Abstract
In the Netherlands spray drift reduction measures are obligatory when spraying alongside
waterways. Drift Reducing Technology (DRT) is certified through standardised spray
drift measurements in the field and by means of the classification of drift reducing nozzle
types in the laboratory. Approved DRT and classified nozzles in the drift reduction classes
50%, 75%, 90% and 95% are officially published on a website. Since the introduction of
the nozzle classification system in 1999, little measurements have been done with higher
levels of drift reducing nozzles, and not at all with the recently developed nozzle types.
Moreover the initial spray drift measurements in the field to calibrate the spray drift model
IDEFICS were performed spraying a potato crop. Therefore a series of measurements was
set up to validate the outcome of the spray drift model with field results of some ‘old and
new’ nozzle types spraying a bare soil surface with a boom sprayer. Results are presented
for spray drift deposition next to the sprayed swath on bare soil surface and for airborne
spray drift measured at 5 m and 10 m distance from the last nozzle up to 6 m height. A
comparison is made with the outcome of the classification of the different nozzle types
based on spray drift model calculations and the field measurements on bare soil surface. A
comparison is also made with the results from the same nozzle types running over a standard
drift test bench (ISO22369-3) which were measured under similar conditions in the field.
Original language | English |
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Title of host publication | International Advances in Pesticide Application, Oxford, UK |
Editors | P.G. Andersen, P. Balsari, P.I. Carpenter, S.E. Cooper, C.R. Glass, B. Magri, P.C.H. Miller, C. Mountford-Smith, T.H. Robinson, D. Stock, W.A. Taylor, J.C. van de Zande |
Place of Publication | Wellesbourne, Warwick CV35 9EF, UK |
Publisher | Association of Applied Biologists |
Pages | 245-254 |
Volume | 122 |
Publication status | Published - 2014 |
Event | Aspects of Applied Biology 122, International Advances in Pesticide Application, Oxford, UK - Duration: 8 Jan 2014 → 10 Jan 2014 |
Conference/symposium
Conference/symposium | Aspects of Applied Biology 122, International Advances in Pesticide Application, Oxford, UK |
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Period | 8/01/14 → 10/01/14 |