Paper · 2004 · Tropical Science

Effect of nitrogen and phosphorus combination on late blight disease and potato yield

CM Agu

4
claims
6
verbatim quotes
3
citations
2
research areas
—
Not open access

Abstract

Abstract Response of potato late blight incidence to nitrogen depended on phosphorus application. The disease severity increased with phosphorus rate. The highest potato yield and least late blight severity were with a high nitrogen rate and half as much phosphorus. Copyright © 2004 Whurr Publishers Ltd

Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. 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

Associationobservedoriginal resultmeasured

Claim · model-written summary

The response of potato late blight incidence to nitrogen depended on phosphorus application.

Treatment
nitrogene0
Outcome
potato late blight incidencee0

Not reportedDirection

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

e0

“Response of potato late blight incidence to nitrogen depended on phosphorus application”

✓ located verbatim in the source · abstract, characters 9–96 · show in text ↑
Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

Late blight severity increased with phosphorus rate.

Treatment
phosphorus ratee0
Outcome
disease severitye0
Direction
increasede0

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

e0

“The disease severity increased with phosphorus rate”

✓ located verbatim in the source · abstract, characters 98–149 · show in text ↑
t0

“potato”

✓ located verbatim in the source · title, characters 73–79 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Potato yield was highest with high nitrogen and half as much phosphorus.

Treatment
a high nitrogen rate and half as much phosphoruse0
Outcome
potato yielde0
Direction
higheste0

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

e0

“The highest potato yield and least late blight severity were with a high nitrogen rate and half as much phosphorus”

✓ located verbatim in the source · abstract, characters 151–265 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Late blight severity was least with high nitrogen and half as much phosphorus.

Treatment
a high nitrogen rate and half as much phosphoruse0
Outcome
late blight severitye0
Direction
leaste0

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

e0

“The highest potato yield and least late blight severity were with a high nitrogen rate and half as much phosphorus”

✓ located verbatim in the source · abstract, characters 151–265 · show in text ↑
t0

“potato”

✓ located verbatim in the source · title, characters 73–79 · show in text ↑

phosphorus · yield · Solanum tuberosum (potato)Results differ

51 papers: 42 positive, 9 negative or no effect

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

  1. no effect
  2. no effect
  3. no effect

47 papers more in this group

See all 51 papers →

nitrogen · yield · Solanum tuberosum (potato)Results differ

132 papers: 109 positive, 23 negative or no effect

108 papers in the same direction as this paper · 20 in the opposite direction · 3 reporting no difference from an alternative

  1. no effect
  2. negative
  3. negative

128 papers more in this group

See all 132 papers →

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 →

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

16 papers: 12 positive, 4 negative or no effect

11 papers in the same direction as this paper · 4 in the opposite direction

  1. negative
  2. negative
  3. negative

12 papers more in this group

See all 16 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.