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Research ArticleA Section

Advances in Nitrogen Management for Water Quality

Jorge A. Delgado and Ronald F. Follett
Journal of Soil and Water Conservation January 2011, 66 (1) 25A-26A; DOI: https://doi.org/10.2489/jswc.66.1.25A
Jorge A. Delgado
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Ronald F. Follett
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Excerpt

Nitrogen (N) is an essential nutrient for crops and other plants and is needed for many plant physiological functions. Nitrogen is critically important for global sustainability of food and has been a key to the success of the green revolution. Due to its importance as a crop nutrient, N fertilizer is of great importance for maximizing crop production. Crop uptake of N follows a sigmoid function with N uptake necessarily preceding above-ground dry matter while early season N requirements of the root system are met. For most agricultural cropping systems, production cannot be maximized without additional N inputs. However, N inputs can also have environmental impacts because of increased losses of N to the environment (Cowling et al. 2002; Galloway et al. 2003). Management of this dynamic nutrient is a key to lessening its potential impact on the environment. Though N management is complex in many aspects, there are basic principles that can be used to reduce N losses via leaching and/or atmospheric losses (Meisinger and Delgado 2002; Mosier et al. 2002).

The risk of environmental impacts is increased when recommended management practices for reducing N losses are not implemented (Meisinger and Delgado 2002; Mosier et al. 2002). Scientists have…

Footnotes

  • Jorge A. Delgado is a soil scientist and Ronald F. Follett is research leader with the Soil Plant Nutrient Research Unit, USDA Agricultural Research Service, Fort Collins, Colorado. Jorge A. Delgado is also the research editor and chair of editorial board for the Journal of Soil and Water Conservation.

  • © 2011 by the Soil and Water Conservation Society

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Journal of Soil and Water Conservation: 66 (1)
Journal of Soil and Water Conservation
Vol. 66, Issue 1
January/February 2011
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Advances in Nitrogen Management for Water Quality
Jorge A. Delgado, Ronald F. Follett
Journal of Soil and Water Conservation Jan 2011, 66 (1) 25A-26A; DOI: 10.2489/jswc.66.1.25A

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Advances in Nitrogen Management for Water Quality
Jorge A. Delgado, Ronald F. Follett
Journal of Soil and Water Conservation Jan 2011, 66 (1) 25A-26A; DOI: 10.2489/jswc.66.1.25A
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