Paper · 1965 · Agronomy Journal

Phosphorus and Nitrogen Utilization by Rape, Flax, and Wheat1

G. J. Racz; M. D. Webber; R. J. Soper; et al.

2
claims
3
verbatim quotes
43
citations
2
research areas
—
Not open access

Abstract

Synopsis Fertilizers containing nitrogen and phosphorus gave a larger increase in yield of rape than of wheat or flax. This appeared to be due to the more rapid uptake and the greater requirement of rape for these elements.

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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 2

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Nitrogen and phosphorus fertilizers gave a larger yield increase in rape than in wheat or flax.

Treatment
Fertilizers containing nitrogen and phosphoruse1
Outcome
yielde1
Direction
larger increasee1
Comparator
wheat or flaxe1

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

Brassica napus
Brassica napus · TaxonDidier Descouens · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e1

“Fertilizers containing nitrogen and phosphorus gave a larger increase in yield of rape than of wheat or flax”

✓ located verbatim in the source · abstract, characters 9–117 · show in text ↑
Mechanismhypothesisoriginal resultbasis n/a

Claim · model-written summary

The larger yield response of rape to N and P fertilizers appeared to be due to its more rapid nutrient uptake and greater requirement for these elements.

Outcome
larger increase in yielde1
Qualifier
the more rapid uptake and the greater requirement of rape for these elementse2

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

Brassica napus
Brassica napus · TaxonDidier Descouens · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e1

“Fertilizers containing nitrogen and phosphorus gave a larger increase in yield of rape than of wheat or flax”

✓ located verbatim in the source · abstract, characters 9–117 · show in text ↑
e2

“the more rapid uptake and the greater requirement of rape for these elements”

✓ located verbatim in the source · abstract, characters 146–222 · show in text ↑

phosphorus · yield · Brassica napus (oilseed rape)Results differ

76 papers: 69 positive, 7 negative or no effect

68 papers in the same direction as this paper · 6 in the opposite direction · 1 reporting no difference from an alternative

  1. positive
  2. negative
  3. negative

72 papers more in this group

See all 76 papers →

nitrogen · yield · Brassica napus (oilseed rape)Positive and negative results

239 papers: 198 positive, 41 negative or no effect

197 papers in the same direction as this paper · 34 in the opposite direction · 7 reporting no difference from an alternative

  1. no effect
  2. negative
  3. positive

235 papers more in this group

See all 239 papers →

fertilization · yield · Brassica napus (oilseed rape)Positive and negative results

378 papers: 337 positive, 41 negative or no effect

336 papers in the same direction as this paper · 37 in the opposite direction · 4 reporting no difference from an alternative

  1. positive
  2. negative
  3. no effect

374 papers more in this group

See all 378 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.