Paper · 2021 · Agronomy

Nitrogen Yields and Biological Nitrogen Fixation of Winter Grain Legumes

Reinhard W. Neugschwandtner; Alexander Bernhuber; Stefan Kammlander; et al.

12
claims
19
verbatim quotes
23
citations
2
research areas
✓
Open access · cc-by

Abstract

Grain legumes are valuable sources of protein and contribute to the diversification and sustainability of agricultural systems. Shifting the sowing date from spring to autumn is a strategy to address low yields of spring grain legumes under conditions of climate change. A two-year field experiment was conducted under Pannonian climate conditions in eastern Austria to assess the nitrogen yield and biological N2 fixation of winter peas and winter faba beans compared to their spring forms. The grain nitrogen yields of winter peas and winter faba beans were 1.83-fold and 1.35-fold higher compared to their spring forms, respectively, with a higher value for winter peas. This was mainly due to higher grain yields of winter legumes, as winter faba beans had a 1.06-fold higher grain nitrogen concentration than spring faba bean. Soil mineral nitrate after harvest was similar for all grain legumes, with by 2.85- and 2.92-fold higher values for peas and faba beans than for cereals, respectively. The N2 fixation of winter peas and winter faba beans were 3.90-fold and 2.28-fold higher compared to their spring forms, with winter peas having a 1.60-fold higher N2 fixation than winter faba beans. The negative nitrogen balance of winter peas was smaller than that of winter faba beans as they demonstrated the ability to overcompensate for higher nitrogen removal with grain through higher N2 fixation. The cultivation of winter grain legumes, especially winter peas, can be recommended under Pannonian climate conditions as they achieve high nitrogen yields and high levels of N2 fixation.

Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗

The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.

Claims 12

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Grain nitrogen yield of winter peas was 1.83-fold higher than that of their spring forms.

Taxon
winter peasLathyrus oleraceuse1
Treatment
Shifting the sowing date from spring to autumne2
Outcome
grain nitrogen yieldse1
Direction
highere1
Value
1.83-folde1
Comparator
their spring formse1

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Lathyrus oleraceus
Lathyrus oleraceus · TaxonRenee Comet (photographer) AV Number: AV-9400-4164 · Public domain · Wikimedia Commons ↗

Verbatim

e1

“The grain nitrogen yields of winter peas and winter faba beans were 1.83-fold and 1.35-fold higher compared to their spring forms, respectively”

✓ located verbatim in the source · abstract, characters 492–635 · show in text ↑
e2

“Shifting the sowing date from spring to autumn”

✓ located verbatim in the source · abstract, characters 128–174 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Grain nitrogen yield of winter faba beans was 1.35-fold higher than that of their spring forms.

Taxon
winter faba beansVicia fabae1
Treatment
Shifting the sowing date from spring to autumne2
Outcome
grain nitrogen yieldse1
Direction
highere1
Value
1.35-folde1
Comparator
their spring formse1

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Vicia faba
Vicia faba · TaxonRahmaziz · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e1

“The grain nitrogen yields of winter peas and winter faba beans were 1.83-fold and 1.35-fold higher compared to their spring forms, respectively”

✓ located verbatim in the source · abstract, characters 492–635 · show in text ↑
e2

“Shifting the sowing date from spring to autumn”

✓ located verbatim in the source · abstract, characters 128–174 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Winter legumes had higher grain yields than their spring forms.

Taxon
winter legumese2
Treatment
Shifting the sowing date from spring to autumne3
Outcome
grain yieldse2
Direction
highere2
Comparator
their spring formse1

Verbatim

e1

“The grain nitrogen yields of winter peas and winter faba beans were 1.83-fold and 1.35-fold higher compared to their spring forms, respectively”

✓ located verbatim in the source · abstract, characters 492–635 · show in text ↑
e2

“This was mainly due to higher grain yields of winter legumes”

✓ located verbatim in the source · abstract, characters 674–734 · show in text ↑
e3

“Shifting the sowing date from spring to autumn”

✓ located verbatim in the source · abstract, characters 128–174 · show in text ↑
Mechanismauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

The higher grain nitrogen yield of winter legumes was mainly due to their higher grain yields.

Taxon
winter legumese2
Outcome
grain nitrogen yieldse1
Qualifier
mainly due to higher grain yields of winter legumese2

Verbatim

e1

“The grain nitrogen yields of winter peas and winter faba beans were 1.83-fold and 1.35-fold higher compared to their spring forms, respectively”

✓ located verbatim in the source · abstract, characters 492–635 · show in text ↑
e2

“This was mainly due to higher grain yields of winter legumes”

✓ located verbatim in the source · abstract, characters 674–734 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Grain nitrogen concentration of winter faba beans was 1.06-fold higher than that of spring faba bean.

Taxon
winter faba beansVicia fabae4
Treatment
Shifting the sowing date from spring to autumne3
Outcome
grain nitrogen concentratione4
Direction
highere4
Value
1.06-folde4
Comparator
spring faba beane4

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Vicia faba
Vicia faba · TaxonRahmaziz · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e4

“winter faba beans had a 1.06-fold higher grain nitrogen concentration than spring faba bean”

✓ located verbatim in the source · abstract, characters 739–830 · show in text ↑
e3

“Shifting the sowing date from spring to autumn”

✓ located verbatim in the source · abstract, characters 128–174 · show in text ↑
Observationobservedoriginal resultno effectmeasured

Claim · model-written summary

Soil mineral nitrate after harvest was similar for all grain legumes.

