Paper · 1928 · Botanical Gazette

Controlling Influences in Corn Rot Problems

Joseph C. Ireland

11
claims
15
verbatim quotes
1
citations
4
research areas
—
Not open access

Abstract

1. Under optimum conditions for corn production, if the seed is viable, fungous infection of the type usually called root rot does not affect the yield. 2. Extremely high soil temperatures do not increase the susceptibility of corn to diseases, although the corn may be killed by the extreme heat. The Oklahoma soil temperature approached the thermal death point of maturing corn. 3. Applications of iron and aluminium salts do not increase the susceptibility of corn to diseases. In the case of clay soils, a limited application seems to be beneficial, perhaps as a flocculant. 4. Colloidal soils induce an extraordinary development of secondary roots in corn plants and render them more susceptible to fungous infection. Lesions originate at points where secondary roots break through the cortex. 5. A large percentage of corn rots may be eliminated by flocculating colloids in the soil, allowing the normal development of the plant.

Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. 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 11

Associationobservedoriginal resultno effectmeasured

Claim · model-written summary

Under optimum production conditions, root rot infection did not affect corn yield when seed was viable.

Interactor
fungouse0pathogen
Outcome
yielde0
Direction
does not affecte0
Qualifier
if the seed is viablee0

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Under optimum conditions for corn production, if the seed is viable, fungous infection of the type usually called root rot does not affect the yield.”

✓ located verbatim in the source · abstract, characters 3–152 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Extremely high soil temperatures did not increase corn disease susceptibility.

Treatment
Extremely high soil temperaturese0
Outcome
susceptibility of corn to diseasese0
Direction
do not increasee0

Not reportedComparator

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Extremely high soil temperatures do not increase the susceptibility of corn to diseases”

✓ located verbatim in the source · abstract, characters 156–243 · show in text ↑
Observationauthor interpretationoriginal resultnegativemeasured

Claim · model-written summary

Extreme heat may kill corn.

Treatment
extreme heate0
Outcome
killede0

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“the corn may be killed by the extreme heat”

✓ located verbatim in the source · abstract, characters 254–296 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Iron salt application did not increase corn disease susceptibility.

Treatment
irone0
Outcome
susceptibility of corn to diseasese0
Direction
do not increasee0

Not reportedComparator

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Applications of iron and aluminium salts do not increase the susceptibility of corn to diseases.”

✓ located verbatim in the source · abstract, characters 384–480 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Aluminium salt application did not increase corn disease susceptibility.

Treatment
aluminium saltse0
Outcome
susceptibility of corn to diseasese0
Direction
do not increasee0

Not reportedComparator

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Applications of iron and aluminium salts do not increase the susceptibility of corn to diseases.”

✓ located verbatim in the source · abstract, characters 384–480 · show in text ↑
Intervention effectauthor interpretationoriginal resultpositivemeasured

Claim · model-written summary

Limited salt application in clay soils seemed beneficial.

Treatment
iron and aluminium saltse1
Outcome
beneficiale0
Direction
beneficiale0
Qualifier
clay soilse0

Not reportedComparator

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“In the case of clay soils, a limited application seems to be beneficial, perhaps as a flocculant.”

✓ located verbatim in the source · abstract, characters 481–578 · show in text ↑
e1

“Applications of iron and aluminium salts”

✓ located verbatim in the source · abstract, characters 384–424 · show in text ↑
t0

“corn”

✓ located after whitespace/quote normalisation · title, characters 26–30 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Colloidal soils induced extraordinary secondary-root development in corn.

Organ / stage
secondary rootse0
Treatment
Colloidal soilse0
Outcome
development of secondary rootse0
Direction
extraordinarye0

Not reportedComparator

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Colloidal soils induce an extraordinary development of secondary roots in corn plants”

✓ located verbatim in the source · abstract, characters 582–667 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Colloidal soils increased corn susceptibility to fungal infection.

Treatment
Colloidal soilse0
Interactor
fungouse0pathogen
Outcome
susceptible to fungous infectione0
Direction
more susceptiblee0

Not reportedComparator

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Colloidal soils induce an extraordinary development of secondary roots in corn plants and render them more susceptible to fungous infection.”

✓ located verbatim in the source · abstract, characters 582–722 · show in text ↑
Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Corn lesions originated where secondary roots broke through the cortex.

Organ / stage
secondary rootse0
Outcome
Lesions originate at points where secondary roots break through the cortexe0

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Lesions originate at points where secondary roots break through the cortex.”

✓ located verbatim in the source · abstract, characters 723–798 · show in text ↑
e1

“corn plants”

✓ located verbatim in the source · abstract, characters 656–667 · show in text ↑
Intervention effectauthor interpretationoriginal resultpositivemeasured

Claim · model-written summary

Flocculating soil colloids could eliminate a large percentage of corn rots.

Treatment
flocculating colloids in the soile0
Outcome
corn rotse0
Direction
eliminatede0

Not reportedComparator

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“A large percentage of corn rots may be eliminated by flocculating colloids in the soil”

✓ located verbatim in the source · abstract, characters 802–888 · show in text ↑
Intervention effectauthor interpretationoriginal resultpositivemeasured

Claim · model-written summary

Flocculating soil colloids could allow normal corn development.

Treatment
flocculating colloids in the soile0
Outcome
normal development of the plante0

Not reportedComparatorDirection

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“A large percentage of corn rots may be eliminated by flocculating colloids in the soil, allowing the normal development of the plant.”

✓ located verbatim in the source · abstract, characters 802–935 · show in text ↑
t0

“corn”

✓ located after whitespace/quote normalisation · title, characters 26–30 · show in text ↑

iron atom · disease · Zea mays (maize)Positive and negative results

5 papers: 3 positive, 2 negative or no effect

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

  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.