A GIS-based study on regional pesticide deposition due to airborne drift

H.J. Holterman; J.C. van de Zande

Abstract

Off-target deposition of pesticide sprays still means a potential hazard for the environment, particularly for downwind water bodies and non-target terrestrial areas. In literature several studies can be found that try to quantify off-target drift deposition experimentally. Relatively few studies describe the potential risks of spray drift in a model-based manner. Many studies describe the relatively simple case of one field crop and one downwind ditch or stream parallel to the field edge. For an evaluation of more realistic circumstances, scaling-up to larger areas consisting of various fields and a network of connected water bodies is a logical step. The present study investigates the spatial and temporal distribution of deposits of spray drift onto surface waters in a rural pilot region with an interconnected network of water bodies. A simulation model was developed to calculate this distribution. Parameters to be adjusted include day-by-day weather conditions, water management measures (regulating water levels), selection of crops to be sprayed, choice of pesticide and dose, day and time of applications, choice of sprayer equipment and drift mitigation measures, stage of growth of the crops. Downwind drift deposits are calculated using a set of predefined drift curves covering the variations in the parameters mentioned above. The geometry and relative location of the parcels sprayed and the effective local widths of the water bodies are taken into account as well. Model results represent the spatial and temporal distribution of the drift load of pesticide spray onto the network of water bodies. The model enables a realistic evaluation in drift deposits onto surface waters in a certain region during a season. It also offers the possibility to investigate the effect of measures such as those involving drift mitigation, varying the timing of spray applications, including application planning based on weather forecasts. The results will also be used in another model that describes the fate of pesticides in water bodies and the effects on water organisms.

Original language	English
Publication status	Published - Jul 2007
Event	The EFITA/WCCA conference: 6th Biennial Conference of the European Federation of IT in Agriculture: "Environmental and rural sustainability through ICT" - Glasgow Caledonian University, Glasgow, United Kingdom Duration: 2 Jul 2007 → 5 Jul 2007

Conference/symposium

Conference/symposium	The EFITA/WCCA conference: 6th Biennial Conference of the European Federation of IT in Agriculture: "Environmental and rural sustainability through ICT"
Country/Territory	United Kingdom
City	Glasgow
Period	2/07/07 → 5/07/07

Keywords

GIS
spatial analysis
spray drift
surface water contamination
off-target deposition

Access to Document

https://edepot.wur.nl/678057

Cite this

@conference{e3a4df5eb6a34462bd5294ef600a7587,

title = "A GIS-based study on regional pesticide deposition due to airborne drift",

abstract = "Off-target deposition of pesticide sprays still means a potential hazard for the environment, particularly for downwind water bodies and non-target terrestrial areas. In literature several studies can be found that try to quantify off-target drift deposition experimentally. Relatively few studies describe the potential risks of spray drift in a model-based manner. Many studies describe the relatively simple case of one field crop and one downwind ditch or stream parallel to the field edge. For an evaluation of more realistic circumstances, scaling-up to larger areas consisting of various fields and a network of connected water bodies is a logical step. The present study investigates the spatial and temporal distribution of deposits of spray drift onto surface waters in a rural pilot region with an interconnected network of water bodies. A simulation model was developed to calculate this distribution. Parameters to be adjusted include day-by-day weather conditions, water management measures (regulating water levels), selection of crops to be sprayed, choice of pesticide and dose, day and time of applications, choice of sprayer equipment and drift mitigation measures, stage of growth of the crops. Downwind drift deposits are calculated using a set of predefined drift curves covering the variations in the parameters mentioned above. The geometry and relative location of the parcels sprayed and the effective local widths of the water bodies are taken into account as well. Model results represent the spatial and temporal distribution of the drift load of pesticide spray onto the network of water bodies. The model enables a realistic evaluation in drift deposits onto surface waters in a certain region during a season. It also offers the possibility to investigate the effect of measures such as those involving drift mitigation, varying the timing of spray applications, including application planning based on weather forecasts. The results will also be used in another model that describes the fate of pesticides in water bodies and the effects on water organisms. ",

keywords = "GIS, spatial analysis, spray drift, surface water contamination, off-target deposition",

author = "H.J. Holterman and {van de Zande}, J.C.",

year = "2007",

month = jul,

language = "English",

note = "The EFITA/WCCA conference: 6th Biennial Conference of the European Federation of IT in Agriculture: {"}Environmental and rural sustainability through ICT{"} ; Conference date: 02-07-2007 Through 05-07-2007",

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TY - CONF

T1 - A GIS-based study on regional pesticide deposition due to airborne drift

AU - Holterman, H.J.

