Paper · 1975 · Journal of the American Society for Horticultural Science

Seeding Date and Rate, and Supplemental Light Effects on Onion Growth1

William F. Whiteside; Joseph S. Vandemark; Walter E. Splittstoesser

7
claims
11
verbatim quotes
0
citations
1
research areas
✓
Open access · cc-by-nc-nd

Abstract

Abstract Shoots and roots of onion ( Allium cepa L. cv. Spanish Beauty) seeded at the early planting date, receiving supplemental light and seeded at the low planting rate produced more dry weight per plant at transplanting than any other treatment. Dry weight of tops and bulbs of these plants was greater than plants of other treatments after plants had been grown in the Field for 7 weeks. At bulb maturity, no significant differences occurred in air-dried bulb weight between seeding rate and planting date. Plants receiving supplemental light had significantly more weight at transplanting and produced significantly more weight per bulb at maturity than plants grown under incident light only.

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 7

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Early planting increased onion shoot and root dry weight at transplanting relative to other treatments.

Taxon
onionAllium cepae0
Material
Spanish Beautye0
Treatment
early planting datee0
Outcome
dry weight per plant at transplantinge0
Direction
moree0
Comparator
any other treatmente0

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

Allium cepa
Allium cepa · TaxonMehdi · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Shoots and roots of onion ( Allium cepa L. cv. Spanish Beauty) seeded at the early planting date, receiving supplemental light and seeded at the low planting rate produced more dry weight per plant at transplanting than any other treatment”

✓ located verbatim in the source · abstract, characters 9–248 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Supplemental light increased onion shoot and root dry weight at transplanting relative to other treatments.

Taxon
onionAllium cepae0
Material
Spanish Beautye0
Treatment
supplemental lighte0
Outcome
dry weight per plant at transplantinge0
Direction
moree0
Comparator
any other treatmente0

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

Allium cepa
Allium cepa · TaxonMehdi · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Shoots and roots of onion ( Allium cepa L. cv. Spanish Beauty) seeded at the early planting date, receiving supplemental light and seeded at the low planting rate produced more dry weight per plant at transplanting than any other treatment”

✓ located verbatim in the source · abstract, characters 9–248 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Low planting rate increased onion shoot and root dry weight at transplanting relative to other treatments.

Taxon
onionAllium cepae0
Material
Spanish Beautye0
Treatment
low planting ratee0
Outcome
dry weight per plant at transplantinge0
Direction
moree0
Comparator
any other treatmente0

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

Allium cepa
Allium cepa · TaxonMehdi · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Shoots and roots of onion ( Allium cepa L. cv. Spanish Beauty) seeded at the early planting date, receiving supplemental light and seeded at the low planting rate produced more dry weight per plant at transplanting than any other treatment”

✓ located verbatim in the source · abstract, characters 9–248 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The combined early date, low rate and supplemental light treatment increased onion top and bulb dry weight after seven field weeks.

Taxon
onionAllium cepae1
Treatment
early planting date, receiving supplemental light and seeded at the low planting ratee1
Outcome
Dry weight of tops and bulbse0
Direction
greatere0
Qualifier
7 weekse0
Comparator
plants of other treatmentse0
Setting
Fielde0

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

Allium cepa
Allium cepa · TaxonMehdi · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Dry weight of tops and bulbs of these plants was greater than plants of other treatments after plants had been grown in the Field for 7 weeks”

✓ located verbatim in the source · abstract, characters 250–391 · show in text ↑
e1

“onion ( Allium cepa L. cv. Spanish Beauty) seeded at the early planting date, receiving supplemental light and seeded at the low planting rate”

✓ located verbatim in the source · abstract, characters 29–171 · show in text ↑
Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

At bulb maturity, seeding rate and planting date showed no significant difference in air dried bulb weight.

Taxon
onionAllium cepae1
Organ / stage
bulb maturitye0
Treatment
seeding rate and planting datee0
Outcome
air-dried bulb weighte0
Direction
no significant differencese0

Not reportedComparator

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

Allium cepa
Allium cepa · TaxonMehdi · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“At bulb maturity, no significant differences occurred in air-dried bulb weight between seeding rate and planting date”

✓ located verbatim in the source · abstract, characters 393–510 · show in text ↑
e1

“onion ( Allium cepa L. cv. Spanish Beauty)”

✓ located verbatim in the source · abstract, characters 29–71 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Supplemental light significantly increased onion weight at transplanting relative to incident light.

Taxon
onionAllium cepae1
Treatment
supplemental lighte0
Outcome
weight at transplantinge0
Direction
moree0
Comparator
incident light onlye0

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

Allium cepa
Allium cepa · TaxonMehdi · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Plants receiving supplemental light had significantly more weight at transplanting and produced significantly more weight per bulb at maturity than plants grown under incident light only”

✓ located verbatim in the source · abstract, characters 512–698 · show in text ↑
e1

“onion ( Allium cepa L. cv. Spanish Beauty)”

✓ located verbatim in the source · abstract, characters 29–71 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Supplemental light significantly increased onion bulb weight at maturity relative to incident light.

Taxon
onionAllium cepae1
Treatment
supplemental lighte0
Outcome
weight per bulb at maturitye0
Direction
moree0
Comparator
incident light onlye0

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

Allium cepa
Allium cepa · TaxonMehdi · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Plants receiving supplemental light had significantly more weight at transplanting and produced significantly more weight per bulb at maturity than plants grown under incident light only”

✓ located verbatim in the source · abstract, characters 512–698 · show in text ↑
e1

“onion ( Allium cepa L. cv. Spanish Beauty)”

✓ located verbatim in the source · abstract, characters 29–71 · show in text ↑

sowing time · growth · Allium cepa (onion)Positive and negative results

14 papers: 11 positive, 3 negative or no effect

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

  1. negative
  2. no effect
  3. no effect

10 papers more in this group

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light · growth · Allium cepa (onion)Positive and negative results

18 papers: 11 positive, 7 negative or no effect

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

  1. no effect
  2. negative
  3. negative

14 papers more in this group

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density · growth · Allium cepa (onion)Positive and negative results

26 papers: 23 positive, 3 negative or no effect

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

  1. negative
  2. negative
  3. negative

22 papers more in this group

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sowing time · yield · Allium cepa (onion)Positive and negative results

27 papers: 18 positive, 9 negative or no effect

8 papers in the same direction as this paper · 18 in the opposite direction

  1. positive
  2. positive
  3. positive

23 papers more in this group

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density · yield · Allium cepa (onion)Positive and negative results

54 papers: 48 positive, 6 negative or no effect

5 papers in the same direction as this paper · 48 in the opposite direction

  1. positive
  2. positive
  3. positive

50 papers more in this group

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light · phenology · Allium cepa (onion)Results agree

5 papers: 5 positive, 0 negative or no effect

4 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

1 paper more in this group

See all 5 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.