Analysis of the significant drop in protein content in Danish grain crops from 1990-2015 based on N-response in fertilizer trials

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Analysis of the significant drop in protein content in Danish grain crops from 1990-2015 based on N-response in fertilizer trials. / Styczen, Merete Elisabeth; Abrahamsen, Per; Hansen, Søren; Knudsen, Leif.

In: European Journal of Agronomy, Vol. 115, 126013, 2020.

Research output: Contribution to journalJournal articleResearchpeer-review

Harvard

Styczen, ME, Abrahamsen, P, Hansen, S & Knudsen, L 2020, 'Analysis of the significant drop in protein content in Danish grain crops from 1990-2015 based on N-response in fertilizer trials', European Journal of Agronomy, vol. 115, 126013. https://doi.org/10.1016/j.eja.2020.126013

APA

Styczen, M. E., Abrahamsen, P., Hansen, S., & Knudsen, L. (2020). Analysis of the significant drop in protein content in Danish grain crops from 1990-2015 based on N-response in fertilizer trials. European Journal of Agronomy, 115, [126013]. https://doi.org/10.1016/j.eja.2020.126013

Vancouver

Styczen ME, Abrahamsen P, Hansen S, Knudsen L. Analysis of the significant drop in protein content in Danish grain crops from 1990-2015 based on N-response in fertilizer trials. European Journal of Agronomy. 2020;115. 126013. https://doi.org/10.1016/j.eja.2020.126013

Author

Styczen, Merete Elisabeth ; Abrahamsen, Per ; Hansen, Søren ; Knudsen, Leif. / Analysis of the significant drop in protein content in Danish grain crops from 1990-2015 based on N-response in fertilizer trials. In: European Journal of Agronomy. 2020 ; Vol. 115.

Bibtex

@article{75a40e2c417b40139345995c910d2082,
title = "Analysis of the significant drop in protein content in Danish grain crops from 1990-2015 based on N-response in fertilizer trials",
abstract = "A significant drop of 2.4-2.9 percentage-points ({\%}-p) in crude protein content (on dry matter basis) in Danish grain crops was observed from around 1990 to 2015. The aim of the analysis was to quantify the effect of the change in N-response of varieties of winter wheat (WW) and spring barley (SB) under farmers’ conditions based on approx. 1000 fertilizer trials with WW and 500 with SB carried out in farmers’ fields from 1987 to 2015. Results indicated that for WW receiving 129-190 kg N/ha, DM yield increased 0.8-0.9 Mg/ha. The amount of harvested N in grain increased 5-11 kg N/ha, and {\%} N in grain dropped by 0.1-0.05 {\%}-points; the largest drop was found for low N-additions. For SB, receiving 93-129 kg N/ha, DM yield increased by 0.9-1.1 Mg/ha. The amount of harvested N in grain increased by 4-6 kg while the N {\%} in grain dropped 0.2-0.24 {\%}-points. For both crops, the effect of plant breeding is likely to be confounded with the effect of increased CO2. Adding up effects of changed N-response and fertilizer rates only explained part of the observed reduction in crude protein content.",
keywords = "Det Natur- og Biovidenskabelige Fakultet, Winter wheat, spring barley, Protein content, Plant breeding, Fertilization",
author = "Styczen, {Merete Elisabeth} and Per Abrahamsen and S{\o}ren Hansen and Leif Knudsen",
year = "2020",
doi = "10.1016/j.eja.2020.126013",
language = "Dansk",
volume = "115",
journal = "European Journal of Agronomy",
issn = "1161-0301",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Analysis of the significant drop in protein content in Danish grain crops from 1990-2015 based on N-response in fertilizer trials

AU - Styczen, Merete Elisabeth

AU - Abrahamsen, Per

AU - Hansen, Søren

AU - Knudsen, Leif

PY - 2020

Y1 - 2020

N2 - A significant drop of 2.4-2.9 percentage-points (%-p) in crude protein content (on dry matter basis) in Danish grain crops was observed from around 1990 to 2015. The aim of the analysis was to quantify the effect of the change in N-response of varieties of winter wheat (WW) and spring barley (SB) under farmers’ conditions based on approx. 1000 fertilizer trials with WW and 500 with SB carried out in farmers’ fields from 1987 to 2015. Results indicated that for WW receiving 129-190 kg N/ha, DM yield increased 0.8-0.9 Mg/ha. The amount of harvested N in grain increased 5-11 kg N/ha, and % N in grain dropped by 0.1-0.05 %-points; the largest drop was found for low N-additions. For SB, receiving 93-129 kg N/ha, DM yield increased by 0.9-1.1 Mg/ha. The amount of harvested N in grain increased by 4-6 kg while the N % in grain dropped 0.2-0.24 %-points. For both crops, the effect of plant breeding is likely to be confounded with the effect of increased CO2. Adding up effects of changed N-response and fertilizer rates only explained part of the observed reduction in crude protein content.

AB - A significant drop of 2.4-2.9 percentage-points (%-p) in crude protein content (on dry matter basis) in Danish grain crops was observed from around 1990 to 2015. The aim of the analysis was to quantify the effect of the change in N-response of varieties of winter wheat (WW) and spring barley (SB) under farmers’ conditions based on approx. 1000 fertilizer trials with WW and 500 with SB carried out in farmers’ fields from 1987 to 2015. Results indicated that for WW receiving 129-190 kg N/ha, DM yield increased 0.8-0.9 Mg/ha. The amount of harvested N in grain increased 5-11 kg N/ha, and % N in grain dropped by 0.1-0.05 %-points; the largest drop was found for low N-additions. For SB, receiving 93-129 kg N/ha, DM yield increased by 0.9-1.1 Mg/ha. The amount of harvested N in grain increased by 4-6 kg while the N % in grain dropped 0.2-0.24 %-points. For both crops, the effect of plant breeding is likely to be confounded with the effect of increased CO2. Adding up effects of changed N-response and fertilizer rates only explained part of the observed reduction in crude protein content.

KW - Det Natur- og Biovidenskabelige Fakultet

KW - Winter wheat

KW - spring barley

KW - Protein content

KW - Plant breeding

KW - Fertilization

U2 - 10.1016/j.eja.2020.126013

DO - 10.1016/j.eja.2020.126013

M3 - Tidsskriftartikel

VL - 115

JO - European Journal of Agronomy

JF - European Journal of Agronomy

SN - 1161-0301

M1 - 126013

ER -

ID: 237243939