Taxon
grain legumese5
Outcome
Soil mineral nitrate after harveste5

Verbatim

e5

“Soil mineral nitrate after harvest was similar for all grain legumes, with by 2.85- and 2.92-fold higher values for peas and faba beans than for cereals, respectively”

✓ located verbatim in the source · abstract, characters 832–998 · show in text ↑
Associationobservedoriginal resultmeasured

Claim · model-written summary

Soil mineral nitrate after harvest was 2.85-fold higher under peas than under cereals.

Outcome
Soil mineral nitrate after harveste5
Direction
highere5
Value
2.85e5
Qualifier
folde5
Comparator
cerealse5

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Lathyrus oleraceus
Lathyrus oleraceus · TaxonRenee Comet (photographer) AV Number: AV-9400-4164 · Public domain · Wikimedia Commons ↗

Verbatim

e5

“Soil mineral nitrate after harvest was similar for all grain legumes, with by 2.85- and 2.92-fold higher values for peas and faba beans than for cereals, respectively”

✓ located verbatim in the source · abstract, characters 832–998 · show in text ↑
Associationobservedoriginal resultmeasured

Claim · model-written summary

Soil mineral nitrate after harvest was 2.92-fold higher under faba beans than under cereals.

Taxon
faba beansVicia fabae5
Outcome
Soil mineral nitrate after harveste5
Direction
highere5
Value
2.92e5
Qualifier
folde5
Comparator
cerealse5

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Vicia faba
Vicia faba · TaxonRahmaziz · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e5

“Soil mineral nitrate after harvest was similar for all grain legumes, with by 2.85- and 2.92-fold higher values for peas and faba beans than for cereals, respectively”

✓ located verbatim in the source · abstract, characters 832–998 · show in text ↑
Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

N2 fixation of winter peas was 1.60-fold higher than that of winter faba beans.

Taxon
winter peasLathyrus oleraceuse1
Outcome
N2 fixatione1
Direction
highere1
Value
1.60-folde1
Comparator
winter faba beanse1

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Lathyrus oleraceus
Lathyrus oleraceus · TaxonRenee Comet (photographer) AV Number: AV-9400-4164 · Public domain · Wikimedia Commons ↗

Verbatim

e1

“winter peas having a 1.60-fold higher N2 fixation than winter faba beans”

✓ located verbatim in the source · abstract, characters 1126–1198 · show in text ↑
Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

The negative nitrogen balance of winter peas was smaller than that of winter faba beans.

Taxon
winter peasLathyrus oleraceuse1
Outcome
negative nitrogen balancee1
Direction
smallere1
Comparator
winter faba beanse1

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Lathyrus oleraceus
Lathyrus oleraceus · TaxonRenee Comet (photographer) AV Number: AV-9400-4164 · Public domain · Wikimedia Commons ↗

Verbatim

e1

“The negative nitrogen balance of winter peas was smaller than that of winter faba beans”

✓ located verbatim in the source · abstract, characters 1200–1287 · show in text ↑
Mechanismauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

Winter peas overcompensated for higher nitrogen removal with grain through higher N2 fixation.

Taxon
winter peasLathyrus oleraceuse1
Outcome
overcompensate for higher nitrogen removal with graine2
Qualifier
through higher N2 fixatione2

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Lathyrus oleraceus
Lathyrus oleraceus · TaxonRenee Comet (photographer) AV Number: AV-9400-4164 · Public domain · Wikimedia Commons ↗

Verbatim

e1

“The negative nitrogen balance of winter peas was smaller than that of winter faba beans”

✓ located verbatim in the source · abstract, characters 1200–1287 · show in text ↑
e2

“as they demonstrated the ability to overcompensate for higher nitrogen removal with grain through higher N2 fixation”

✓ located verbatim in the source · abstract, characters 1288–1404 · show in text ↑
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

Cultivation of winter grain legumes, especially winter peas, can be recommended under Pannonian climate conditions.

Taxon
winter grain legumese1
Outcome
cultivation of winter grain legumese1
Setting
Pannonian climate conditionse1

Verbatim

e1

“The cultivation of winter grain legumes, especially winter peas, can be recommended under Pannonian climate conditions as they achieve high nitrogen yields and high levels of N2 fixation”

✓ located verbatim in the source · abstract, characters 1406–1592 · show in text ↑

sowing time · yield · Vicia faba (faba bean)Positive and negative results

28 papers: 19 positive, 9 negative or no effect

18 papers in the same direction as this paper · 8 in the opposite direction · 1 reporting no difference from an alternative

  1. negative
  2. negative
  3. negative

24 papers more in this group

See all 28 papers →

sowing time · yield · Lathyrus oleraceus (pea)Positive and negative results

36 papers: 25 positive, 11 negative or no effect

24 papers in the same direction as this paper · 11 in the opposite direction

  1. negative
  2. no effect
  3. negative

32 papers more in this group

See all 36 papers →

sowing time · nutrient: content · Vicia faba (faba bean)Results agree

2 papers: 2 positive, 0 negative or no effect

1 paper in the same direction as this paper

  1. positive
See all 2 papers →

Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.