Paper · 2015 · Kansas Agricultural Experiment Station Research Reports

Tillage and Nitrogen Placement Effects on Yields in a Short-Season Corn/Wheat/Double-Crop Soybean Rotation

D. W. Sweeney

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claims
5
verbatim quotes
0
citations
1
research areas
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Open access · cc-by

Abstract

Overall in 2014, adding nitrogen (N) improved average wheat yields, but different N placement methods resulted in similar yields. Double-crop soybean yields were unaffected by tillage or the residual from N treatments that were applied to the previous wheat crop.

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 4

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Adding nitrogen improved average wheat yield.

Treatment
adding nitrogen (N)e0
Outcome
wheat yieldse0
Direction
improvede0

Not reportedComparator

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“adding nitrogen (N) improved average wheat yields”

✓ located verbatim in the source · abstract, characters 17–66 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Different nitrogen placement methods gave similar wheat yields.

Treatment
different N placement methodse0
Outcome
yieldse0
Direction
similare0

Not reportedComparator

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“different N placement methods resulted in similar yields”

✓ located verbatim in the source · abstract, characters 72–128 · show in text ↑
t0

“Wheat”

✓ located verbatim in the source · title, characters 72–77 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Tillage did not affect double-crop soybean yield.

Taxon
soybeanGlycine maxe0
Treatment
tillagee0
Outcome
Double-crop soybean yieldse0
Direction
unaffectede0

Not reportedComparator

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“Double-crop soybean yields were unaffected by tillage”

✓ located verbatim in the source · abstract, characters 130–183 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Residual nitrogen treatment of the prior wheat crop did not affect double-crop soybean yield.

Taxon
soybeanGlycine maxe0
Treatment
residual from N treatments that were applied to the previous wheat crope0
Outcome
Double-crop soybean yieldse0
Direction
unaffectede0

Not reportedComparator

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“Double-crop soybean yields were unaffected by tillage or the residual from N treatments that were applied to the previous wheat crop”

✓ located verbatim in the source · abstract, characters 130–262 · show in text ↑

Triticum aestivum · yield · Glycine max (soybean)Positive and negative results

57 papers: 36 positive, 21 negative or no effect

20 papers in the same direction as this paper · 36 in the opposite direction

  1. positive
  2. positive
  3. positive

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tillage · yield · Glycine max (soybean)Positive and negative results

390 papers: 264 positive, 126 negative or no effect

125 papers in the same direction as this paper · 264 in the opposite direction

  1. positive
  2. positive
  3. positive

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nitrogen · yield · Glycine max (soybean)Positive and negative results

416 papers: 318 positive, 98 negative or no effect

97 papers in the same direction as this paper · 318 in the opposite direction

  1. positive
  2. positive
  3. positive

412 papers more in this group

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

2,061 papers: 1,737 positive, 324 negative or no effect

1,736 papers in the same direction as this paper · 285 in the opposite direction · 39 reporting no difference from an alternative

  1. negative
  2. negative
  3. negative

2,057 papers more in this group

See all 2,061 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.