Nitrogen (N) is potentially one of the most complex elements on the Earth. It is necessary for all biological activity, but creates negative impacts on water and air quality. There is a balancing act between deficiency and surplus and the forms of N available further complicate our understanding of the dynamics. Biological fixation provides some plants with N supply while others are totally dependent upon N being available in the soil profile for the roots to extract. Nevertheless, the demand for N will increase because the human population with its increasing growth requires more protein and thus more N. Understanding the global N cycle is imperative to meeting current and future nitrogen demands while decreasing environmental impacts.

This book discusses availability, production, and recycling of N in air, water, plants, and soils. It features information on N impacts to soil and water quality, management of N in agroecosystems, and techniques to maximize the use efficiency while minimizing the risks of leakage of reactive N into the environment.

This volume in the Advances in Soil Science series is specifically devoted to availability, production, and recycling of N with impact on climate change and water quality, and management of N in agroecosystems in the context of maximizing the use efficiency and minimizing the risks of leakage of reactive N (NO-3, N¬2O) into the environment.



chapter 4|22 pages

Nitrogen Loss in Snowmelt Runoff from Non-Point Agricultural Sources on the Canadian Prairies

ByKimberley D. Schneider, Arumugam Thiagarajan, Barbara J. Cade-Menun, Brian G. McConkey, Henry F. Wilson

chapter 5|46 pages

Denitrification in Soil

ByMark S. Coyne

chapter 6|10 pages

Nitrogen Balances and Nitrogen Use Efficiency in the Nordic Countries

ByAnne Falk Øgaard, Marianne Bechmann

chapter 7|40 pages

Intensive Dairy and Beef Systems

N Loss Mitigations and Barriers to Their Adoption
ByBert F. Quin

chapter 8|42 pages

Efficient Nitrogen Management in the Tropics and Subtropics

ByRajendra Prasad, Peter R. Hobbs

chapter 9|24 pages

Enhancing Soil Organic Carbon by Managing Nitrogen in China

ByShou-Tian Ma, Xin Zhao, Chao Pu, Yang Liu, Rattan Lal, Jian-Fu Xue, Hai-Lin Zhang

chapter 10|32 pages

Managing Nitrogen in Small Landholder Hill Farms of North Eastern Indian Himalayas

ByAnup Das, Jayanta Layek, Gulab Singh Yadav, S. Babu, D. Sarkar, R.S. Meena, Rattan Lal

chapter 11|26 pages

Merits and Limitations of Enhanced Efficiency Fertilizers

ByMatthew D. Ruark, Rogério P. Soratto, Carl J. Rosen

chapter 12|16 pages

Economic and Policy Implications of Nitrogen Management

ByOtto C. Doering, Benjamin M. Gramig, Dawoon Jeong

chapter 14|18 pages

Managing the Soil Nitrogen Cycle in Agroecosystems

ByRichard A. Ferrieri, Eliot Herman, Benjamin Babst, Michael J. Schueller

chapter 15|10 pages

Nitrogen: Managing the Necessary Evil

ByRattan Lal