Paper · 1979 · HortScience

Response of Tomato to Pre-transplanting Applications of Chlormequat, Daminozide, and Ethephon1

James M. Pisarczyk; Walter E. Splittstoesser

12
claims
24
verbatim quotes
4
citations
3
research areas
✓
Open access · cc-by-nc-nd

Abstract

Abstract Succinic acid-2,2-dimethylhydrazide (daminozide), (2-chloroethyl)trimethylammonium chloride (chlormequat), or (2-chloroethyi)phosphonic acid (ethephon) inhibited the growth of tomato ( Lycopersicon esculentum Mill.) plants for 2 weeks when applied at the 2-true leaf stage. All growth regulators inhibited leaf expansion but ethephon increased the number of new leaves initiated. Ethephon delayed flowering after the plants were transplanted into the field. Ethephon or chlormequat-treated plants produced yields similar to untreated plants. Daminozide at high rates increased yield due to a greater number of fruit per plant.

Abstract from the paper’s OpenAlex record; open copy licensed cc-by-nc-nd. 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 12

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Daminozide inhibited tomato growth for two weeks at the two true leaf stage.

Taxon
tomato ( Lycopersicon esculentum Mill.)Solanum lycopersicume0
Organ / stage
2-true leaf stagee0
Treatment
daminozidee0
Outcome
growthe0
Direction
inhibitede0
Value
2 weekse0

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

“Succinic acid-2,2-dimethylhydrazide (daminozide), (2-chloroethyl)trimethylammonium chloride (chlormequat), or (2-chloroethyi)phosphonic acid (ethephon) inhibited the growth of tomato ( Lycopersicon esculentum Mill.) plants for 2 weeks when applied at the 2-true leaf stage.”

✓ located verbatim in the source · abstract, characters 9–282 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Chlormequat inhibited tomato growth for two weeks.

Taxon
tomato ( Lycopersicon esculentum Mill.)Solanum lycopersicume0
Treatment
chlormequate0
Outcome
growthe0
Direction
inhibitede0
Value
2 weekse0

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

“Succinic acid-2,2-dimethylhydrazide (daminozide), (2-chloroethyl)trimethylammonium chloride (chlormequat), or (2-chloroethyi)phosphonic acid (ethephon) inhibited the growth of tomato ( Lycopersicon esculentum Mill.) plants for 2 weeks when applied at the 2-true leaf stage.”

✓ located verbatim in the source · abstract, characters 9–282 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Ethephon inhibited tomato growth for two weeks.

Taxon
tomato ( Lycopersicon esculentum Mill.)Solanum lycopersicume0
Treatment
ethephone0
Outcome
growthe0
Direction
inhibitede0
Value
2 weekse0

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

“Succinic acid-2,2-dimethylhydrazide (daminozide), (2-chloroethyl)trimethylammonium chloride (chlormequat), or (2-chloroethyi)phosphonic acid (ethephon) inhibited the growth of tomato ( Lycopersicon esculentum Mill.) plants for 2 weeks when applied at the 2-true leaf stage.”

✓ located verbatim in the source · abstract, characters 9–282 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Daminozide inhibited tomato leaf expansion.

Treatment
daminozidee1
Outcome
leaf expansione0
Direction
inhibitede0

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

“All growth regulators inhibited leaf expansion”

✓ located verbatim in the source · abstract, characters 283–329 · show in text ↑
t0

“Tomato”

✓ located verbatim in the source · title, characters 12–18 · show in text ↑
e1

“Succinic acid-2,2-dimethylhydrazide (daminozide), (2-chloroethyl)trimethylammonium chloride (chlormequat), or (2-chloroethyi)phosphonic acid (ethephon)”

✓ located verbatim in the source · abstract, characters 9–160 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Chlormequat inhibited tomato leaf expansion.

Treatment
chlormequate1
Outcome
leaf expansione0
Direction
inhibitede0

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

“All growth regulators inhibited leaf expansion”

✓ located verbatim in the source · abstract, characters 283–329 · show in text ↑
t0

“Tomato”

✓ located verbatim in the source · title, characters 12–18 · show in text ↑
e1

“Succinic acid-2,2-dimethylhydrazide (daminozide), (2-chloroethyl)trimethylammonium chloride (chlormequat), or (2-chloroethyi)phosphonic acid (ethephon)”

✓ located verbatim in the source · abstract, characters 9–160 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Ethephon inhibited tomato leaf expansion.

