Simulation of drift of pesticides: development and validation of a model.
Commun Agric Appl Biol Sci
; 68(4 Pt B): 749-58, 2003.
Article
in En
| MEDLINE
| ID: mdl-15151311
ABSTRACT
Over the last decade drift of pesticides has been recognized as a major problem for the environment. High fractions of pesticides can be transported through the air and deposited in neighbouring ecosystems during and after application. A new computer-two steps-drift model is developed FYDRIMO or F(ph)Ysical DRift MOdel. In the first step the droplet size spectrum of a nozzle is analysed. In this way the volume percentage of droplets with a certain size is known. In the second step the model results in a prediction of deposition of each droplet with a certain size. This second part of the model runs in MATLAB and is grounded on a combination of two physical factors gravity force and friction forces. In this stage of development corrections are included for evaporation and wind force following a certain measured wind profile. For validation wind tunnel experiments were performed. Salt solutions were sprayed at two wind velocities and variable distance above the floor. Small gutters in the floor filled with filter paper were used to collect the sprayed droplets. After analysing and comparing the wind tunnel results with the model predictions, FYDRIMO seems to have good predicting capacities.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Pesticides
/
Environmental Monitoring
/
Agriculture
/
Models, Theoretical
Type of study:
Etiology_studies
/
Prognostic_studies
/
Risk_factors_studies
Language:
En
Journal:
Commun Agric Appl Biol Sci
Journal subject:
SAUDE AMBIENTAL
Year:
2003
Document type:
Article
Affiliation country:
Belgium
Publication country:
BE
/
BELGICA
/
BELGIQUE
/
BELGIUM
/
BÉLGICA