Grass-clover undersowing affects nitrogen dynamics in a grain legume–cereal arable cropping system

Publication: Research - peer-reviewJournal article – Annual report year: 2012

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Grass-clover undersowing affects nitrogen dynamics in a grain legume–cereal arable cropping system. / Hauggaard-Nielsen, Henrik; Mundus, Simon; Jensen, Erik Steen.

In: Field Crops Research, Vol. 136, 2012, p. 23-31.

Publication: Research - peer-reviewJournal article – Annual report year: 2012

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Author

Hauggaard-Nielsen, Henrik; Mundus, Simon; Jensen, Erik Steen / Grass-clover undersowing affects nitrogen dynamics in a grain legume–cereal arable cropping system.

In: Field Crops Research, Vol. 136, 2012, p. 23-31.

Publication: Research - peer-reviewJournal article – Annual report year: 2012

Bibtex

@article{170e55c39f9e401da576c7e33febbde6,
title = "Grass-clover undersowing affects nitrogen dynamics in a grain legume–cereal arable cropping system",
keywords = "Cropping system, Symbiotic N2 fixation, Precrop effect, Residual N effect, Rotation",
author = "Henrik Hauggaard-Nielsen and Simon Mundus and Jensen, {Erik Steen}",
year = "2012",
doi = "10.1016/j.fcr.2012.07.001",
volume = "136",
pages = "23--31",
journal = "Field Crops Research",
issn = "0378-4290",
publisher = "Elsevier BV",

}

RIS

TY - JOUR

T1 - Grass-clover undersowing affects nitrogen dynamics in a grain legume–cereal arable cropping system

AU - Hauggaard-Nielsen,Henrik

AU - Mundus,Simon

AU - Jensen,Erik Steen

PY - 2012

Y1 - 2012

N2 - A field experiment was carried out in an arable organic cropping system and included a sequence with sole cropped fababean (Vicia faba L.), lupin (Lupinus angustifolius L.), pea (Pisum sativum L.), oat (Avena sativa L.) and pea–oat intercropping with or without an undersown perennial ryegrass (Lolium perenne L.) – white clover (Trifolium repens L.) catch crop followed by a first crop of spring wheat (Triticum aestivum L.) and second crop of winter triticale (Triticale hexaploide L.). The rotation sequence was repeated twice. Natural 15N abundance techniques were used to determine grain legume N2 fixation and 15N labeling technique to determine the fate of pea and oat residue N recovery in the subsequent crop. The subsequent spring wheat and winter triticale crop yields were not significantly affected by the previous main crop, but a significant effect of catch crop undersowing was observed. A higher soil mineral N content in the soil profile without undersown grass-clover increased the spring wheat yield. This effect was circumvented in the subsequent winter triticale, where yields in the treatments with catch crops undersown were significantly greater. The grass-clover catch crop after grain legumes had a higher grass proportion before incorporation as compared to grass-clover after oat, which had the greatest clover proportion. The dynamic response of interspecific interactions in the catch crop to the soil mineral N levels is moderating the preceding effect of main crops in the subsequent cereal – and sometimes to a higher degree than the main crop effect. For research involving rotation principles it is recommended to evaluate cumulative effects over several years and not only single seasons.

AB - A field experiment was carried out in an arable organic cropping system and included a sequence with sole cropped fababean (Vicia faba L.), lupin (Lupinus angustifolius L.), pea (Pisum sativum L.), oat (Avena sativa L.) and pea–oat intercropping with or without an undersown perennial ryegrass (Lolium perenne L.) – white clover (Trifolium repens L.) catch crop followed by a first crop of spring wheat (Triticum aestivum L.) and second crop of winter triticale (Triticale hexaploide L.). The rotation sequence was repeated twice. Natural 15N abundance techniques were used to determine grain legume N2 fixation and 15N labeling technique to determine the fate of pea and oat residue N recovery in the subsequent crop. The subsequent spring wheat and winter triticale crop yields were not significantly affected by the previous main crop, but a significant effect of catch crop undersowing was observed. A higher soil mineral N content in the soil profile without undersown grass-clover increased the spring wheat yield. This effect was circumvented in the subsequent winter triticale, where yields in the treatments with catch crops undersown were significantly greater. The grass-clover catch crop after grain legumes had a higher grass proportion before incorporation as compared to grass-clover after oat, which had the greatest clover proportion. The dynamic response of interspecific interactions in the catch crop to the soil mineral N levels is moderating the preceding effect of main crops in the subsequent cereal – and sometimes to a higher degree than the main crop effect. For research involving rotation principles it is recommended to evaluate cumulative effects over several years and not only single seasons.

KW - Cropping system

KW - Symbiotic N2 fixation

KW - Precrop effect

KW - Residual N effect

KW - Rotation

U2 - 10.1016/j.fcr.2012.07.001

DO - 10.1016/j.fcr.2012.07.001

M3 - Journal article

VL - 136

SP - 23

EP - 31

JO - Field Crops Research

T2 - Field Crops Research

JF - Field Crops Research

SN - 0378-4290

ER -