Paper · 1973 · Crop Science

Effect of Time and Rate of Application of Two Growth Retardants on Growth, Flowering, and Yield of Upland Cotton1

A. Marani; M. Zur; A. Eshel; et al.

12
claims
25
verbatim quotes
5
citations
2
research areas
—
Not open access

Abstract

Six experiments were conducted at four locations in Israel in order to evaluate the effect of two growth retarding chemicals, CCC and CMH, on plants of Upland cotton, Gossypium hirsutum L. When sprayed during the first week of flowering, CCC at 50 and CMH at 480 g a.i./ha retarded the increase in height of cotton plants without adversely affecting lint yield or quality. These treatments caused a small reduction in flower production, but this was not associated with a decrease in yield. In some of the experiments, the increase in plant height following treatment was reduced by as much as 50%. Application of CCC at the rate of 100 g a.i./h at the beginning of flowering significantly reduced lint yield in one experiment. Increasing the rate of CMH to 720 g a.i./ha produced no harmful effects. When CCC or CMH were applied in the middle of the flowering period, they were less effective in reducing plant height. These results indicate that both CCC and CMH may be used to arrest excessive vegetative development of cotton plants, and that the optimum time of application is the beginning of flowering.

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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 resultpositivemeasured

Claim · model-written summary

CCC at 50 g a.i./ha early in flowering retarded cotton height increase.

Taxon
Upland cottone0
Treatment
CCC at 50e1
Outcome
increase in height of cotton plantse1
Direction
retardede1
Qualifier
first week of floweringe1

Not reportedComparator

Verbatim

e0

“plants of Upland cotton”

✓ located verbatim in the source · abstract, characters 142–165 · show in text ↑
e1

“When sprayed during the first week of flowering, CCC at 50 and CMH at 480 g a.i./ha retarded the increase in height of cotton plants”

✓ located verbatim in the source · abstract, characters 189–321 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

CMH at 480 g a.i./ha early in flowering retarded cotton height increase.

Taxon
Upland cottone0
Treatment
CMH at 480 g a.i./hae1
Outcome
increase in height of cotton plantse1
Direction
retardede1

Not reportedComparator

Verbatim

e0

“plants of Upland cotton”

✓ located verbatim in the source · abstract, characters 142–165 · show in text ↑
e1

“When sprayed during the first week of flowering, CCC at 50 and CMH at 480 g a.i./ha retarded the increase in height of cotton plants”

✓ located verbatim in the source · abstract, characters 189–321 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

CCC at 50 did not adversely affect lint yield or quality.

Taxon
Upland cottone0
Treatment
CCC at 50e1
Outcome
lint yield or qualitye1
Direction
without adversely affectinge1

Not reportedComparator

Verbatim

e0

“plants of Upland cotton”

✓ located verbatim in the source · abstract, characters 142–165 · show in text ↑
e1

“CCC at 50 and CMH at 480 g a.i./ha retarded the increase in height of cotton plants without adversely affecting lint yield or quality”

✓ located verbatim in the source · abstract, characters 238–371 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

CMH at 480 g a.i./ha did not adversely affect lint yield or quality.

Taxon
Upland cottone0
Treatment
CMH at 480 g a.i./hae1
Outcome
lint yield or qualitye1
Direction
without adversely affectinge1

Not reportedComparator

Verbatim

e0

“plants of Upland cotton”

✓ located verbatim in the source · abstract, characters 142–165 · show in text ↑
e1

“CCC at 50 and CMH at 480 g a.i./ha retarded the increase in height of cotton plants without adversely affecting lint yield or quality”

✓ located verbatim in the source · abstract, characters 238–371 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

These regulator treatments slightly reduced flower production.

Taxon
Upland cottone0
Treatment
These treatmentse1
Outcome
flower productione1
Direction
reductione1

Not reportedComparator

Verbatim

e0

“plants of Upland cotton”

✓ located verbatim in the source · abstract, characters 142–165 · show in text ↑
e1

“These treatments caused a small reduction in flower production”

✓ located verbatim in the source · abstract, characters 373–435 · show in text ↑
Associationobservedoriginal resultno effectmeasured

Claim · model-written summary

The flower reduction was not associated with lower yield.

