Paper · 2005 · Nanjing Nongye Daxue xuebao

Effects of different nitrogen levels on the growth and quality of spinach

Qirong Shen

4
claims
7
verbatim quotes
2
citations
2
research areas
—
Not open access

Abstract

Hydroponical experiment was carried out to study the effects of different nitrogen levels (5,10,15,20 mmol·L~-1)on biomass,nitrate and soluble sugar contents in different parts in spinach(Spinacia oleracea).The optimal nitrogen level for spinach growth was 15 mmol·L~-1.The content of nitrate increased with the increasing of nitrogen levels,while soluble sugar decreased,which indicated that proper nitrogen management could improve the quality of spinach.

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Claims 4

Recommendationobservedoriginal resultmeasured

Claim · model-written summary

The optimal nitrogen level for spinach growth was 15 mmol/L.

Outcome
optimal nitrogen level for spinach growthe0
Value
15 mmol·L~-1e0

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

Spinacia oleracea
Spinacia oleracea · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The optimal nitrogen level for spinach growth was 15 mmol·L~-1”

✓ located verbatim in the source · abstract, characters 207–269 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Nitrate content of spinach increased with increasing nitrogen levels.

Treatment
nitrogen levelse1
Outcome
content of nitratee1
Direction
increasede1

Not reportedComparator

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

Spinacia oleracea
Spinacia oleracea · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“spinach(Spinacia oleracea)”

✓ located verbatim in the source · abstract, characters 180–206 · show in text ↑
e1

“The content of nitrate increased with the increasing of nitrogen levels”

✓ located verbatim in the source · abstract, characters 270–341 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Soluble sugar content of spinach decreased with increasing nitrogen levels.

Treatment
nitrogen levelse1
Outcome
soluble sugare1
Direction
decreasede1

Not reportedComparator

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

Spinacia oleracea
Spinacia oleracea · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“spinach(Spinacia oleracea)”

✓ located verbatim in the source · abstract, characters 180–206 · show in text ↑
e1

“The content of nitrate increased with the increasing of nitrogen levels,while soluble sugar decreased”

✓ located verbatim in the source · abstract, characters 270–371 · show in text ↑
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

Proper nitrogen management could improve spinach quality.

Outcome
qualitye1

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

Spinacia oleracea
Spinacia oleracea · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“spinach(Spinacia oleracea)”

✓ located verbatim in the source · abstract, characters 180–206 · show in text ↑
e1

“proper nitrogen management could improve the quality of spinach”

✓ located verbatim in the source · abstract, characters 393–456 · show in text ↑

nitrogen · physiology: osmolytes · Spinacia oleracea (spinach)Positive and negative results

2 papers: 1 positive, 1 negative or no effect

1 in the opposite direction

  1. positive
See all 2 papers →

nitrogen · nutrient: content · Spinacia oleracea (spinach)Positive and negative results

35 papers: 21 positive, 14 negative or no effect

13 papers in the same direction as this paper · 21 in the opposite direction

  1. positive
  2. positive
  3. positive

31 papers more in this group

See all 35 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.