Paper · 1962 · Agronomy Journal

Effect of Duration and Timing of Low Soil Oxygen Content on Shoot and Root Growth

J. Letey; L. H. Stolzy; G. B. Blank

4
claims
7
verbatim quotes
46
citations
1
research areas
—
Not open access

Abstract

Synopsis Shoot growth was critically damaged when soil containers were placed in nitrogen at early stages of growth before roots became well established. Root growth essentially ceased when placed in the nitrogen atmosphere and there was a time lag in recovery when placed in a “normal” atmosphere. All species studied, cotton, sunflower, and green beans, showed similar results.

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Claims 4

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Shoot growth was critically damaged when soil containers were placed in nitrogen at early stages of growth before roots were well established.

Taxon
cotton, sunflower, and green beanse2
Treatment
placed in nitrogene0
Outcome
Shoot growthe0
Direction
critically damagede0
Qualifier
at early stages of growth before roots became well establishede0

Not reportedComparator

Verbatim

e0

“Shoot growth was critically damaged when soil containers were placed in nitrogen at early stages of growth before roots became well established”

✓ located verbatim in the source · abstract, characters 9–152 · show in text ↑
e2

“All species studied, cotton, sunflower, and green beans, showed similar results”

✓ located verbatim in the source · abstract, characters 299–378 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Root growth essentially ceased when plants were placed in a nitrogen atmosphere.

Taxon
cotton, sunflower, and green beanse2
Treatment
nitrogen atmospheree1
Outcome
Root growthe1
Direction
essentially ceasede1

Not reportedComparator

Verbatim

e1

“Root growth essentially ceased when placed in the nitrogen atmosphere”

✓ located verbatim in the source · abstract, characters 154–223 · show in text ↑
e2

“All species studied, cotton, sunflower, and green beans, showed similar results”

✓ located verbatim in the source · abstract, characters 299–378 · show in text ↑
Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

After transfer back to a normal atmosphere, there was a time lag in recovery of growth.

Taxon
cotton, sunflower, and green beanse2
Outcome
recoverye3
Qualifier
time lage3

Verbatim

e3

“there was a time lag in recovery”

✓ located verbatim in the source · abstract, characters 228–260 · show in text ↑
e2

“All species studied, cotton, sunflower, and green beans, showed similar results”

✓ located verbatim in the source · abstract, characters 299–378 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

All three species studied showed similar results.

Taxon
cotton, sunflower, and green beanse2
Outcome
similar resultse2

Verbatim

e2

“All species studied, cotton, sunflower, and green beans, showed similar results”

✓ located verbatim in the source · abstract, characters 299–378 · show in text ↑

nitrogen · growth · Helianthus annuus (common sunflower)Results differ

76 papers: 63 positive, 13 negative or no effect

12 papers in the same direction as this paper · 63 in the opposite direction

  1. positive
  2. positive
  3. positive
    Nitrogen limitation reduced leaf area index in sunflower.

    Effects of nitrogen supply on canopy development of maize and sunflower · 2012

    Opposite directionAbout lacking this nutrient, so it counts the other way round

72 papers more in this group

See all 76 papers →

nitrogen · growth · Phaseolus vulgaris (common bean)Positive and negative results

60 papers: 44 positive, 16 negative or no effect

15 papers in the same direction as this paper · 44 in the opposite direction

  1. positive
  2. positive
  3. positive

56 papers more in this group

See all 60 papers →

nitrogen · growth · Gossypium hirsutum (cotton)Positive and negative results

153 papers: 129 positive, 24 negative or no effect

23 papers in the same direction as this paper · 129 in the opposite direction

  1. positive
  2. positive
    N deficiency significantly reduced total dry weight of cotton by 7% at 76 DAP.

    Canopy development and photosynthesis of cotton as influenced by nitrogen nutrition · 1990 · compared with N‐sufficient plants

    Opposite directionAbout lacking this nutrient, so it counts the other way round

  3. positive

149 papers more in this group

See all 153 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.