Taxon
Upland cottone0
Organ / stage
flowere2
Outcome
yielde1
Direction
not associated with a decreasee1

Verbatim

e0

“plants of Upland cotton”

✓ located verbatim in the source · abstract, characters 142–165 · show in text ↑
e1

“this was not associated with a decrease in yield”

✓ located verbatim in the source · abstract, characters 441–489 · show in text ↑
e2

“small reduction in flower production”

✓ located verbatim in the source · abstract, characters 399–435 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Height increase was reduced by up to 50% in some experiments.

Taxon
Upland cottone0
Treatment
treatmente1
Outcome
increase in plant heighte1
Direction
reducede1
Value
50%e1

Not reportedComparator

Verbatim

e0

“plants of Upland cotton”

✓ located verbatim in the source · abstract, characters 142–165 · show in text ↑
e1

“In some of the experiments, the increase in plant height following treatment was reduced by as much as 50%”

✓ located verbatim in the source · abstract, characters 491–597 · show in text ↑
Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

CCC at 100 g a.i./h at flowering onset significantly reduced lint yield in one experiment.

Taxon
Upland cottone0
Treatment
CCC at the rate of 100 g a.i./he1
Outcome
lint yielde1
Direction
reducede1
Qualifier
in one experimente1

Not reportedComparator

Verbatim

e0

“plants of Upland cotton”

✓ located verbatim in the source · abstract, characters 142–165 · show in text ↑
e1

“Application of CCC at the rate of 100 g a.i./h at the beginning of flowering significantly reduced lint yield in one experiment”

✓ located verbatim in the source · abstract, characters 599–726 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Increasing CMH to 720 g a.i./ha produced no harmful effects.

Taxon
Upland cottone0
Treatment
CMH to 720 g a.i./hae1
Outcome
harmful effectse1
Direction
noe1

Not reportedComparator

Verbatim

e0

“plants of Upland cotton”

✓ located verbatim in the source · abstract, characters 142–165 · show in text ↑
e1

“Increasing the rate of CMH to 720 g a.i./ha produced no harmful effects”

✓ located verbatim in the source · abstract, characters 728–799 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Mid flowering CCC application was less effective at reducing height.

Taxon
Upland cottone0
Treatment
CCCe1
Outcome
reducing plant heighte1
Direction
less effectivee1
Qualifier
middle of the flowering periode1

Not reportedComparator

Verbatim

e0

“plants of Upland cotton”

✓ located verbatim in the source · abstract, characters 142–165 · show in text ↑
e1

“When CCC or CMH were applied in the middle of the flowering period, they were less effective in reducing plant height”

✓ located verbatim in the source · abstract, characters 801–918 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Mid flowering CMH application was less effective at reducing height.

Taxon
Upland cottone0
Treatment
CMHe1
Outcome
reducing plant heighte1
Direction
less effectivee1

Not reportedComparator

Verbatim

e0

“plants of Upland cotton”

✓ located verbatim in the source · abstract, characters 142–165 · show in text ↑
e1

“When CCC or CMH were applied in the middle of the flowering period, they were less effective in reducing plant height”

✓ located verbatim in the source · abstract, characters 801–918 · show in text ↑
Recommendationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

The authors recommend CCC or CMH at the beginning of flowering to arrest excessive vegetative development.

Taxon
Upland cottone0
Treatment
CCC and CMHe1
Outcome
arrest excessive vegetative development of cotton plantse1
Qualifier
beginning of floweringe1

Verbatim

e0

“plants of Upland cotton”

✓ located verbatim in the source · abstract, characters 142–165 · show in text ↑
e1

“both CCC and CMH may be used to arrest excessive vegetative development of cotton plants, and that the optimum time of application is the beginning of flowering”

✓ located verbatim in the source · abstract, characters 948–1108 · show in text ↑

chlormequat chloride · growth · Gossypium hirsutum (cotton)Positive and negative results

5 papers: 4 positive, 1 negative or no effect

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

  1. negative
  2. positive
  3. positive

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chlormequat chloride · quality: grain · Gossypium hirsutum (cotton)Positive and negative results

6 papers: 2 positive, 4 negative or no effect

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

  1. positive
  2. positive
  3. negative

2 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.