Nitrate leaching from organic arable crop rotations is mostly determined by autumn field management

2011 ◽  
Vol 142 (3-4) ◽  
pp. 149-160 ◽  
Author(s):  
M. Askegaard ◽  
J.E. Olesen ◽  
I.A. Rasmussen ◽  
K. Kristensen
Keyword(s):  
Nitrate Leaching ◽  
Crop Rotations ◽  
Field Management ◽  
Arable Crop

scholarly journals Review of key causes and sources for N<sub>2</sub>O emissions and NO<sub>3</sub>-leaching from organic arable crop rotations

2018 ◽  
Author(s):  
Sissel Hansen ◽  
Randi Berland Frøseth ◽  
Maria Stenberg ◽  
Jarosław Stalenga ◽  
Jørgen E. Olesen ◽  
...  
Keyword(s):  
Organic Matter ◽  
Nitrate Leaching ◽  
Organic Production ◽  
Crop Rotations ◽  
Organic Fertilizers ◽  
N2o Emissions ◽  
Catch Crops ◽  
Arable Crop ◽  
N2o Fluxes ◽  
The Impact

Abstract. The emissions of nitrous oxide (N2O) and leaching of nitrate (NO3) have considerable negative impacts on climate and the environment. Although these environmental burdens are on average less per unit area in organic than in non-organic production, they are not smaller per unit of product. If organic farming is to maintain its goal of being an environmentally friendly production system, these emissions should be mitigated. We discuss the impact of possible triggers within organic arable farming practice for the risk of N2O emissions and NO3 leaching under European climatic conditions, and possible strategies to reduce these. Organic arable crop rotations can be characterised as diverse with frequent use of legumes, intercropping and organic fertilizers. The soil organic matter content and share of active organic matter, microbial and faunal activity are higher, soil structure better and yields lower, than in non-organic, arable crop rotations. Soil mineral nitrogen (SMN), N2O emissions and NO3 leaching are low under growing crops, but there is high potential for SMN accumulation and losses after crop termination or crop harvest. The risk for high N2O fluxes is increased when large amounts of herbage or organic fertilizers with readily available nitrogen (N) and carbon are incorporated into the soil or left on the surface. Freezing/thawing, drying/rewetting, compacted and/or wet soil and mixing with rotary harrow further enhance the risk for high N2O fluxes. These complex soil N dynamics mask the correlation between total N-input and N2O emissions from organic arable crop rotations. Incorporation of N rich plant residues or mechanical weeding followed by bare fallow increases the risk of nitrate leaching. In contrast, strategic use of deep-rooted crops with long growing seasons in the rotation reduces nitrate leaching risk. Reduced tillage can reduce N leaching if yields are maintained. Targeted treatment and use of herbage from green manures, crop residues and catch crops will increase N efficiency and reduce N2O emissions and NO3 leaching. Continued regular use of catch crops has the potential to reduce NO3 leaching but may enhance N2O emissions. A mixture of legumes and non-legumes (for instance grasses or cereals) are as efficient a catch crop as monocultures of non-legume species.

Is organic agriculture in line with the EU-Nitrate directive? On-farm nitrate leaching from organic and conventional arable crop rotations

2020 ◽  
Vol 298 ◽  
pp. 106964 ◽  
Author(s):  
Lars Biernat ◽  
Friedhelm Taube ◽  
Iris Vogeler ◽  
Thorsten Reinsch ◽  
Christof Kluß ◽  
...  
Keyword(s):  
Nitrate Leaching ◽  
Organic Agriculture ◽  
Crop Rotations ◽  
Arable Crop ◽  
On Farm ◽  
The Eu

Nitrate leaching from organic arable crop rotations: effects of location, manure and catch crop

2005 ◽  
Vol 21 (2) ◽  
pp. 181-188 ◽  
Author(s):  
M. Askegaard ◽  
M. Askegaard ◽  
J.E. Olesen ◽  
K. Kristensen
Keyword(s):  
Nitrate Leaching ◽  
Crop Rotations ◽  
Catch Crop ◽  
Arable Crop

Nitrogen balances in organic and conventional arable crop rotations and their relations to nitrogen yield and nitrate leaching losses

2018 ◽  
Vol 265 ◽  
pp. 350-362 ◽  
Author(s):  
Arjun Pandey ◽  
Fucui Li ◽  
Margrethe Askegaard ◽  
Ilse A. Rasmussen ◽  
Jørgen E. Olesen
Keyword(s):  
Nitrate Leaching ◽  
Crop Rotations ◽  
Leaching Losses ◽  
Nitrogen Yield ◽  
Arable Crop

scholarly journals Nitrate leaching from organic and conventional arable crop farms in the Seine Basin (France)

2014 ◽  
Vol 100 (3) ◽  
pp. 285-299 ◽  
Author(s):  
Marie Benoit ◽  
Josette Garnier ◽  
Juliette Anglade ◽  
Gilles Billen
Keyword(s):  
Nitrate Leaching ◽  
Arable Crop

Nitrate leaching in intensive agriculture in Northern France: Effect of farming practices, soils and crop rotations

2005 ◽  
Vol 111 (1-4) ◽  
pp. 292-310 ◽  
Author(s):  
N. Beaudoin ◽  
J.K. Saad ◽  
C. Van Laethem ◽  
J.M. Machet ◽  
J. Maucorps ◽  
...  
Keyword(s):  
Nitrate Leaching ◽  
Crop Rotations ◽  
Intensive Agriculture ◽  
Farming Practices ◽  
Northern France

Soil microarthropod assemblages under different arable crop rotations in Alberta, Canada

2008 ◽  
Vol 38 (1) ◽  
pp. 71-78 ◽  
Author(s):  
G.H.R. Osler ◽  
L. Harrison ◽  
D.K. Kanashiro ◽  
M.J. Clapperton
Keyword(s):  
Crop Rotations ◽  
Arable Crop ◽  
Soil Microarthropod

Supplementary material to "Review of key causes and sources for N<sub>2</sub>O emissions and NO<sub>3</sub>-leaching from organic arable crop rotations"

2018 ◽  
Author(s):  
Sissel Hansen ◽  
Randi Berland Frøseth ◽  
Maria Stenberg ◽  
Jarosław Stalenga ◽  
Jørgen E. Olesen ◽  
...  
Keyword(s):  
Crop Rotations ◽  
Arable Crop ◽  
Supplementary Material
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