Paper · 1971 · Agronomy Journal

Comparison of Fall, Winter, or Spring N‐P‐K Fertilizer Applications for Corn and Cotton1

Fred C. Boswell

6
claims
13
verbatim quotes
4
citations
1
research areas
—
Not open access

Abstract

Abstract Field studies compared yields between plow‐down and sidedress N and fall, winter, and spring applied P‐K for corn ( Zea mays L.) on Piedmont soil and corn and cotton ( Gossypium hirsutum L.) on Coastal Plains acid soils. There were no significant yield differences for the Piedmont soil. For the Coastal Plain soil over a 3‐year period, winter‐ and spring‐applied P and K were superior to fall applications and sidedress N was better than plow‐down N for corn production. Similar N responses were obtained for cotton. However, there was no difference between the fall‐ and winter‐applied P and K, but the spring application yielded significantly (P—.01) more lint cotton than the fall or winter treatments.

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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 6

Observationobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

No significant corn yield differences were found for the Piedmont soil.

Outcome
yielde1
Setting
Piedmont soile0

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“corn ( Zea mays L.) on Piedmont soil”

✓ located verbatim in the source · abstract, characters 118–154 · show in text ↑
e1

“There were no significant yield differences for the Piedmont soil”

✓ located verbatim in the source · abstract, characters 230–295 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Over three years on the Coastal Plain soil, winter- and spring-applied P and K were superior to fall applications for corn.

Treatment
winter‐ and spring‐applied P and Ke2
Outcome
yieldse3
Direction
superiore2
Comparator
fall applicationse2
Setting
Coastal Plain soile4

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“corn ( Zea mays L.) on Piedmont soil”

✓ located verbatim in the source · abstract, characters 118–154 · show in text ↑
e2

“winter‐ and spring‐applied P and K were superior to fall applications”

✓ located verbatim in the source · abstract, characters 346–415 · show in text ↑
e3

“Field studies compared yields between plow‐down and sidedress N”

✓ located verbatim in the source · abstract, characters 9–72 · show in text ↑
e4

“For the Coastal Plain soil over a 3‐year period”

✓ located verbatim in the source · abstract, characters 297–344 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Sidedress N was better than plow-down N for corn production.

Treatment
sidedress Ne5
Outcome
corn productione5
Direction
bettere5
Comparator
plow‐down Ne5

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“corn ( Zea mays L.) on Piedmont soil”

✓ located verbatim in the source · abstract, characters 118–154 · show in text ↑
e5

“sidedress N was better than plow‐down N for corn production”

✓ located verbatim in the source · abstract, characters 420–479 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Cotton showed similar N responses to sidedress N and plow-down N.

Treatment
sidedress Ne5
Outcome
N responsese6
Direction
Similare6
Comparator
plow‐down Ne5

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

Gossypium hirsutum
Gossypium hirsutum · TaxonChriKo · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e5

“sidedress N was better than plow‐down N for corn production”

✓ located verbatim in the source · abstract, characters 420–479 · show in text ↑
e6

“Similar N responses were obtained for cotton”

✓ located verbatim in the source · abstract, characters 481–525 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

There was no difference in cotton lint yield between fall- and winter-applied P and K.

Treatment
winter‐applied P and Ke1
Outcome
lint cottone2
Direction
no differencee1
Comparator
falle1

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

Gossypium hirsutum
Gossypium hirsutum · TaxonChriKo · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e1

“there was no difference between the fall‐ and winter‐applied P and K”

✓ located verbatim in the source · abstract, characters 536–604 · show in text ↑
e2

“the spring application yielded significantly (P—.01) more lint cotton than the fall or winter treatments”

✓ located verbatim in the source · abstract, characters 610–714 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Spring-applied P and K gave significantly more cotton lint than fall or winter applications.

Treatment
spring applicatione1
Outcome
lint cottone1
Direction
moree1
Qualifier
P—.01e1
Comparator
fall or winter treatmentse1

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

Gossypium hirsutum
Gossypium hirsutum · TaxonChriKo · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e1

“the spring application yielded significantly (P—.01) more lint cotton than the fall or winter treatments”

✓ located verbatim in the source · abstract, characters 610–714 · show in text ↑

potassium · organism · Gossypium hirsutum (cotton)Positive and negative results

6 papers: 5 positive, 1 negative or no effect

5 reporting no difference from an alternative

  1. positive
  2. positive
  3. positive

2 papers more in this group

See all 6 papers →

phosphorus · organism · Gossypium hirsutum (cotton)Positive and negative results

9 papers: 8 positive, 1 negative or no effect

8 reporting no difference from an alternative

  1. positive
  2. positive
  3. positive
    Omitting P reduced cotton biometric characteristics.

    Macronutrients Omission in the Growth of Cotton, BRS Topázio Cultivar Grown in Nutritious Solution · 2017

    No difference from an alternativeAbout lacking this nutrient, so it counts the other way round

5 papers more in this group

See all 9 papers →

potassium · yield · Zea mays (maize)Positive and negative results

320 papers: 291 positive, 29 negative or no effect

290 papers in the same direction as this paper · 28 in the opposite direction · 1 reporting no difference from an alternative

  1. no effect
  2. negative
  3. no effect

316 papers more in this group

See all 320 papers →

phosphorus · yield · Zea mays (maize)Positive and negative results

627 papers: 549 positive, 78 negative or no effect

548 papers in the same direction as this paper · 69 in the opposite direction · 9 reporting no difference from an alternative

  1. no effect
  2. no effect
  3. negative

623 papers more in this group

See all 627 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.