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Cited by 35Agronomic Practices and Intercropping SystemsSoil Carbon and Nitrogen DynamicsAgricultural Science and Fertilization

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Cover crop and cereal straw management influence the residual nitrogen effect

Fontaine, Doline, Eriksen, Jørgen, Sørensen, Peter·2020·European Journal of Agronomy
DOI 10.1016/j.eja.2020.126100
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Abstract

Cover crops (CC) may play an essential role in the recycling of nutrients in organic farming systems with cereals. Harvest time of cereals and management of straw in the field can affect the growth of CC and subsequent nitrogen (N) fertiliser replacement value (NFRV) in the following crop. This study investigates 1) the effect of harvest time, 2) cutting height of straw and 3) straw removal from the main crop on CC growth, composition, uptake and NFRV in the following crop and 4) the effect of CC harvest in autumn on the NFRV in the succeeding crop.A CC mixture of mainly red clover, with chicory and ryegrass was sown under a spring barley crop in 2017, and replicated in 2018. Four strategies of barley harvest were conducted: 1) early harvest as whole crop or 2) early harvest of the upper parts only, 3) at maturity with straw removed or 4) at maturity with straw left on the field surface. Subsequently, CC and high stubbles of left straw were harvested and removed in autumn in half of the field replicates. The residual effect was measured in spring barley in the succeeding year.The CC aboveground biomass dominated by the clover had an N uptake for both years of 40−77 kg N ha⁻¹. Variability was significant between years but not caused by the harvest time or by straw management. In the succeeding year, residues from barley and CC could replace 61−85 kg N ha⁻¹ of mineral N fertiliser, which were mostly derived from CC roots and stubble. High straw stubble left (40 cm length) signi…

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Metadata

Authors
Fontaine, D., Eriksen, J., & Sørensen, P.
Affiliations
Aarhus University (DK)
Corresponding author
Fontaine, Doline
ORCID
Venue
European Journal of Agronomy
Publisher
Elsevier BV
Published
2020-08
Volume
118
Pages
126100
ISSN
1161-0301 (ISSN-L)
DOI
10.1016/j.eja.2020.126100
OpenAlex
W3027230005
Cited by
35
References
0
Citations by year
2026: 1 · 2025: 3 · 2024: 6 · 2023: 10 · 2022: 8 · 2021: 5 · 2020: 2
FWCI
7.79
Type
journal article
Language
en
Open access
closed
Licence
Locations
  • European Journal of Agronomy (publishedVersion)
  • Organic Eprints (International Centre for Research in Organic Food Systems, and Research Institute of Organic Agriculture) (submittedVersion)
Funders
Miljø- og Fødevareministeriet
Topics
  • Life Sciences › Agricultural and Biological Sciences › Agronomy and Crop Science › Agronomic Practices and Intercropping Systems
  • Life Sciences › Agricultural and Biological Sciences › Soil Science › Soil Carbon and Nitrogen Dynamics
  • Life Sciences › Agricultural and Biological Sciences › Soil Science › Agricultural Science and Fertilization
Keywords
cover crops, residual nitrogen effect, red clover, chicory, ryegrass, spring barley, harvest time, organic farming, nutrient cycling

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