Paper · 2016 · Acta Agriculturae Scandinavica Section B - Soil & Plant Science

Residue cover, soil structure, weed infestation and spring cereal yields as affected by tillage and straw management on three soils in Norway

T. Seehusen; I. S. Hofgaard; K. S. Tørresen; et al.

8
claims
16
verbatim quotes
12
citations
2
research areas
—
Not open access

Abstract

Four field trials (spring wheat and oats) were conducted (one on clay soil, one on loam soil and two on silt soil) for three years in important cereal growing districts, to investigate the influence of tillage regimes (ploughing versus reduced tillage in either autumn or spring) and straw management (removed and retained) on plant residue amounts, weed populations, soil structural parameters and cereal yields. The effect of tillage on soil structure varied, mainly due to the short trial period. In general, the amount of small soil aggregates increased with tillage intensity. Reduced soil tillage, and in some cases spring ploughing, gave significantly higher aggregate stability than autumn ploughing, thus providing protection against erosion. However, decreasing tillage intensity increased the amounts of weeds, particularly of Poa annua on silt soil. Straw treatment only slightly affected yields, while effects of tillage varied between both year and location. Reduced tillage, compared to ploughing, gave only small yield differences on loam soil, while it was superior on clay soil and inferior on silt soil. Our results suggest that shallow spring ploughing is a good alternative to autumn ploughing, since it gave comparable yields, better protection against erosion and was nearly as effective against weeds.

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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 8

Associationobservedoriginal resultmeasured

Claim · model-written summary

Small soil aggregates increased with tillage intensity.

Taxon
spring wheat and oatsAvena sativaTriticum aestivume1
Treatment
tillage intensitye0
Outcome
amount of small soil aggregatese0
Direction
increasede0

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

Avena sativa
Avena sativa · TaxonSendelbach ( talk ) · CC BY-SA 3.0 · Wikimedia Commons ↗
Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“the amount of small soil aggregates increased with tillage intensity”

✓ located verbatim in the source · abstract, characters 512–580 · show in text ↑
e1

“spring wheat and oats”

✓ located verbatim in the source · abstract, characters 19–40 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Reduced tillage or spring ploughing sometimes gave higher aggregate stability than autumn ploughing.

Taxon
spring wheat and oatsAvena sativaTriticum aestivume1
Treatment
Reduced soil tillage, and in some cases spring ploughinge0
Outcome
aggregate stabilitye0
Direction
highere0
Comparator
autumn ploughinge0

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

Avena sativa
Avena sativa · TaxonSendelbach ( talk ) · CC BY-SA 3.0 · Wikimedia Commons ↗
Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Reduced soil tillage, and in some cases spring ploughing, gave significantly higher aggregate stability than autumn ploughing”

✓ located verbatim in the source · abstract, characters 582–707 · show in text ↑
e1

“spring wheat and oats”

✓ located verbatim in the source · abstract, characters 19–40 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Decreasing tillage intensity increased weeds, especially Poa annua on silt soil.

Taxon
spring wheat and oatsAvena sativaTriticum aestivume1
Treatment
decreasing tillage intensitye0
Interactor
Poa annuaPoa annuae0weed
Outcome
amounts of weedse0
Direction
increasede0
Setting
silt soile0

Not reportedComparator

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

Avena sativa
Avena sativa · TaxonSendelbach ( talk ) · CC BY-SA 3.0 · Wikimedia Commons ↗
Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗
Poa annua
Poa annua · InteractorKristian Peters -- Fabelfroh 10:06, 7 May 2007 (UTC) · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“decreasing tillage intensity increased the amounts of weeds, particularly of Poa annua on silt soil”

✓ located verbatim in the source · abstract, characters 761–860 · show in text ↑
e1

“spring wheat and oats”

✓ located verbatim in the source · abstract, characters 19–40 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Straw treatment only slightly affected cereal yields.

Taxon
spring wheat and oatsAvena sativaTriticum aestivume1
Treatment
Straw treatmente0
Outcome
yieldse0
Qualifier
only slightlye0

Not reportedComparatorDirection

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

Avena sativa
Avena sativa · TaxonSendelbach ( talk ) · CC BY-SA 3.0 · Wikimedia Commons ↗
Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Straw treatment only slightly affected yields”

✓ located verbatim in the source · abstract, characters 862–907 · show in text ↑
e1

“spring wheat and oats”

✓ located verbatim in the source · abstract, characters 19–40 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Reduced tillage gave small yield differences from ploughing on loam soil.

