Monitoring Nitrogen Leaching for the Evaluation of the Dutch Minerals Policy for Agriculture in Clay Regions

This paper presents the results of the Dutch monitoring program for agriculture in the clay regions for the period 1996–2000 and evaluates the monitoring strategy. A wide range of farms (25 to 85%) had a NO3–-N concentration in tile drainwater higher than the EU standard of 11.3 mg/l. The low figure...

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Main Authors: Dico Fraters, Leo J.M. Boumans, Ton C. van Leeuwen, Wim D. de Hoop
Format: Article
Language:English
Published: Wiley 2001-01-01
Series:The Scientific World Journal
Online Access:http://dx.doi.org/10.1100/tsw.2001.310
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author Dico Fraters
Leo J.M. Boumans
Ton C. van Leeuwen
Wim D. de Hoop
author_facet Dico Fraters
Leo J.M. Boumans
Ton C. van Leeuwen
Wim D. de Hoop
author_sort Dico Fraters
collection DOAJ
description This paper presents the results of the Dutch monitoring program for agriculture in the clay regions for the period 1996–2000 and evaluates the monitoring strategy. A wide range of farms (25 to 85%) had a NO3–-N concentration in tile drainwater higher than the EU standard of 11.3 mg/l. The low figure is related to wet winters; the high, to dry winters. Arable farms are more prone to NO3– leaching than dairy farms. On arable farms, about 25% of the N surplus leached to groundwater and tile drainwater, on dairy farms this was about 15%. N in tile drainwater has shown to be the best indicator for monitoring the effects of farming practice changes in the clay regions. The average NO3–-N concentration in tile drainwater was 18.8 and 3.2 mg/l in borehole water on farms where both were monitored. It is known that N use has a relationship with NO3– in tile drainwater and not with NH4+ and organic N. The presented results indicate that crop rotation and precipitation strongly influence NO3– concentration in tile drainwater.
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institution Kabale University
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publishDate 2001-01-01
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series The Scientific World Journal
spelling doaj-art-c2f04a9a993c4a2a8a193433d4d617b22025-02-03T01:24:16ZengWileyThe Scientific World Journal1537-744X2001-01-01175876610.1100/tsw.2001.310Monitoring Nitrogen Leaching for the Evaluation of the Dutch Minerals Policy for Agriculture in Clay RegionsDico Fraters0Leo J.M. Boumans1Ton C. van Leeuwen2Wim D. de Hoop3National Institute of Public Health and the Environment, Bilthoven, The NetherlandsNational Institute of Public Health and the Environment, Bilthoven, The NetherlandsNational Institute of Public Health and the Environment, Bilthoven, The NetherlandsNational Institute of Public Health and the Environment, Bilthoven, The NetherlandsThis paper presents the results of the Dutch monitoring program for agriculture in the clay regions for the period 1996–2000 and evaluates the monitoring strategy. A wide range of farms (25 to 85%) had a NO3–-N concentration in tile drainwater higher than the EU standard of 11.3 mg/l. The low figure is related to wet winters; the high, to dry winters. Arable farms are more prone to NO3– leaching than dairy farms. On arable farms, about 25% of the N surplus leached to groundwater and tile drainwater, on dairy farms this was about 15%. N in tile drainwater has shown to be the best indicator for monitoring the effects of farming practice changes in the clay regions. The average NO3–-N concentration in tile drainwater was 18.8 and 3.2 mg/l in borehole water on farms where both were monitored. It is known that N use has a relationship with NO3– in tile drainwater and not with NH4+ and organic N. The presented results indicate that crop rotation and precipitation strongly influence NO3– concentration in tile drainwater.http://dx.doi.org/10.1100/tsw.2001.310
spellingShingle Dico Fraters
Leo J.M. Boumans
Ton C. van Leeuwen
Wim D. de Hoop
Monitoring Nitrogen Leaching for the Evaluation of the Dutch Minerals Policy for Agriculture in Clay Regions
The Scientific World Journal
title Monitoring Nitrogen Leaching for the Evaluation of the Dutch Minerals Policy for Agriculture in Clay Regions
title_full Monitoring Nitrogen Leaching for the Evaluation of the Dutch Minerals Policy for Agriculture in Clay Regions
title_fullStr Monitoring Nitrogen Leaching for the Evaluation of the Dutch Minerals Policy for Agriculture in Clay Regions
title_full_unstemmed Monitoring Nitrogen Leaching for the Evaluation of the Dutch Minerals Policy for Agriculture in Clay Regions
title_short Monitoring Nitrogen Leaching for the Evaluation of the Dutch Minerals Policy for Agriculture in Clay Regions
title_sort monitoring nitrogen leaching for the evaluation of the dutch minerals policy for agriculture in clay regions
url http://dx.doi.org/10.1100/tsw.2001.310
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AT toncvanleeuwen monitoringnitrogenleachingfortheevaluationofthedutchmineralspolicyforagricultureinclayregions
AT wimddehoop monitoringnitrogenleachingfortheevaluationofthedutchmineralspolicyforagricultureinclayregions