Paper · 1991 · HortScience

Longevity of Potted Chrysanthemums at Various Nitrogen and Potassium Concentrations and NH4: NO3 Ratios

Nadia Roude; Terril A. Nell; James E. Barrett

12
claims
18
verbatim quotes
12
citations
3
research areas
✓
Open access

Abstract

Plant height, flower diameter, days to flower, and longevity of `Iridon' chrysanthemums [Dendranthemum × grandiflorum (Ramat.) Kitamura] were not affected by various N and K concentrations (112, 225, 337, and 450 mg·liter -1 ) supplied during the last 5 weeks of production. However, increasing N concentration increased medium conductance, while varying K concentration had no effect on conductance. Visual grade of `Iridon' after 3 weeks in a simulated interior environment showed an interaction between concentrations of N and K. In a second study, growth and longevity of `Iridon' were affected by NH 4 : NO 3 ratios. Plants receiving a 0:1.0 ratio flowered 4 days later than plants receiving a 0.5:0.5 ratio and were taller than plants fertilized with a 1.0:0 ratio. Longevity was greater in plants receiving a 0:1.0 ratio than in those receiving 0.5:0.5 or 0.75:0.25 ratios. Also, longevity was similar in plants receiving NH 4 : NO 3 ratios of 0:1.0, 0.1:0.9, 0.2:0.8, and 0.3:0.7. Plants receiving 0:1.0 lasted 6 days longer than those receiving a 0.4:0.6 ratio.

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Claims 12

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Nitrogen concentrations did not affect height, flower diameter or flowering time.

Taxon
chrysanthemumsChrysanthemume0
Material
`Iridon'e0
Treatment
Ne0
Outcome
Plant height, flower diameter, days to flowere0
Direction
not affectede0
Qualifier
during the last 5 weeks of productione0

Not reportedComparator

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

Chrysanthemum
Chrysanthemum · Taxon · picture from its Wikimedia Commons categoryLucia Condac · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Plant height, flower diameter, days to flower, and longevity of `Iridon' chrysanthemums [Dendranthemum × grandiflorum (Ramat.) Kitamura] were not affected by various N and K concentrations (112, 225, 337, and 450 mg·liter -1 ) supplied during the last 5 weeks of production.”

✓ located verbatim in the source · abstract, characters 0–274 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Potassium concentrations did not affect height, flower diameter or flowering time.

Taxon
chrysanthemumsChrysanthemume0
Treatment
Ke0
Outcome
Plant height, flower diameter, days to flowere0
Direction
not affectede0

Not reportedComparator

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

Chrysanthemum
Chrysanthemum · Taxon · picture from its Wikimedia Commons categoryLucia Condac · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Plant height, flower diameter, days to flower, and longevity of `Iridon' chrysanthemums [Dendranthemum × grandiflorum (Ramat.) Kitamura] were not affected by various N and K concentrations (112, 225, 337, and 450 mg·liter -1 ) supplied during the last 5 weeks of production.”

✓ located verbatim in the source · abstract, characters 0–274 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Nitrogen concentrations did not affect longevity.

Taxon
chrysanthemumsChrysanthemume0
Treatment
Ne0
Outcome
longevitye0
Direction
not affectede0

Not reportedComparator

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

Chrysanthemum
Chrysanthemum · Taxon · picture from its Wikimedia Commons categoryLucia Condac · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Plant height, flower diameter, days to flower, and longevity of `Iridon' chrysanthemums [Dendranthemum × grandiflorum (Ramat.) Kitamura] were not affected by various N and K concentrations (112, 225, 337, and 450 mg·liter -1 ) supplied during the last 5 weeks of production.”

✓ located verbatim in the source · abstract, characters 0–274 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Potassium concentrations did not affect longevity.

Taxon
chrysanthemumsChrysanthemume0
Treatment
Ke0
Outcome
longevitye0
Direction
not affectede0

Not reportedComparator

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

Chrysanthemum
Chrysanthemum · Taxon · picture from its Wikimedia Commons categoryLucia Condac · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Plant height, flower diameter, days to flower, and longevity of `Iridon' chrysanthemums [Dendranthemum × grandiflorum (Ramat.) Kitamura] were not affected by various N and K concentrations (112, 225, 337, and 450 mg·liter -1 ) supplied during the last 5 weeks of production.”

✓ located verbatim in the source · abstract, characters 0–274 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Increasing nitrogen increased medium conductance.

Treatment
increasing N concentratione0
Outcome
medium conductancee0
Direction
increasede0

Not reportedTaxonComparator

Verbatim

e0

“increasing N concentration increased medium conductance”

✓ located verbatim in the source · abstract, characters 284–339 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Varying potassium had no effect on conductance.

Treatment
varying K concentratione0
Outcome
conductancee0
Direction
no effecte0

Not reportedTaxonComparator

Verbatim

e0

“varying K concentration had no effect on conductance.”

✓ located verbatim in the source · abstract, characters 347–400 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Visual grade showed an interaction between nitrogen and potassium after three weeks indoors.

