Nitrate leaching in agriculture to upper groundwater in the sandy regions of the Netherlands during the 1992-1995 period

The Dutch National Monitoring Programme for Effectiveness of the Minerals Policy (LMM) was initiated to allow detection of a statutory reduction in nitrate leaching caused by a decreasing N load. The starting point, or baseline, was taken as the nitrate concentration of the upper metre of groundwate...

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Veröffentlicht in:Environmental monitoring and assessment 2005-03, Vol.102 (1-3), p.225-241
Hauptverfasser: BOUMANS, Leo J. M, FRATERS, Dico, VAN DRECHT, Gerard
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FRATERS, Dico
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description The Dutch National Monitoring Programme for Effectiveness of the Minerals Policy (LMM) was initiated to allow detection of a statutory reduction in nitrate leaching caused by a decreasing N load. The starting point, or baseline, was taken as the nitrate concentration of the upper metre of groundwater sampled on 99 farms in the 1992-1995 period in the sandy areas of the Netherlands, where predominantly grass and maize grow. We found here that a reduction in nitrate leaching of more than 20% in future would almost certainly be detected with the LMM. Detecting downward trends due to decreasing N load will require nitrate concentrations to also be related to soil drainage, precipitation excess leading to groundwater recharge and to location. Furthermore, we found that about 16% of the N load in the Dutch sandy regions was being leached to the upper metre of groundwater in the 1992-1995 period. The critical N load in approximately 1990 for exceeding the EC limit value for nitrate, NO3, (50 mg L(-1)) in the upper metre of groundwater for the mean situation for grassland, maize and arable land in the sandy area was found to be 210 kg ha(-1) a(-1). Because manure management has been altered, the critical load found will be lower than the current critical load.
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M</creatorcontrib><creatorcontrib>FRATERS, Dico</creatorcontrib><creatorcontrib>VAN DRECHT, Gerard</creatorcontrib><title>Nitrate leaching in agriculture to upper groundwater in the sandy regions of the Netherlands during the 1992-1995 period</title><title>Environmental monitoring and assessment</title><addtitle>Environ Monit Assess</addtitle><description>The Dutch National Monitoring Programme for Effectiveness of the Minerals Policy (LMM) was initiated to allow detection of a statutory reduction in nitrate leaching caused by a decreasing N load. The starting point, or baseline, was taken as the nitrate concentration of the upper metre of groundwater sampled on 99 farms in the 1992-1995 period in the sandy areas of the Netherlands, where predominantly grass and maize grow. We found here that a reduction in nitrate leaching of more than 20% in future would almost certainly be detected with the LMM. 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M</au><au>FRATERS, Dico</au><au>VAN DRECHT, Gerard</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Nitrate leaching in agriculture to upper groundwater in the sandy regions of the Netherlands during the 1992-1995 period</atitle><jtitle>Environmental monitoring and assessment</jtitle><addtitle>Environ Monit Assess</addtitle><date>2005-03-01</date><risdate>2005</risdate><volume>102</volume><issue>1-3</issue><spage>225</spage><epage>241</epage><pages>225-241</pages><issn>0167-6369</issn><eissn>1573-2959</eissn><coden>EMASDH</coden><abstract>The Dutch National Monitoring Programme for Effectiveness of the Minerals Policy (LMM) was initiated to allow detection of a statutory reduction in nitrate leaching caused by a decreasing N load. The starting point, or baseline, was taken as the nitrate concentration of the upper metre of groundwater sampled on 99 farms in the 1992-1995 period in the sandy areas of the Netherlands, where predominantly grass and maize grow. We found here that a reduction in nitrate leaching of more than 20% in future would almost certainly be detected with the LMM. Detecting downward trends due to decreasing N load will require nitrate concentrations to also be related to soil drainage, precipitation excess leading to groundwater recharge and to location. Furthermore, we found that about 16% of the N load in the Dutch sandy regions was being leached to the upper metre of groundwater in the 1992-1995 period. The critical N load in approximately 1990 for exceeding the EC limit value for nitrate, NO3, (50 mg L(-1)) in the upper metre of groundwater for the mean situation for grassland, maize and arable land in the sandy area was found to be 210 kg ha(-1) a(-1). Because manure management has been altered, the critical load found will be lower than the current critical load.</abstract><cop>Dordrect</cop><pub>Springer</pub><pmid>15869188</pmid><doi>10.1007/s10661-005-6023-5</doi><tpages>17</tpages></addata></record>
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subjects Agricultural land
Agriculture - legislation & jurisprudence
Agronomy. Soil science and plant productions
Applied sciences
Assessments
Biological and medical sciences
Corn
Earth sciences
Earth, ocean, space
Engineering and environment geology. Geothermics
Environmental Monitoring
Exact sciences and technology
Fertilizers
Fundamental and applied biological sciences. Psychology
Grasslands
Groundwater
Groundwater recharge
Groundwaters
Leaching
Maize
Manure
Models, Theoretical
Natural water pollution
Netherlands
Nitrates
Nitrates - analysis
Nitrogen
Policies
Pollution
Pollution, environment geology
Precipitation excess
Reduction
Silicon Dioxide
Soil and water pollution
Soil science
Water analysis
Water Movements
Water Pollutants, Chemical - analysis
Water Pollution - prevention & control
Water sampling
Water Supply
Water treatment and pollution
Zea mays
title Nitrate leaching in agriculture to upper groundwater in the sandy regions of the Netherlands during the 1992-1995 period
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