Paper · 1991 · HortScience

THE EFFECT OF COPPER SULFATE FILTERS ON GROWTH OF TOMATO AND PEPPER TRANSPLANTS

Jodie Benson; John Kelly

6
claims
6
verbatim quotes
0
citations
2
research areas
✓
Open access

Abstract

Tomato and pepper transplants were grown in an environment with a high red to far-red light ratio, to determine if this was an effective method for controlling plant height. This light environment was provided by placing plants under copper sulfate filters, which absorb most of the light in the far-red region of the spectrum. Copper sulfate solutions were 4%, 8%, and 16% w/v. Tomato transplants grown under the filters were approximately 40% shorter than control plants, had less dry weight and leaf area, and increased leaf chlorophyll. Leaf number data was less clearly affected. Differences were not observed among the three different CuSO 4 concentrations. Similar results were observed for peppers. Field trials on tomatoes indicated that total yield, earliness of fruiting, and fruit quality were not affected by growing transplants under the CUSO 4 filters.

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Claims 6

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Filtered tomato transplants were approximately 40% shorter than controls.

Treatment
under the filterse0
Outcome
transplantse0
Direction
shortere0
Value
40%e0
Comparator
control 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

“Tomato transplants grown under the filters were approximately 40% shorter than control plants”

✓ located verbatim in the source · abstract, characters 379–472 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Filtered tomato transplants had lower dry weight and leaf area.

Treatment
under the filterse0
Outcome
dry weight and leaf areae0
Direction
lesse0
Comparator
control 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

“Tomato transplants grown under the filters were approximately 40% shorter than control plants, had less dry weight and leaf area”

✓ located verbatim in the source · abstract, characters 379–507 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Filtered tomato transplants had more leaf chlorophyll.

Treatment
under the filterse0
Outcome
leaf chlorophylle0
Direction
increasede0
Comparator
control 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

“Tomato transplants grown under the filters were approximately 40% shorter than control plants, had less dry weight and leaf area, and increased leaf chlorophyll”

✓ located verbatim in the source · abstract, characters 379–539 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Filter concentration did not produce observed differences.

Treatment
CuSO 4 concentrationse0
Outcome
Differencese0
Direction
not observede0
Comparator
three different CuSO 4 concentrationse0

Not reportedTaxon

Verbatim

e0

“Differences were not observed among the three different CuSO 4 concentrations”

✓ located verbatim in the source · abstract, characters 585–662 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Pepper transplants showed similar responses to the filters.

Taxon
peppersCapsicume0
Outcome
Similar resultse0

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

Capsicum
Capsicum · Taxon · picture of the genus (one of its species)Public domain · Wikimedia Commons ↗

Verbatim

e0

“Similar results were observed for peppers”

✓ located verbatim in the source · abstract, characters 664–705 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Filtered tomato transplants did not change total field yield, earliness or fruit quality.

Treatment
growing transplants under the CUSO 4 filterse0
Outcome
total yield, earliness of fruiting, and fruit qualitye0
Direction
not affectede0
Setting
Field trialse0

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

“Field trials on tomatoes indicated that total yield, earliness of fruiting, and fruit quality were not affected by growing transplants under the CUSO 4 filters”

✓ located verbatim in the source · abstract, characters 707–866 · show in text ↑

transplanting · quality: grain · Solanum lycopersicum (tomato)Positive and negative results

4 papers: 2 positive, 2 negative or no effect

1 paper in the same direction as this paper · 2 in the opposite direction

  1. positive
  2. positive
  3. no effect
See all 4 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.