Taxon
ChrysanthemumsChrysanthemumt0
Treatment
concentrations of N and Ke0
Outcome
Visual gradee0
Qualifier
after 3 weekse0
Setting
simulated interior environmente0

Not reportedComparatorDirection

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

Chrysanthemum
Chrysanthemum · Taxon · picture from its Wikimedia Commons categoryLucia Condac · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Visual grade of `Iridon' after 3 weeks in a simulated interior environment showed an interaction between concentrations of N and K.”

✓ located verbatim in the source · abstract, characters 401–532 · show in text ↑
t0

“Chrysanthemums”

✓ located verbatim in the source · title, characters 20–34 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Plants receiving 0:1.0 flowered four days later than those receiving 0.5:0.5.

Taxon
ChrysanthemumsChrysanthemumt0
Treatment
0:1.0 ratioe0
Outcome
flowerede0
Direction
latere0
Value
4 dayse0
Comparator
0.5:0.5 ratioe0

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

Chrysanthemum
Chrysanthemum · Taxon · picture from its Wikimedia Commons categoryLucia Condac · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Plants receiving a 0:1.0 ratio flowered 4 days later than plants receiving a 0.5:0.5 ratio”

✓ located verbatim in the source · abstract, characters 622–712 · show in text ↑
t0

“Chrysanthemums”

✓ located verbatim in the source · title, characters 20–34 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Plants receiving 0:1.0 were taller than those receiving 1.0:0.

Taxon
ChrysanthemumsChrysanthemumt0
Treatment
0:1.0 ratioe0
Outcome
tallere0
Direction
tallere0
Comparator
1.0:0 ratioe0

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

Chrysanthemum
Chrysanthemum · Taxon · picture from its Wikimedia Commons categoryLucia Condac · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Plants receiving a 0:1.0 ratio flowered 4 days later than plants receiving a 0.5:0.5 ratio and were taller than plants fertilized with a 1.0:0 ratio.”

✓ located verbatim in the source · abstract, characters 622–771 · show in text ↑
t0

“Chrysanthemums”

✓ located verbatim in the source · title, characters 20–34 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Longevity was greater at 0:1.0 than at 0.5:0.5 or 0.75:0.25.

Taxon
ChrysanthemumsChrysanthemumt0
Treatment
0:1.0 ratioe0
Outcome
Longevitye0
Direction
greatere0
Comparator
0.5:0.5 or 0.75:0.25 ratiose0

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

Chrysanthemum
Chrysanthemum · Taxon · picture from its Wikimedia Commons categoryLucia Condac · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Longevity was greater in plants receiving a 0:1.0 ratio than in those receiving 0.5:0.5 or 0.75:0.25 ratios.”

✓ located verbatim in the source · abstract, characters 772–880 · show in text ↑
t0

“Chrysanthemums”

✓ located verbatim in the source · title, characters 20–34 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Longevity was similar at ratios of 0:1.0, 0.1:0.9, 0.2:0.8 and 0.3:0.7.

Taxon
ChrysanthemumsChrysanthemumt0
Treatment
0:1.0e0
Outcome
longevitye0
Direction
similare0
Comparator
0.1:0.9, 0.2:0.8, and 0.3:0.7e0

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

Chrysanthemum
Chrysanthemum · Taxon · picture from its Wikimedia Commons categoryLucia Condac · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“longevity was similar in plants receiving NH 4 : NO 3 ratios of 0:1.0, 0.1:0.9, 0.2:0.8, and 0.3:0.7.”

✓ located verbatim in the source · abstract, characters 887–988 · show in text ↑
t0

“Chrysanthemums”

✓ located verbatim in the source · title, characters 20–34 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Plants receiving 0:1.0 lasted six days longer than those receiving 0.4:0.6.

Taxon
ChrysanthemumsChrysanthemumt0
Treatment
0:1.0e0
Outcome
lastede0
Direction
longere0
Value
6 dayse0
Comparator
0.4:0.6 ratioe0

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

Chrysanthemum
Chrysanthemum · Taxon · picture from its Wikimedia Commons categoryLucia Condac · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Plants receiving 0:1.0 lasted 6 days longer than those receiving a 0.4:0.6 ratio.”

✓ located verbatim in the source · abstract, characters 989–1070 · show in text ↑
t0

“Chrysanthemums”

✓ located verbatim in the source · title, characters 20–34 · show in text ↑

potassium · pest · ChrysanthemumPositive and negative results

3 papers: 1 positive, 2 negative or no effect

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

  1. positive
  2. negative
See all 3 papers →

potassium · growth · ChrysanthemumPositive and negative results

8 papers: 7 positive, 1 negative or no effect

7 in the opposite direction

  1. positive
  2. positive
  3. positive

4 papers more in this group

See all 8 papers →

nitrogen · growth · ChrysanthemumPositive and negative results

21 papers: 15 positive, 6 negative or no effect

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

  1. positive
  2. positive
  3. positive

17 papers more in this group

See all 21 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.