposits downwind from the treated field. Throughout several decades, many experiments have been carried out by many researchers to quantify these downwind spray deposits and their relation to sprayer settings, field conditions and environmental conditions. Still, there is a large variance in the observed data that cannot be explained satisfactorily by the experimental and environmental conditions. Variance in the data is most likely caused by sprayer boom movements and local fluctuations in driving speed, wind speed and wind direction. Experimentally quantifying the effects of such fluctuations on the variance in spray drift deposits is laborious and expensive. In this study variations in downwind spray deposits caused by sprayer boom movements are investigated based on simulations using the spray drift model IDEFICS. Realistic boom movements can easily result in coefficients of variation of tens of %.
|Name||Aspects of Applied Biology|
|Publisher||Association of Applied Biologists|
|Conference||International Advances in Pesticide Application|
|Period||9/01/18 → 11/01/18|
- field trials
- boom movements
- spray depositions