Reduced nitrate leaching and enhanced denitrifier activity and efficiency in organically fertilized soils

Proceedings of the National Academy of Sciences of the United States of America
Sasha B KramerHarold A Mooney

Abstract

Conventional agriculture has improved in crop yield but at large costs to the environment, particularly off-site pollution from mineral N fertilizers. In response to environmental concerns, organic agriculture has become an increasingly popular option. One component of organic agriculture that remains in question is whether it can reduce agricultural N losses to groundwater and the atmosphere relative to conventional agriculture. Here we report reduced N pollution from organic and integrated farming systems compared with a conventional farming system. We evaluated differences in denitrification potential and a suite of other soil biological and chemical properties in soil samples taken from organic, integrated, and conventional treatments in an experimental apple orchard. Organically farmed soils exhibited higher potential denitrification rates, greater denitrification efficiency, higher organic matter, and greater microbial activity than conventionally farmed soils. The observed differences in denitrifier function were then assessed under field conditions after fertilization. N(2)O emissions were not significantly different among treatments; however, N(2) emissions were highest in organic plots. Annual nitrate leaching was 4.4...Continue Reading

References

Apr 17, 2001·Science·D TilmanD Swackhamer
Apr 20, 2001·Nature·J P ReganoldH R Hinman
Jun 1, 2002·Environmental Science & Technology·Bernard T NolanBarbara C Ruddy
Jun 1, 2002·Science·Paul MäderUrs Niggli
Jun 25, 2002·Ambio·Amir H Wolfe, Jonathan A Patz
Aug 9, 2002·Nature·David TilmanStephen Polasky
Oct 31, 2003·Nature·Nicola Nosengo

❮ Previous
Next ❯

Citations

Nov 13, 2009·Proceedings. Biological Sciences·Joanna T StaleyGuy M Poppy
Sep 17, 2010·Proceedings. Biological Sciences·Joanna T StaleyDenis J Wright
Feb 2, 2016·Metabolites·Tatsuki OguraJun Kikuchi
Jan 18, 2016·Environmental Pollution·Shuoshuo GaoMinpeng Chen
May 13, 2008·Chemosphere·Nanna BjarnholtBirger Lindberg Møller
Sep 26, 2013·The Science of the Total Environment·Colin SkinnerUrs Niggli
Sep 16, 2014·The Proceedings of the Nutrition Society·Urs Niggli
Aug 9, 2016·Annals of Occupational and Environmental Medicine·Shehani A Wimalawansa, Sunil J Wimalawansa
Sep 7, 2016·Environmental Science and Pollution Research International·Taiseer Aljazzar, Mohammed Al-Qinna
May 8, 2018·Proceedings of the National Academy of Sciences of the United States of America·Jing SunJianguo Liu
Feb 24, 2019·Waste Management & Research : the Journal of the International Solid Wastes and Public Cleansing Association, ISWA·Ivã Guidini LopesRose Meire Vidotti
Nov 30, 2016·Journal of Environmental Quality·Emily A SchwagerEd Gregorich
Dec 26, 2018·Frontiers in Microbiology·Kristof BrenzingerPaul L E Bodelier
Dec 17, 2018·Environmental Science and Pollution Research International·Bang-Liang DengLing Zhang
May 7, 2011·Journal of Environmental Quality·M L López-DíazG Moreno
Jun 18, 2021·Scientific Reports·Thomas F Döring, Daniel Neuhoff
Feb 18, 2019·The Science of the Total Environment·Micòl MastrociccoGiuseppe Castaldelli
Jul 8, 2021·Ecological Applications : a Publication of the Ecological Society of America·Debasish SahaArmen R Kemanian

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.

Related Papers

Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
Keith W T GouldingAndy Whitmore
© 2021 Meta ULC. All rights reserved