Paper · 1979 · Canadian Journal of Plant Science

EFFECTS OF CYCOCEL AND NITROGEN FORM ON TOMATO WATER RELATIONS, ION COMPOSITION, AND YIELD

W. G. PILL; V. N. LAMBETH; T. M. HINCKLEY

15
claims
23
verbatim quotes
7
citations
2
research areas
✓
Open access

Abstract

Fertilizing tomatoes (Lycopersicon esculentum Mill.) Missouri breeding line 76-1-60-8 with NH 4 -N, as compared to NO 3 -N sources, in pot culture with unequal anion species and concentration and constant substrate moisture supply increased leaf diffusive resistance and water stress; reduced total transpiration and transpiration rate, leaf area, and mean fruit weight; and increased fruit and leaf Ca concentration and fruit Mg, K, and P concentration. Cycocel applied both foliarly and as a substrate drench to plants under NH 4 nutrition increased leaf diffusive resistance; and reduced water stress, total transpiration, plant height, and total and mean fruit weights. Cycocel treatment under both N forms, with the exception of reduced leaf Ca concentration, either had no effect or increased leaf and fruit ion concentration. Under NH 4 -N nutrition, Cycocel treatment gave a 54% increase in fruit Ca concentration.

Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗

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 15

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Ammonium rather than nitrate increased leaf diffusive resistance.

Material
Missouri breeding line 76-1-60-8e0
Treatment
NH 4 -Ne0
Outcome
leaf diffusive resistancee0
Direction
increasede0
Comparator
NO 3 -N sourcese0
Setting
pot culturee0

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

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Fertilizing tomatoes (Lycopersicon esculentum Mill.) Missouri breeding line 76-1-60-8 with NH 4 -N, as compared to NO 3 -N sources, in pot culture with unequal anion species and concentration and constant substrate moisture supply increased leaf diffusive resistance and water stress; reduced total transpiration and transpiration rate, leaf area, and mean fruit weight; and increased fruit and leaf Ca concentration and fruit Mg, K, and P concentration.”

✓ located verbatim in the source · abstract, characters 0–454 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Ammonium rather than nitrate increased water stress.

Material
Missouri breeding line 76-1-60-8e0
Treatment
NH 4 -Ne0
Outcome
water stresse0
Direction
increasede0
Comparator
NO 3 -N sourcese0
Setting
pot culturee0

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

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Fertilizing tomatoes (Lycopersicon esculentum Mill.) Missouri breeding line 76-1-60-8 with NH 4 -N, as compared to NO 3 -N sources, in pot culture with unequal anion species and concentration and constant substrate moisture supply increased leaf diffusive resistance and water stress; reduced total transpiration and transpiration rate, leaf area, and mean fruit weight; and increased fruit and leaf Ca concentration and fruit Mg, K, and P concentration.”

✓ located verbatim in the source · abstract, characters 0–454 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Ammonium rather than nitrate reduced total transpiration and transpiration rate.

Material
Missouri breeding line 76-1-60-8e0
Treatment
NH 4 -Ne0
Outcome
total transpiration and transpiration ratee0
Direction
reducede0
Comparator
NO 3 -N sourcese0
Setting
pot culturee0

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

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Fertilizing tomatoes (Lycopersicon esculentum Mill.) Missouri breeding line 76-1-60-8 with NH 4 -N, as compared to NO 3 -N sources, in pot culture with unequal anion species and concentration and constant substrate moisture supply increased leaf diffusive resistance and water stress; reduced total transpiration and transpiration rate, leaf area, and mean fruit weight; and increased fruit and leaf Ca concentration and fruit Mg, K, and P concentration.”

✓ located verbatim in the source · abstract, characters 0–454 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Ammonium rather than nitrate reduced leaf area.

Material
Missouri breeding line 76-1-60-8e0
Treatment
NH 4 -Ne0
Outcome
leaf areae0
Direction
reducede0
Comparator
NO 3 -N sourcese0
Setting
pot culturee0

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

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Fertilizing tomatoes (Lycopersicon esculentum Mill.) Missouri breeding line 76-1-60-8 with NH 4 -N, as compared to NO 3 -N sources, in pot culture with unequal anion species and concentration and constant substrate moisture supply increased leaf diffusive resistance and water stress; reduced total transpiration and transpiration rate, leaf area, and mean fruit weight; and increased fruit and leaf Ca concentration and fruit Mg, K, and P concentration.”

✓ located verbatim in the source · abstract, characters 0–454 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Ammonium rather than nitrate reduced mean fruit weight.

Material
Missouri breeding line 76-1-60-8e0
Treatment
NH 4 -Ne0
Outcome
mean fruit weighte0
Direction
reducede0
Comparator
NO 3 -N sourcese0
Setting
pot culturee0

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

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Fertilizing tomatoes (Lycopersicon esculentum Mill.) Missouri breeding line 76-1-60-8 with NH 4 -N, as compared to NO 3 -N sources, in pot culture with unequal anion species and concentration and constant substrate moisture supply increased leaf diffusive resistance and water stress; reduced total transpiration and transpiration rate, leaf area, and mean fruit weight; and increased fruit and leaf Ca concentration and fruit Mg, K, and P concentration.”

