Paper · 2012 · Zhongguo Nongye Daxue xuebao

Effects of different nitrogen forms on seedling growth and main nutrient elements uptake under unequal salt distribution in cotton seedlings

Duan Liu-sheng

11
claims
22
verbatim quotes
0
citations
1
research areas
—
Not open access

Abstract

It is well known that salinity levels are seldom uniform in saline fields.A new split-root system established through grafting was conducted to study the effects of nitrogen forms(NH+4 and NO-3) on nutrient elements uptake and plant growth under unequal salt distribution in a greenhouse.The results indicated that a significant interaction was detected between unequal salt distribution and nitrogen forms(NH+4 and NO-3) on nutrient uptake and seedlings growth.Compared with equal salt distribution,unequal salt distribution decreased Na+ concentration,and increased main nutrient elements(N,P,K,Ca,Mg,Fe,Mn,Cu,Zn) uptake,leaf photosynthesis(17.1%) and biomass accumulation(18.5%);the main nutrient elements(N,P,K,Mg,Fe,Mn) uptake and biomass in NO-3-N treatment were higher than that in NH+4-N treatment;Under unequal salt distribution,the main nutrient elements(N,P,K,Ca,Mg,Fe,Mn,Cu,Zn) uptake,leaf photosynthesis(13.5%) and biomass(7.2%) in NO-3-N were higher than that in NH+4-N treatment.It is concluded that NO-3-N is superior to NH+4-N in improvement of main nutrient elements uptake and plant growth under unequal salt distribution.

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Claims 11

Associationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Salt distribution and nitrogen form interacted significantly for nutrient uptake and seedling growth.

Taxon
cotton seedlingsGossypium hirsutumt0
Treatment
unequal salt distribution and nitrogen forms(NH+4 and NO-3)e0
Outcome
nutrient uptake and seedlings growthe0

Not reportedDirection

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

e0

“a significant interaction was detected between unequal salt distribution and nitrogen forms(NH+4 and NO-3) on nutrient uptake and seedlings growth”

✓ located verbatim in the source · abstract, characters 315–461 · show in text ↑
t0

“cotton seedlings”

✓ located verbatim in the source · title, characters 124–140 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Unequal salt distribution decreased sodium concentration relative to equal distribution.

Taxon
cotton seedlingsGossypium hirsutumt0
Treatment
unequal salt distributione0
Outcome
Na+ concentratione0
Direction
decreasede0
Comparator
equal salt distributione0

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

e0

“Compared with equal salt distribution,unequal salt distribution decreased Na+ concentration”

✓ located verbatim in the source · abstract, characters 462–553 · show in text ↑
t0

“cotton seedlings”

✓ located verbatim in the source · title, characters 124–140 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Unequal salt distribution increased uptake of main nutrient elements.

Taxon
cotton seedlingsGossypium hirsutumt0
Treatment
unequal salt distributione0
Outcome
main nutrient elements(N,P,K,Ca,Mg,Fe,Mn,Cu,Zn) uptakee0
Direction
increasede0
Comparator
equal salt distributione0

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

e0

“Compared with equal salt distribution,unequal salt distribution decreased Na+ concentration,and increased main nutrient elements(N,P,K,Ca,Mg,Fe,Mn,Cu,Zn) uptake”

✓ located verbatim in the source · abstract, characters 462–622 · show in text ↑
t0

“cotton seedlings”

✓ located verbatim in the source · title, characters 124–140 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Unequal salt distribution increased leaf photosynthesis by 17.1%.

Taxon
cotton seedlingsGossypium hirsutumt0
Treatment
unequal salt distributione0
Outcome
leaf photosynthesise0
Direction
increasede0
Value
17.1%e0
Comparator
equal salt distributione0

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

e0

“Compared with equal salt distribution,unequal salt distribution decreased Na+ concentration,and increased main nutrient elements(N,P,K,Ca,Mg,Fe,Mn,Cu,Zn) uptake,leaf photosynthesis(17.1%) and biomass accumulation(18.5%)”

✓ located verbatim in the source · abstract, characters 462–681 · show in text ↑
t0

“cotton seedlings”

✓ located verbatim in the source · title, characters 124–140 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Unequal salt distribution increased biomass accumulation by 18.5%.

Taxon
cotton seedlingsGossypium hirsutumt0
Treatment
unequal salt distributione0
Outcome
biomass accumulatione0
Direction
increasede0
Value
18.5%e0
Comparator
equal salt distributione0

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

e0

“Compared with equal salt distribution,unequal salt distribution decreased Na+ concentration,and increased main nutrient elements(N,P,K,Ca,Mg,Fe,Mn,Cu,Zn) uptake,leaf photosynthesis(17.1%) and biomass accumulation(18.5%)”

✓ located verbatim in the source · abstract, characters 462–681 · show in text ↑
t0

“cotton seedlings”

✓ located verbatim in the source · title, characters 124–140 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

NO-3-N increased uptake of N, P, K, Mg, Fe and Mn relative to NH+4-N.

Taxon
cotton seedlingsGossypium hirsutumt0
Treatment
NO-3-N treatmente0
Outcome
main nutrient elements(N,P,K,Mg,Fe,Mn) uptakee0
Direction
highere0
Comparator
NH+4-N treatmente0

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

e0

“the main nutrient elements(N,P,K,Mg,Fe,Mn) uptake and biomass in NO-3-N treatment were higher than that in NH+4-N treatment”

✓ located verbatim in the source · abstract, characters 682–805 · show in text ↑
t0

“cotton seedlings”

✓ located verbatim in the source · title, characters 124–140 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

NO-3-N increased biomass relative to NH+4-N.