Treatment
ethephone1
Outcome
leaf expansione0
Direction
inhibitede0

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

“All growth regulators inhibited leaf expansion”

✓ located verbatim in the source · abstract, characters 283–329 · show in text ↑
t0

“Tomato”

✓ located verbatim in the source · title, characters 12–18 · show in text ↑
e1

“Succinic acid-2,2-dimethylhydrazide (daminozide), (2-chloroethyl)trimethylammonium chloride (chlormequat), or (2-chloroethyi)phosphonic acid (ethephon)”

✓ located verbatim in the source · abstract, characters 9–160 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Ethephon increased the number of new tomato leaves initiated.

Treatment
ethephone0
Outcome
number of new leaves initiatede0
Direction
increasede0

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

“ethephon increased the number of new leaves initiated”

✓ located verbatim in the source · abstract, characters 334–387 · show in text ↑
t0

“Tomato”

✓ located verbatim in the source · title, characters 12–18 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Ethephon delayed tomato flowering after field transplanting.

Treatment
Ethephone0
Outcome
floweringe0
Direction
delayede0
Setting
fielde0

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

“Ethephon delayed flowering after the plants were transplanted into the field.”

✓ located verbatim in the source · abstract, characters 389–466 · show in text ↑
t0

“Tomato”

✓ located verbatim in the source · title, characters 12–18 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Ethephon treated tomato plants had yields similar to untreated plants.

Treatment
Ethephone0
Outcome
yieldse0
Direction
similare0
Comparator
untreated plantse0

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

“Ethephon or chlormequat-treated plants produced yields similar to untreated plants.”

✓ located verbatim in the source · abstract, characters 467–550 · show in text ↑
t0

“Tomato”

✓ located verbatim in the source · title, characters 12–18 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Chlormequat treated tomato plants had yields similar to untreated plants.

Treatment
chlormequate0
Outcome
yieldse0
Direction
similare0
Comparator
untreated plantse0

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

“Ethephon or chlormequat-treated plants produced yields similar to untreated plants.”

✓ located verbatim in the source · abstract, characters 467–550 · show in text ↑
t0

“Tomato”

✓ located verbatim in the source · title, characters 12–18 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

High daminozide rates increased tomato yield.

Treatment
Daminozide at high ratese0
Outcome
yielde0
Direction
increasede0

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

“Daminozide at high rates increased yield due to a greater number of fruit per plant.”

✓ located verbatim in the source · abstract, characters 551–635 · show in text ↑
t0

“Tomato”

✓ located verbatim in the source · title, characters 12–18 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

High daminozide rates produced more tomato fruit per plant.

Treatment
Daminozide at high ratese0
Outcome
number of fruit per plante0
Direction
greatere0

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

“Daminozide at high rates increased yield due to a greater number of fruit per plant.”

✓ located verbatim in the source · abstract, characters 551–635 · show in text ↑
t0

“Tomato”

✓ located verbatim in the source · title, characters 12–18 · show in text ↑

Daminozide · growth · Solanum lycopersicum (tomato)Results differ

9 papers: 6 positive, 3 negative or no effect

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

  1. positive
  2. positive
  3. positive

5 papers more in this group

See all 9 papers →

Daminozide · yield · Solanum lycopersicum (tomato)Results differ

10 papers: 8 positive, 2 negative or no effect

7 papers in the same direction as this paper · 2 in the opposite direction

  1. no effect
  2. negative
  3. positive

6 papers more in this group

See all 10 papers →

chlormequat chloride · yield · Solanum lycopersicum (tomato)Results differ

13 papers: 10 positive, 3 negative or no effect

2 papers in the same direction as this paper · 10 in the opposite direction

  1. positive
  2. positive
  3. positive

9 papers more in this group

See all 13 papers →

(2-chloroethyl)phosphonic acid · yield · Solanum lycopersicum (tomato)Results differ

16 papers: 15 positive, 1 negative or no effect

15 in the opposite direction

  1. positive
  2. positive
  3. positive

12 papers more in this group

See all 16 papers →

(2-chloroethyl)phosphonic acid · phenology · Solanum lycopersicum (tomato)Positive and negative results

6 papers: 4 positive, 2 negative or no effect

1 paper in the same direction as this paper · 4 in the opposite direction

  1. positive
  2. positive
  3. positive

2 papers more in this group

See all 6 papers →

(2-chloroethyl)phosphonic acid · growth · Solanum lycopersicum (tomato)Positive and negative results

13 papers: 8 positive, 5 negative or no effect

4 papers in the same direction as this paper · 8 in the opposite direction

  1. positive
  2. positive
  3. positive

9 papers more in this group

See all 13 papers →

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. positive
  2. positive
  3. positive

10 papers more in this group

See all 14 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.