Paper · 1991 · Korean Journal of Weed Science

Effect of Plant Growth Regulators on Lodging in Rice

Lee; Sang-Chul; S. K. DeDatta

13
claims
27
verbatim quotes
0
citations
3
research areas
—
Not open access

Abstract

The experimental growth regulators Hoe78784 and PP-333 significantly reduced lodging in all rices. However, they did not significantly affect the crop vegetative characteristics and yield components, except by decreasing plant height when both growth regulators were applied at booting stage. Grain yield of IR21820-154-3-2-2-3 increased due to reduced lodging when Hoe78784 and PP-333 were applied at booting. These growth regulators increased the thickness and diameter of the culm. Applying CCC did not affect lodging in all test varieties. CCC-treated varieties and the control showed lower number of vascular bundles and culm thickness and diameter of the third and fourth internodes. Hoe78784 and PP-333 significantly reduced internode length from the second to the third internode in short-statured varieties. In tall varieties. reduction extended up to the fourth internode. Culm N content of the varieties did not significantly differ among treatments, except in IR8. Culm P content also did not differ significantly among treatments. although K and Si content was the highest than control when Hoe78784 was applied.

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Claims 13

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Hoe78784 and PP-333 significantly reduced lodging in rice.

Treatment
experimental growth regulators Hoe78784 and PP-333e1
Outcome
lodginge1
Direction
reducede1

Not reportedComparator

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

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e1

“The experimental growth regulators Hoe78784 and PP-333 significantly reduced lodging in all rices”

✓ located verbatim in the source · abstract, characters 0–97 · show in text ↑
t0

“Lodging in Rice”

✓ located verbatim in the source · title, characters 37–52 · show in text ↑
Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Hoe78784 and PP-333 did not significantly affect crop vegetative characteristics and yield components when applied at booting stage.

Treatment
growth regulatorse2
Outcome
crop vegetative characteristics and yield componentse2
Direction
did not significantly affecte2

Not reportedComparator

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

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e2

“However, they did not significantly affect the crop vegetative characteristics and yield components, except by decreasing plant height when both growth regulators were applied at booting stage”

✓ located verbatim in the source · abstract, characters 99–291 · show in text ↑
t0

“Lodging in Rice”

✓ located verbatim in the source · title, characters 37–52 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Hoe78784 and PP-333 decreased plant height when applied at booting stage.

Treatment
both growth regulators were applied at booting stagee2
Outcome
plant heighte2
Direction
decreasinge2

Not reportedComparator

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

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e2

“However, they did not significantly affect the crop vegetative characteristics and yield components, except by decreasing plant height when both growth regulators were applied at booting stage”

✓ located verbatim in the source · abstract, characters 99–291 · show in text ↑
t0

“Lodging in Rice”

✓ located verbatim in the source · title, characters 37–52 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Grain yield of IR21820-154-3-2-2-3 increased, due to reduced lodging, when Hoe78784 and PP-333 were applied at booting.

Material
IR21820-154-3-2-2-3e3
Treatment
Hoe78784 and PP-333 were applied at bootinge3
Outcome
Grain yielde3
Direction
increasede3
Qualifier
due to reduced lodginge3

Not reportedComparator

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

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e3

“Grain yield of IR21820-154-3-2-2-3 increased due to reduced lodging when Hoe78784 and PP-333 were applied at booting”

✓ located verbatim in the source · abstract, characters 293–409 · show in text ↑
t0

“Lodging in Rice”

✓ located verbatim in the source · title, characters 37–52 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Hoe78784 and PP-333 increased culm thickness and diameter.

Organ / stage
culme4
Treatment
growth regulatorse4
Outcome
thickness and diameter of the culme4
Direction
increasede4

Not reportedComparator

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

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e4

“These growth regulators increased the thickness and diameter of the culm”

✓ located verbatim in the source · abstract, characters 411–483 · show in text ↑
t0

“Lodging in Rice”

✓ located verbatim in the source · title, characters 37–52 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Applying CCC did not affect lodging in test varieties.

Treatment
CCCe5
Outcome
lodginge5
Direction
did not affecte5

Not reportedComparator

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

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e5

“Applying CCC did not affect lodging in all test varieties”

✓ located verbatim in the source · abstract, characters 485–542 · show in text ↑
t0

“Lodging in Rice”

✓ located verbatim in the source · title, characters 37–52 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

CCC-treated varieties and the control showed lower number of vascular bundles and lower culm thickness and diameter of the third and fourth internodes.