Taxon
cotton seedlingsGossypium hirsutumt0
Treatment
NO-3-N treatmente0
Outcome
biomasse0
Direction
highere0
Comparator
NH+4-N treatmente0

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

e0

“the main nutrient elements(N,P,K,Mg,Fe,Mn) uptake and biomass in NO-3-N treatment were higher than that in NH+4-N treatment”

✓ located verbatim in the source · abstract, characters 682–805 · show in text ↑
t0

“cotton seedlings”

✓ located verbatim in the source · title, characters 124–140 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Under unequal salt distribution NO-3-N increased main nutrient uptake relative to NH+4-N.

Taxon
cotton seedlingsGossypium hirsutumt0
Treatment
NO-3-Ne0
Outcome
main nutrient elements(N,P,K,Ca,Mg,Fe,Mn,Cu,Zn) uptakee0
Direction
highere0
Qualifier
Under unequal salt distributione0
Comparator
NH+4-N treatmente0

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

e0

“Under unequal salt distribution,the main nutrient elements(N,P,K,Ca,Mg,Fe,Mn,Cu,Zn) uptake,leaf photosynthesis(13.5%) and biomass(7.2%) in NO-3-N were higher than that in NH+4-N treatment.”

✓ located verbatim in the source · abstract, characters 806–994 · show in text ↑
t0

“cotton seedlings”

✓ located verbatim in the source · title, characters 124–140 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Under unequal salt distribution NO-3-N increased leaf photosynthesis by 13.5% relative to NH+4-N.

Taxon
cotton seedlingsGossypium hirsutumt0
Treatment
NO-3-Ne0
Outcome
leaf photosynthesise0
Direction
highere0
Value
13.5%e0
Qualifier
Under unequal salt distributione0
Comparator
NH+4-N treatmente0

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

e0

“Under unequal salt distribution,the main nutrient elements(N,P,K,Ca,Mg,Fe,Mn,Cu,Zn) uptake,leaf photosynthesis(13.5%) and biomass(7.2%) in NO-3-N were higher than that in NH+4-N treatment.”

✓ located verbatim in the source · abstract, characters 806–994 · show in text ↑
t0

“cotton seedlings”

✓ located verbatim in the source · title, characters 124–140 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Under unequal salt distribution NO-3-N increased biomass by 7.2% relative to NH+4-N.

Taxon
cotton seedlingsGossypium hirsutumt0
Treatment
NO-3-Ne0
Outcome
biomasse0
Direction
highere0
Value
7.2%e0
Qualifier
Under unequal salt distributione0
Comparator
NH+4-N treatmente0

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

e0

“Under unequal salt distribution,the main nutrient elements(N,P,K,Ca,Mg,Fe,Mn,Cu,Zn) uptake,leaf photosynthesis(13.5%) and biomass(7.2%) in NO-3-N were higher than that in NH+4-N treatment.”

✓ located verbatim in the source · abstract, characters 806–994 · show in text ↑
t0

“cotton seedlings”

✓ located verbatim in the source · title, characters 124–140 · show in text ↑
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

Authors conclude NO-3-N better improves nutrient uptake and plant growth under unequal salinity.

Taxon
cotton seedlingsGossypium hirsutumt0
Treatment
NO-3-Ne0
Outcome
improvement of main nutrient elements uptake and plant growthe0
Comparator
NH+4-Ne0

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

e0

“NO-3-N is superior to NH+4-N in improvement of main nutrient elements uptake and plant growth under unequal salt distribution.”

✓ located verbatim in the source · abstract, characters 1015–1141 · show in text ↑
t0

“cotton seedlings”

✓ located verbatim in the source · title, characters 124–140 · show in text ↑

nitric oxide · growth · Gossypium hirsutum (cotton)Results differ

7 papers: 6 positive, 1 negative or no effect

5 papers in the same direction as this paper · 1 in the opposite direction

  1. negative
  2. positive
  3. positive

3 papers more in this group

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nitric oxide · nutrient: content · Gossypium hirsutum (cotton)Results agree

2 papers: 2 positive, 0 negative or no effect

1 paper in the same direction as this paper

  1. positive
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nitric oxide · physiology: photosynthesis · Gossypium hirsutum (cotton)Results agree

4 papers: 4 positive, 0 negative or no effect

3 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive
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salinity · physiology: photosynthesis · Gossypium hirsutum (cotton)Results differ

26 papers: 4 positive, 22 negative or no effect

3 papers in the same direction as this paper · 22 in the opposite direction

  1. negative
  2. negative
  3. negative

22 papers more in this group

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salinity · physiology: ion balance · Gossypium hirsutum (cotton)Positive and negative results

17 papers: 2 positive, 15 negative or no effect

1 paper in the same direction as this paper · 15 in the opposite direction

  1. negative
  2. negative
  3. negative

13 papers more in this group

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salinity · nutrient: content · Gossypium hirsutum (cotton)Positive and negative results

27 papers: 5 positive, 22 negative or no effect

4 papers in the same direction as this paper · 22 in the opposite direction

  1. negative
  2. negative
  3. no effect

23 papers more in this group

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

108 papers: 16 positive, 92 negative or no effect

15 papers in the same direction as this paper · 91 in the opposite direction · 1 reporting no difference from an alternative

  1. negative
  2. negative
  3. negative

104 papers more in this group

See all 108 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.