✓ located verbatim in the source · abstract, characters 0–454 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Ammonium rather than nitrate increased fruit and leaf Ca concentration.

Material
Missouri breeding line 76-1-60-8e0
Treatment
NH 4 -Ne0
Outcome
fruit and leaf Ca concentratione0
Direction
increasede0
Comparator
NO 3 -N sourcese0
Setting
pot culturee0

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

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Fertilizing tomatoes (Lycopersicon esculentum Mill.) Missouri breeding line 76-1-60-8 with NH 4 -N, as compared to NO 3 -N sources, in pot culture with unequal anion species and concentration and constant substrate moisture supply increased leaf diffusive resistance and water stress; reduced total transpiration and transpiration rate, leaf area, and mean fruit weight; and increased fruit and leaf Ca concentration and fruit Mg, K, and P concentration.”

✓ located verbatim in the source · abstract, characters 0–454 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Ammonium rather than nitrate increased fruit Mg, K, and P concentration.

Material
Missouri breeding line 76-1-60-8e0
Treatment
NH 4 -Ne0
Outcome
fruit Mg, K, and P concentratione0
Direction
increasede0
Comparator
NO 3 -N sourcese0
Setting
pot culturee0

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

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Fertilizing tomatoes (Lycopersicon esculentum Mill.) Missouri breeding line 76-1-60-8 with NH 4 -N, as compared to NO 3 -N sources, in pot culture with unequal anion species and concentration and constant substrate moisture supply increased leaf diffusive resistance and water stress; reduced total transpiration and transpiration rate, leaf area, and mean fruit weight; and increased fruit and leaf Ca concentration and fruit Mg, K, and P concentration.”

✓ located verbatim in the source · abstract, characters 0–454 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Cycocel under ammonium nutrition increased leaf diffusive resistance.

Treatment
Cycocele1
Outcome
leaf diffusive resistancee1
Direction
increasede1
Qualifier
NH 4 nutritione1

Not reportedComparator

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

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Fertilizing tomatoes (Lycopersicon esculentum Mill.) Missouri breeding line 76-1-60-8 with NH 4 -N, as compared to NO 3 -N sources, in pot culture with unequal anion species and concentration and constant substrate moisture supply increased leaf diffusive resistance and water stress; reduced total transpiration and transpiration rate, leaf area, and mean fruit weight; and increased fruit and leaf Ca concentration and fruit Mg, K, and P concentration.”

✓ located verbatim in the source · abstract, characters 0–454 · show in text ↑
e1

“Cycocel applied both foliarly and as a substrate drench to plants under NH 4 nutrition increased leaf diffusive resistance; and reduced water stress, total transpiration, plant height, and total and mean fruit weights.”

✓ located verbatim in the source · abstract, characters 455–673 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Cycocel under ammonium nutrition reduced water stress.

Treatment
Cycocele1
Outcome
water stresse1
Direction
reducede1
Qualifier
NH 4 nutritione1

Not reportedComparator

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

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Fertilizing tomatoes (Lycopersicon esculentum Mill.) Missouri breeding line 76-1-60-8 with NH 4 -N, as compared to NO 3 -N sources, in pot culture with unequal anion species and concentration and constant substrate moisture supply increased leaf diffusive resistance and water stress; reduced total transpiration and transpiration rate, leaf area, and mean fruit weight; and increased fruit and leaf Ca concentration and fruit Mg, K, and P concentration.”

✓ located verbatim in the source · abstract, characters 0–454 · show in text ↑
e1

“Cycocel applied both foliarly and as a substrate drench to plants under NH 4 nutrition increased leaf diffusive resistance; and reduced water stress, total transpiration, plant height, and total and mean fruit weights.”

✓ located verbatim in the source · abstract, characters 455–673 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Cycocel under ammonium nutrition reduced total transpiration.

Treatment
Cycocele1
Outcome
total transpiratione1
Direction
reducede1
Qualifier
NH 4 nutritione1

Not reportedComparator

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

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Fertilizing tomatoes (Lycopersicon esculentum Mill.) Missouri breeding line 76-1-60-8 with NH 4 -N, as compared to NO 3 -N sources, in pot culture with unequal anion species and concentration and constant substrate moisture supply increased leaf diffusive resistance and water stress; reduced total transpiration and transpiration rate, leaf area, and mean fruit weight; and increased fruit and leaf Ca concentration and fruit Mg, K, and P concentration.”

✓ located verbatim in the source · abstract, characters 0–454 · show in text ↑
e1

“Cycocel applied both foliarly and as a substrate drench to plants under NH 4 nutrition increased leaf diffusive resistance; and reduced water stress, total transpiration, plant height, and total and mean fruit weights.”

✓ located verbatim in the source · abstract, characters 455–673 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Cycocel under ammonium nutrition reduced plant height.