Taxon
spring wheat and oatsAvena sativaTriticum aestivume1
Treatment
Reduced tillagee0
Outcome
yield differencese0
Comparator
ploughinge0
Setting
loam soile0

Not reportedDirection

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

Avena sativa
Avena sativa · TaxonSendelbach ( talk ) · CC BY-SA 3.0 · Wikimedia Commons ↗
Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Reduced tillage, compared to ploughing, gave only small yield differences on loam soil”

✓ located verbatim in the source · abstract, characters 973–1059 · show in text ↑
e1

“spring wheat and oats”

✓ located verbatim in the source · abstract, characters 19–40 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Reduced tillage was superior to ploughing on clay soil.

Taxon
spring wheat and oatsAvena sativaTriticum aestivume1
Treatment
Reduced tillagee0
Outcome
yield differencese0
Direction
superiore0
Comparator
ploughinge0
Setting
clay soile0

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

Avena sativa
Avena sativa · TaxonSendelbach ( talk ) · CC BY-SA 3.0 · Wikimedia Commons ↗
Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Reduced tillage, compared to ploughing, gave only small yield differences on loam soil, while it was superior on clay soil and inferior on silt soil”

✓ located verbatim in the source · abstract, characters 973–1121 · show in text ↑
e1

“spring wheat and oats”

✓ located verbatim in the source · abstract, characters 19–40 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Reduced tillage was inferior to ploughing on silt soil.

Taxon
spring wheat and oatsAvena sativaTriticum aestivume1
Treatment
Reduced tillagee0
Outcome
yield differencese0
Direction
inferiore0
Comparator
ploughinge0
Setting
silt soile0

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

Avena sativa
Avena sativa · TaxonSendelbach ( talk ) · CC BY-SA 3.0 · Wikimedia Commons ↗
Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Reduced tillage, compared to ploughing, gave only small yield differences on loam soil, while it was superior on clay soil and inferior on silt soil”

✓ located verbatim in the source · abstract, characters 973–1121 · show in text ↑
e1

“spring wheat and oats”

✓ located verbatim in the source · abstract, characters 19–40 · show in text ↑
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

Shallow spring ploughing is recommended as an alternative to autumn ploughing.

Taxon
spring wheat and oatsAvena sativaTriticum aestivume1
Interactor
weedse0weed
Outcome
shallow spring ploughing is a good alternative to autumn ploughinge0

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

Avena sativa
Avena sativa · TaxonSendelbach ( talk ) · CC BY-SA 3.0 · Wikimedia Commons ↗
Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“shallow spring ploughing is a good alternative to autumn ploughing, since it gave comparable yields, better protection against erosion and was nearly as effective against weeds”

✓ located verbatim in the source · abstract, characters 1148–1324 · show in text ↑
e1

“spring wheat and oats”

✓ located verbatim in the source · abstract, characters 19–40 · show in text ↑

tillage · soil: physics · Avena sativa (oats)Positive and negative results

2 papers: 1 positive, 1 negative or no effect

1 in the opposite direction

  1. no effect
See all 2 papers →

tillage · yield · Avena sativa (oats)Positive and negative results

37 papers: 25 positive, 12 negative or no effect

24 papers in the same direction as this paper · 10 in the opposite direction · 2 reporting no difference from an alternative

  1. positive
  2. negative
  3. negative

33 papers more in this group

See all 37 papers →

tillage · soil: physics · Triticum aestivum (wheat)Positive and negative results

142 papers: 118 positive, 24 negative or no effect

117 papers in the same direction as this paper · 22 in the opposite direction · 2 reporting no difference from an alternative

  1. negative
  2. negative
  3. no effect

138 papers more in this group

See all 142 papers →

tillage · yield · Triticum aestivum (wheat)Positive and negative results

1,414 papers: 1,116 positive, 298 negative or no effect

1,115 papers in the same direction as this paper · 257 in the opposite direction · 41 reporting no difference from an alternative

  1. positive
  2. negative
  3. negative

1,410 papers more in this group

See all 1,414 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.