Paper · 1970 · Plant Pathology

Contrasting Effects of Nitrogen and Phosphorus on Potato Tuber Blight

M. Herlihy

3
claims
7
verbatim quotes
7
citations
2
research areas
—
Not open access

Abstract

SUMMARY Statistically significant effects of nitrogen and phosphorus on the incidence of potato tuber blight were detected. Quantitative data for three sites where the effect was significant were compared with results from combined analyses of 15 sites. Nitrogen increased the proportion of blighted tubers. Phosphorus had the opposite effect, the biggest differences occurring on sites with higher than average levels of infection.

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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 3

Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Nitrogen increased the proportion of blighted potato tubers, a statistically significant effect.

Treatment
Nitrogene1
Outcome
proportion of blighted tuberse1
Direction
increasede1

Not reportedComparator

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

Solanum tuberosum
Solanum tuberosum · TaxonScott Bauer, USDA ARS · Public domain · Wikimedia Commons ↗

Verbatim

t0

“Potato Tuber Blight”

✓ located verbatim in the source · title, characters 50–69 · show in text ↑
e1

“Nitrogen increased the proportion of blighted tubers”

✓ located verbatim in the source · abstract, characters 254–306 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Phosphorus had the opposite effect to nitrogen on potato tuber blight incidence, reducing it, a statistically significant effect.

Treatment
Phosphoruse2
Outcome
incidence of potato tuber blighte1
Direction
decreaseinferrede2

Not reportedComparator

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

Solanum tuberosum
Solanum tuberosum · TaxonScott Bauer, USDA ARS · Public domain · Wikimedia Commons ↗

Verbatim

t0

“Potato Tuber Blight”

✓ located verbatim in the source · title, characters 50–69 · show in text ↑
e1

“incidence of potato tuber blight”

✓ located verbatim in the source · abstract, characters 76–108 · show in text ↑
e2

“Phosphorus had the opposite effect”

✓ located verbatim in the source · abstract, characters 308–342 · show in text ↑
Associationobservedoriginal resultmeasured

Claim · model-written summary

The biggest differences between phosphorus and nitrogen effects occurred on sites with higher than average levels of infection.

Treatment
Phosphoruse1
Outcome
differencese1
Direction
biggeste1
Setting
sites with higher than average levels of infectione1

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

Solanum tuberosum
Solanum tuberosum · TaxonScott Bauer, USDA ARS · Public domain · Wikimedia Commons ↗

Verbatim

t0

“Potato Tuber Blight”

✓ located verbatim in the source · title, characters 50–69 · show in text ↑
e1

“Phosphorus had the opposite effect, the biggest differences occurring on sites with higher than average levels of infection”

✓ located verbatim in the source · abstract, characters 308–431 · show in text ↑

phosphorus · disease · Solanum tuberosum (potato)Positive and negative results

7 papers: 4 positive, 3 negative or no effect

3 papers in the same direction as this paper · 3 in the opposite direction

  1. no effect
  2. negative
  3. negative

3 papers more in this group

See all 7 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.