Treatment
Cycocele1
Outcome
plant heighte1
Direction
reducede1
Qualifier
NH 4 nutritione1

Not reportedComparator

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

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Fertilizing tomatoes (Lycopersicon esculentum Mill.) Missouri breeding line 76-1-60-8 with NH 4 -N, as compared to NO 3 -N sources, in pot culture with unequal anion species and concentration and constant substrate moisture supply increased leaf diffusive resistance and water stress; reduced total transpiration and transpiration rate, leaf area, and mean fruit weight; and increased fruit and leaf Ca concentration and fruit Mg, K, and P concentration.”

✓ located verbatim in the source · abstract, characters 0–454 · show in text ↑
e1

“Cycocel applied both foliarly and as a substrate drench to plants under NH 4 nutrition increased leaf diffusive resistance; and reduced water stress, total transpiration, plant height, and total and mean fruit weights.”

✓ located verbatim in the source · abstract, characters 455–673 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Cycocel under ammonium nutrition reduced total and mean fruit weights.

Treatment
Cycocele1
Outcome
total and mean fruit weightse1
Direction
reducede1
Qualifier
NH 4 nutritione1

Not reportedComparator

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

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Fertilizing tomatoes (Lycopersicon esculentum Mill.) Missouri breeding line 76-1-60-8 with NH 4 -N, as compared to NO 3 -N sources, in pot culture with unequal anion species and concentration and constant substrate moisture supply increased leaf diffusive resistance and water stress; reduced total transpiration and transpiration rate, leaf area, and mean fruit weight; and increased fruit and leaf Ca concentration and fruit Mg, K, and P concentration.”

✓ located verbatim in the source · abstract, characters 0–454 · show in text ↑
e1

“Cycocel applied both foliarly and as a substrate drench to plants under NH 4 nutrition increased leaf diffusive resistance; and reduced water stress, total transpiration, plant height, and total and mean fruit weights.”

✓ located verbatim in the source · abstract, characters 455–673 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Cycocel reduced leaf calcium concentration under both nitrogen forms.

Treatment
Cycocele1
Outcome
leaf Ca concentratione1
Direction
reducede1

Not reportedComparator

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

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Fertilizing tomatoes (Lycopersicon esculentum Mill.) Missouri breeding line 76-1-60-8 with NH 4 -N, as compared to NO 3 -N sources, in pot culture with unequal anion species and concentration and constant substrate moisture supply increased leaf diffusive resistance and water stress; reduced total transpiration and transpiration rate, leaf area, and mean fruit weight; and increased fruit and leaf Ca concentration and fruit Mg, K, and P concentration.”

✓ located verbatim in the source · abstract, characters 0–454 · show in text ↑
e1

“Cycocel treatment under both N forms, with the exception of reduced leaf Ca concentration, either had no effect or increased leaf and fruit ion concentration.”

✓ located verbatim in the source · abstract, characters 674–832 · show in text ↑
Intervention effectobservedoriginal resultmixedmeasured

Claim · model-written summary

Other leaf and fruit ion concentrations were unchanged or increased with Cycocel under both nitrogen forms.

Treatment
Cycocele1
Outcome
leaf and fruit ion concentratione1
Direction
no effect or increasede1

Not reportedComparator

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

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Fertilizing tomatoes (Lycopersicon esculentum Mill.) Missouri breeding line 76-1-60-8 with NH 4 -N, as compared to NO 3 -N sources, in pot culture with unequal anion species and concentration and constant substrate moisture supply increased leaf diffusive resistance and water stress; reduced total transpiration and transpiration rate, leaf area, and mean fruit weight; and increased fruit and leaf Ca concentration and fruit Mg, K, and P concentration.”

✓ located verbatim in the source · abstract, characters 0–454 · show in text ↑
e1

“Cycocel treatment under both N forms, with the exception of reduced leaf Ca concentration, either had no effect or increased leaf and fruit ion concentration.”

✓ located verbatim in the source · abstract, characters 674–832 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Cycocel under ammonium nutrition increased fruit calcium concentration by 54%.

Treatment
Cycocele1
Outcome
fruit Ca concentratione1
Direction
increasee1
Value
54%e1
Qualifier
NH 4 -N nutritione1

Not reportedComparator

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

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Fertilizing tomatoes (Lycopersicon esculentum Mill.) Missouri breeding line 76-1-60-8 with NH 4 -N, as compared to NO 3 -N sources, in pot culture with unequal anion species and concentration and constant substrate moisture supply increased leaf diffusive resistance and water stress; reduced total transpiration and transpiration rate, leaf area, and mean fruit weight; and increased fruit and leaf Ca concentration and fruit Mg, K, and P concentration.”

✓ located verbatim in the source · abstract, characters 0–454 · show in text ↑
e1

“Under NH 4 -N nutrition, Cycocel treatment gave a 54% increase in fruit Ca concentration.”

✓ located verbatim in the source · abstract, characters 833–922 · show in text ↑

chlormequat chloride · disease · Solanum lycopersicum (tomato)Positive and negative results

6 papers: 5 positive, 1 negative or no effect

5 in the opposite direction

  1. positive
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  3. positive

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chlormequat chloride · growth · Solanum lycopersicum (tomato)Positive and negative results

14 papers: 6 positive, 8 negative or no effect

7 papers in the same direction as this paper · 6 in the opposite direction

  1. no effect
  2. positive
  3. positive

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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.