AU - van de Zande, J.C.

PY - 2007/7

Y1 - 2007/7

N2 - Off-target deposition of pesticide sprays still means a potential hazard for the environment, particularly for downwind water bodies and non-target terrestrial areas. In literature several studies can be found that try to quantify off-target drift deposition experimentally. Relatively few studies describe the potential risks of spray drift in a model-based manner. Many studies describe the relatively simple case of one field crop and one downwind ditch or stream parallel to the field edge. For an evaluation of more realistic circumstances, scaling-up to larger areas consisting of various fields and a network of connected water bodies is a logical step. The present study investigates the spatial and temporal distribution of deposits of spray drift onto surface waters in a rural pilot region with an interconnected network of water bodies. A simulation model was developed to calculate this distribution. Parameters to be adjusted include day-by-day weather conditions, water management measures (regulating water levels), selection of crops to be sprayed, choice of pesticide and dose, day and time of applications, choice of sprayer equipment and drift mitigation measures, stage of growth of the crops. Downwind drift deposits are calculated using a set of predefined drift curves covering the variations in the parameters mentioned above. The geometry and relative location of the parcels sprayed and the effective local widths of the water bodies are taken into account as well. Model results represent the spatial and temporal distribution of the drift load of pesticide spray onto the network of water bodies. The model enables a realistic evaluation in drift deposits onto surface waters in a certain region during a season. It also offers the possibility to investigate the effect of measures such as those involving drift mitigation, varying the timing of spray applications, including application planning based on weather forecasts. The results will also be used in another model that describes the fate of pesticides in water bodies and the effects on water organisms.

AB - Off-target deposition of pesticide sprays still means a potential hazard for the environment, particularly for downwind water bodies and non-target terrestrial areas. In literature several studies can be found that try to quantify off-target drift deposition experimentally. Relatively few studies describe the potential risks of spray drift in a model-based manner. Many studies describe the relatively simple case of one field crop and one downwind ditch or stream parallel to the field edge. For an evaluation of more realistic circumstances, scaling-up to larger areas consisting of various fields and a network of connected water bodies is a logical step. The present study investigates the spatial and temporal distribution of deposits of spray drift onto surface waters in a rural pilot region with an interconnected network of water bodies. A simulation model was developed to calculate this distribution. Parameters to be adjusted include day-by-day weather conditions, water management measures (regulating water levels), selection of crops to be sprayed, choice of pesticide and dose, day and time of applications, choice of sprayer equipment and drift mitigation measures, stage of growth of the crops. Downwind drift deposits are calculated using a set of predefined drift curves covering the variations in the parameters mentioned above. The geometry and relative location of the parcels sprayed and the effective local widths of the water bodies are taken into account as well. Model results represent the spatial and temporal distribution of the drift load of pesticide spray onto the network of water bodies. The model enables a realistic evaluation in drift deposits onto surface waters in a certain region during a season. It also offers the possibility to investigate the effect of measures such as those involving drift mitigation, varying the timing of spray applications, including application planning based on weather forecasts. The results will also be used in another model that describes the fate of pesticides in water bodies and the effects on water organisms.

KW - GIS

KW - spatial analysis

KW - spray drift

KW - surface water contamination

KW - off-target deposition

M3 - Abstract

T2 - The EFITA/WCCA conference: 6th Biennial Conference of the European Federation of IT in Agriculture: "Environmental and rural sustainability through ICT"

Y2 - 2 July 2007 through 5 July 2007