Effects of poorly and well drained conditions on the fate of nitrogen in an agricultural tile drained calcareous clay field.

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Effects of poorly and well drained conditions on the fate of nitrogen in an agricultural tile drained calcareous clay field. / Nagy, David; Khodadad Motarjemi, Saghar; Rosenbom, Annette Elisabeth; Iversen, Bo Vangsø; Plauborg, Finn.

2019. Abstract from 2018 - 2019 SSSA International Soils Meeting , San Diego, United States.

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Nagy, D, Khodadad Motarjemi, S, Rosenbom, AE, Iversen, BV & Plauborg, F 2019, 'Effects of poorly and well drained conditions on the fate of nitrogen in an agricultural tile drained calcareous clay field.' 2018 - 2019 SSSA International Soils Meeting , San Diego, United States, 06/01/2019 - 09/01/2019, .

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@conference{6d6d97993a834d319c435e50cc6a7b2c,
title = "Effects of poorly and well drained conditions on the fate of nitrogen in an agricultural tile drained calcareous clay field.",
abstract = "A long term experiment has been set up on a field at Tokkerup, which is located on South Zealand, Denmark, in order to understand the water flow dynamics and fate of nitrogen in the matrix, drainage and groundwater flow. The field is 3.8 ha, relatively flat, with macroporous clayey and calcareous subsoil (JB7, JB12 by the Danish soil classification.). The field has been separated to poorly drained (North) and well-drained (South) area, due to the high groundwater table in the poorly drained part. Downstream in a well at the poorly drained and the well-drained part an automatic magnetometer to measure drainage water flow and an automated water sampler have been deployed to separate the water flow and chemical characteristics of the water from the two part of the field. The experiment aims at finding how the fate of nitrogen differs in the two parts of the field. According to Hansen and Jensen (2013) plot 6 in Northern part has lower crop yield, than in the Southern part of the field with equal N fertilizer input. It is suggested that the excess nitrogen either bypasses the matrix through preferential flow based on Holbak (2017), or leaving the system through denitrification, due to the generally higher groundwater table. In order to identify the responsible processes for the nitrogen loss, plot 2 (South) and 6 (North), which are located between two side drains, have been selected for further studies. For each plot/location TDR probes and Redox probes have been installed at three different depths at 0.3, 0.6 and 0.9 meters, perpendicular to the side drains at distances 0.5, 4.25 and 8 m. Six piezometer tubes were placed at only two depths of 0.6 and 0.9 m, but at the same distances.",
keywords = "Nitrate leaching, Drainage, field experiment",
author = "David Nagy and {Khodadad Motarjemi}, Saghar and Rosenbom, {Annette Elisabeth} and Iversen, {Bo Vangs{\o}} and Finn Plauborg",
year = "2019",
month = "1",
day = "9",
language = "English",
note = "2018 - 2019 SSSA International Soils Meeting : SOILS ACROSS LATITUDES, SSSA2019 ; Conference date: 06-01-2019 Through 09-01-2019",
url = "https://www.sacmeetings.org/",

}

RIS

TY - ABST

T1 - Effects of poorly and well drained conditions on the fate of nitrogen in an agricultural tile drained calcareous clay field.

AU - Nagy, David

AU - Khodadad Motarjemi, Saghar

AU - Rosenbom, Annette Elisabeth

AU - Iversen, Bo Vangsø

AU - Plauborg, Finn

PY - 2019/1/9

Y1 - 2019/1/9

N2 - A long term experiment has been set up on a field at Tokkerup, which is located on South Zealand, Denmark, in order to understand the water flow dynamics and fate of nitrogen in the matrix, drainage and groundwater flow. The field is 3.8 ha, relatively flat, with macroporous clayey and calcareous subsoil (JB7, JB12 by the Danish soil classification.). The field has been separated to poorly drained (North) and well-drained (South) area, due to the high groundwater table in the poorly drained part. Downstream in a well at the poorly drained and the well-drained part an automatic magnetometer to measure drainage water flow and an automated water sampler have been deployed to separate the water flow and chemical characteristics of the water from the two part of the field. The experiment aims at finding how the fate of nitrogen differs in the two parts of the field. According to Hansen and Jensen (2013) plot 6 in Northern part has lower crop yield, than in the Southern part of the field with equal N fertilizer input. It is suggested that the excess nitrogen either bypasses the matrix through preferential flow based on Holbak (2017), or leaving the system through denitrification, due to the generally higher groundwater table. In order to identify the responsible processes for the nitrogen loss, plot 2 (South) and 6 (North), which are located between two side drains, have been selected for further studies. For each plot/location TDR probes and Redox probes have been installed at three different depths at 0.3, 0.6 and 0.9 meters, perpendicular to the side drains at distances 0.5, 4.25 and 8 m. Six piezometer tubes were placed at only two depths of 0.6 and 0.9 m, but at the same distances.

AB - A long term experiment has been set up on a field at Tokkerup, which is located on South Zealand, Denmark, in order to understand the water flow dynamics and fate of nitrogen in the matrix, drainage and groundwater flow. The field is 3.8 ha, relatively flat, with macroporous clayey and calcareous subsoil (JB7, JB12 by the Danish soil classification.). The field has been separated to poorly drained (North) and well-drained (South) area, due to the high groundwater table in the poorly drained part. Downstream in a well at the poorly drained and the well-drained part an automatic magnetometer to measure drainage water flow and an automated water sampler have been deployed to separate the water flow and chemical characteristics of the water from the two part of the field. The experiment aims at finding how the fate of nitrogen differs in the two parts of the field. According to Hansen and Jensen (2013) plot 6 in Northern part has lower crop yield, than in the Southern part of the field with equal N fertilizer input. It is suggested that the excess nitrogen either bypasses the matrix through preferential flow based on Holbak (2017), or leaving the system through denitrification, due to the generally higher groundwater table. In order to identify the responsible processes for the nitrogen loss, plot 2 (South) and 6 (North), which are located between two side drains, have been selected for further studies. For each plot/location TDR probes and Redox probes have been installed at three different depths at 0.3, 0.6 and 0.9 meters, perpendicular to the side drains at distances 0.5, 4.25 and 8 m. Six piezometer tubes were placed at only two depths of 0.6 and 0.9 m, but at the same distances.

KW - Nitrate leaching

KW - Drainage

KW - field experiment

M3 - Conference abstract for conference

ER -