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Effects of water table and fertilization management on nitrogen loading to groundwater

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Effects of water table and fertilization management on nitrogen loading to groundwater. / Guo, Huaming; Li, Guanghe; Zhang, Dayi et al.

In: Agricultural Water Management, Vol. 82, No. 1-2, 10.04.2006, p. 86-98.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Harvard

Guo, H, Li, G, Zhang, D, Zhang, X & Lu, C 2006, 'Effects of water table and fertilization management on nitrogen loading to groundwater', Agricultural Water Management, vol. 82, no. 1-2, pp. 86-98. https://doi.org/10.1016/j.agwat.2005.07.033

APA

Guo, H., Li, G., Zhang, D., Zhang, X., & Lu, C. (2006). Effects of water table and fertilization management on nitrogen loading to groundwater. Agricultural Water Management, 82(1-2), 86-98. https://doi.org/10.1016/j.agwat.2005.07.033

Vancouver

Guo H, Li G, Zhang D, Zhang X, Lu C. Effects of water table and fertilization management on nitrogen loading to groundwater. Agricultural Water Management. 2006 Apr 10;82(1-2):86-98. doi: 10.1016/j.agwat.2005.07.033

Author

Guo, Huaming ; Li, Guanghe ; Zhang, Dayi et al. / Effects of water table and fertilization management on nitrogen loading to groundwater. In: Agricultural Water Management. 2006 ; Vol. 82, No. 1-2. pp. 86-98.

Bibtex

@article{f260e0f62a84437e87bf1034ab99470f,
title = "Effects of water table and fertilization management on nitrogen loading to groundwater",
abstract = "Groundwater contamination by nitrate associated with fertilization practices is a ubiquitous environmental issue, and consequently of world-wide concern. Controlling this contamination requires an ability to measure and predict nitrate loading from unsaturated zone to saturated zone. A field experiment was conducted in an intensively irrigated agricultural area in Dianchi catchment of Kunming, China. Two celery (Apium graveolens) crop sites with different water table depths (Site A is 2.0 m below the soil surface; Site B is 0.5 m below the soil surface) were selected for the experiment. Both of sites were applied fertilizers at two different rates, one the highest traditionally used by farmers in the region (about 4800 kg N/ha per year, HF) and the other three-eighth of the farmer (1800 kg N/ha per year, LF). The results showed that fertilization practices impacted few effects on the balance and dynamic of water in the plant-soil-aeration zone-saturated zone system. However, groundwater table controlled vertical infiltration recharge and evaporation-transpiration rate. The vertical infiltration recharge and the evaporation-transpiration rate were averagely 0.514 and 5.897 mm/d at Site B with a water table depth of 0.5 m below the soil surface, 0.335 and 6.420 mm/d at Site A with a water table depth of 2.0 m below the soil surface, respectively. Nitrate concentrations of soil water near groundwater table under HF subplot were much higher than that under LH subplot. High fertilization rate consequently resulted in great nitrogen (including nitrate, nitrite and ammonium) loadings from aeration zone to groundwater. At Site B, nitrogen loadings were 316.03 and 223.89 kg/ha a under HF and LF, respectively. Nitrate was the dominant nitrogen component entering groundwater. Little ammonium and less nitrite transported into groundwater. Shallow water table made nitrate entering groundwater more easily and consequently determined the NO(3)(-) loading from vadose zone. For the same fertilization rate, nitrate loading to groundwater under Site B were much higher than those under Site A, with 47.11 kg NO(3)-N/ha a under Site A-HF and 311.73 kg NO(3)-N/ha a under Site B-HF. To avert or minimize the potential of groundwater nitrogen contamination in irrigated agricultural areas should determine and minimize the amounts of applied fertilizer by optimizing them to match crop requirements and environmental protection. (c) 2005 Elsevier B.V. All rights reserved.",
keywords = "SPAIN, DENITRIFICATION, SYSTEMS, BALANCE, NITRATE CONTAMINATION, IMPACT, water balance, nitrogen fertilization, SOIL, groundwater contamination, water table, CANADA, MODEL, AQUIFER, nitrate loading",
author = "Huaming Guo and Guanghe Li and Dayi Zhang and Xu Zhang and Chang'ai Lu",
year = "2006",
month = apr,
day = "10",
doi = "10.1016/j.agwat.2005.07.033",
language = "English",
volume = "82",
pages = "86--98",
journal = "Agricultural Water Management",
issn = "0378-3774",
publisher = "Elsevier",
number = "1-2",

}

RIS

TY - JOUR

T1 - Effects of water table and fertilization management on nitrogen loading to groundwater