Organ / stage
third and fourth internodese6
Treatment
CCC-treated varietiese6
Outcome
number of vascular bundles and culm thickness and diameter of the third and fourth internodese6
Direction
lowere6

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

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e6

“CCC-treated varieties and the control showed lower number of vascular bundles and culm thickness and diameter of the third and fourth internodes”

✓ located verbatim in the source · abstract, characters 544–688 · show in text ↑
t0

“Lodging in Rice”

✓ located verbatim in the source · title, characters 37–52 · show in text ↑
Intervention effectobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Hoe78784 and PP-333 significantly reduced internode length from the second to the third internode in short-statured varieties.

Material
short-statured varietiese7
Organ / stage
from the second to the third internodee7
Treatment
Hoe78784 and PP-333e7
Outcome
internode lengthe7
Direction
reducede7

Not reportedComparator

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

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e7

“Hoe78784 and PP-333 significantly reduced internode length from the second to the third internode in short-statured varieties”

✓ located verbatim in the source · abstract, characters 690–815 · show in text ↑
t0

“Lodging in Rice”

✓ located verbatim in the source · title, characters 37–52 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

In tall varieties, the reduction in internode length extended up to the fourth internode.

Material
tall varietiese6
Organ / stage
fourth internodee6
Treatment
Hoe78784 and PP-333e7
Outcome
reduction extended up to the fourth internodee6
Direction
reductione6

Not reportedComparator

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

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e7

“Hoe78784 and PP-333 significantly reduced internode length from the second to the third internode in short-statured varieties”

✓ located verbatim in the source · abstract, characters 690–815 · show in text ↑
e6

“In tall varieties. reduction extended up to the fourth internode”

✓ located verbatim in the source · abstract, characters 817–881 · show in text ↑
t0

“Lodging in Rice”

✓ located verbatim in the source · title, characters 37–52 · show in text ↑
Observationobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Culm N content did not significantly differ among treatments.

Organ / stage
Culme7
Treatment
treatmentse7
Outcome
Culm N contente7
Direction
did not significantly differe7

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

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e7

“Culm N content of the varieties did not significantly differ among treatments, except in IR8”

✓ located verbatim in the source · abstract, characters 883–975 · show in text ↑
t0

“Lodging in Rice”

✓ located verbatim in the source · title, characters 37–52 · show in text ↑
Observationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Culm N content differed significantly in IR8.

Material
IR8e7
Organ / stage
Culme7
Outcome
Culm N contente7

Not reportedDirection

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

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e7

“Culm N content of the varieties did not significantly differ among treatments, except in IR8”

✓ located verbatim in the source · abstract, characters 883–975 · show in text ↑
t0

“Lodging in Rice”

✓ located verbatim in the source · title, characters 37–52 · show in text ↑
Observationobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Culm P content did not differ significantly among treatments.

Organ / stage
Culme6
Outcome
Culm P contente6
Direction
did not differ significantlye6

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

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e6

“Culm P content also did not differ significantly among treatments”

✓ located verbatim in the source · abstract, characters 977–1042 · show in text ↑
t0

“Lodging in Rice”

✓ located verbatim in the source · title, characters 37–52 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

K and Si content was highest in Hoe78784-treated culms compared with the control.

Treatment
Hoe78784e5
Outcome
K and Si contente5
Direction
higheste5
Comparator
controle5

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

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e5

“although K and Si content was the highest than control when Hoe78784 was applied”

✓ located verbatim in the source · abstract, characters 1044–1124 · show in text ↑
t0

“Lodging in Rice”

✓ located verbatim in the source · title, characters 37–52 · show in text ↑

chlormequat chloride · growth · Oryza sativa (rice)Results differ

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

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paclobutrazol · yield · Oryza sativa (rice)Results differ

28 papers: 23 positive, 5 negative or no effect

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

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paclobutrazol · growth · Oryza sativa (rice)Results differ

29 papers: 24 positive, 5 negative or no effect

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

  1. no effect
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25 papers more in this group

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class · yield · Oryza sativa (rice)Positive and negative results

47 papers: 39 positive, 8 negative or no effect

7 papers in the same direction as this paper · 39 in the opposite direction

  1. positive
  2. positive
  3. positive

43 papers more in this group

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class · growth · Oryza sativa (rice)Positive and negative results

80 papers: 62 positive, 18 negative or no effect

61 papers in the same direction as this paper · 17 in the opposite direction · 1 reporting no difference from an alternative

  1. no effect
  2. negative
  3. negative

76 papers more in this group

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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.