AU - Guo, Huaming

AU - Li, Guanghe

AU - Zhang, Dayi

AU - Zhang, Xu

AU - Lu, Chang'ai

PY - 2006/4/10

Y1 - 2006/4/10

N2 - Groundwater contamination by nitrate associated with fertilization practices is a ubiquitous environmental issue, and consequently of world-wide concern. Controlling this contamination requires an ability to measure and predict nitrate loading from unsaturated zone to saturated zone. A field experiment was conducted in an intensively irrigated agricultural area in Dianchi catchment of Kunming, China. Two celery (Apium graveolens) crop sites with different water table depths (Site A is 2.0 m below the soil surface; Site B is 0.5 m below the soil surface) were selected for the experiment. Both of sites were applied fertilizers at two different rates, one the highest traditionally used by farmers in the region (about 4800 kg N/ha per year, HF) and the other three-eighth of the farmer (1800 kg N/ha per year, LF). The results showed that fertilization practices impacted few effects on the balance and dynamic of water in the plant-soil-aeration zone-saturated zone system. However, groundwater table controlled vertical infiltration recharge and evaporation-transpiration rate. The vertical infiltration recharge and the evaporation-transpiration rate were averagely 0.514 and 5.897 mm/d at Site B with a water table depth of 0.5 m below the soil surface, 0.335 and 6.420 mm/d at Site A with a water table depth of 2.0 m below the soil surface, respectively. Nitrate concentrations of soil water near groundwater table under HF subplot were much higher than that under LH subplot. High fertilization rate consequently resulted in great nitrogen (including nitrate, nitrite and ammonium) loadings from aeration zone to groundwater. At Site B, nitrogen loadings were 316.03 and 223.89 kg/ha a under HF and LF, respectively. Nitrate was the dominant nitrogen component entering groundwater. Little ammonium and less nitrite transported into groundwater. Shallow water table made nitrate entering groundwater more easily and consequently determined the NO(3)(-) loading from vadose zone. For the same fertilization rate, nitrate loading to groundwater under Site B were much higher than those under Site A, with 47.11 kg NO(3)-N/ha a under Site A-HF and 311.73 kg NO(3)-N/ha a under Site B-HF. To avert or minimize the potential of groundwater nitrogen contamination in irrigated agricultural areas should determine and minimize the amounts of applied fertilizer by optimizing them to match crop requirements and environmental protection. (c) 2005 Elsevier B.V. All rights reserved.

AB - Groundwater contamination by nitrate associated with fertilization practices is a ubiquitous environmental issue, and consequently of world-wide concern. Controlling this contamination requires an ability to measure and predict nitrate loading from unsaturated zone to saturated zone. A field experiment was conducted in an intensively irrigated agricultural area in Dianchi catchment of Kunming, China. Two celery (Apium graveolens) crop sites with different water table depths (Site A is 2.0 m below the soil surface; Site B is 0.5 m below the soil surface) were selected for the experiment. Both of sites were applied fertilizers at two different rates, one the highest traditionally used by farmers in the region (about 4800 kg N/ha per year, HF) and the other three-eighth of the farmer (1800 kg N/ha per year, LF). The results showed that fertilization practices impacted few effects on the balance and dynamic of water in the plant-soil-aeration zone-saturated zone system. However, groundwater table controlled vertical infiltration recharge and evaporation-transpiration rate. The vertical infiltration recharge and the evaporation-transpiration rate were averagely 0.514 and 5.897 mm/d at Site B with a water table depth of 0.5 m below the soil surface, 0.335 and 6.420 mm/d at Site A with a water table depth of 2.0 m below the soil surface, respectively. Nitrate concentrations of soil water near groundwater table under HF subplot were much higher than that under LH subplot. High fertilization rate consequently resulted in great nitrogen (including nitrate, nitrite and ammonium) loadings from aeration zone to groundwater. At Site B, nitrogen loadings were 316.03 and 223.89 kg/ha a under HF and LF, respectively. Nitrate was the dominant nitrogen component entering groundwater. Little ammonium and less nitrite transported into groundwater. Shallow water table made nitrate entering groundwater more easily and consequently determined the NO(3)(-) loading from vadose zone. For the same fertilization rate, nitrate loading to groundwater under Site B were much higher than those under Site A, with 47.11 kg NO(3)-N/ha a under Site A-HF and 311.73 kg NO(3)-N/ha a under Site B-HF. To avert or minimize the potential of groundwater nitrogen contamination in irrigated agricultural areas should determine and minimize the amounts of applied fertilizer by optimizing them to match crop requirements and environmental protection. (c) 2005 Elsevier B.V. All rights reserved.

KW - SPAIN

KW - DENITRIFICATION

KW - SYSTEMS

KW - BALANCE

KW - NITRATE CONTAMINATION

KW - IMPACT

KW - water balance

KW - nitrogen fertilization

KW - SOIL

KW - groundwater contamination

KW - water table

KW - CANADA

KW - MODEL

KW - AQUIFER

KW - nitrate loading

U2 - 10.1016/j.agwat.2005.07.033

DO - 10.1016/j.agwat.2005.07.033

M3 - Journal article

VL - 82

SP - 86

EP - 98

JO - Agricultural Water Management

JF - Agricultural Water Management

SN - 0378-3774

IS - 1-2

ER -