Abstract
Root rot of corn in Ontario is caused primarily by parasitic soil micro-organisms, the most important of which are species of Pythium, Helminthosporium, and Fusarium in that order. The disease causes a decrease in the stand by pre-emergence killing and a dwarfing of the plants by the parasitic invasion and destruction of their roots by the organisms. The pathogens have different optimum soil temperatures but the lower ranges favour those that cause the most severe damage. The roots of other field crops can be parasitized by the organisms found associated with corn root rot, but their effect on the development of the crop varies greatly. It has been proved under greenhouse conditions that the severity of the disease is greatly reduced if the corn is preceded by cover crops of soybeans and materially increased when preceded by timothy. Other crops tested have an intermediate effect.
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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 10
Claim · model-written summary
Pythium species were the most important corn root rot organisms.
- Taxon
- corn
Zea mays subsp. mayse0 - Outcome
- Root rot of corne0
- Setting
- Ontarioe0
.jpg?width=60){kind=small}
PythiumOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Root rot of corn in Ontario is caused primarily by parasitic soil micro-organisms, the most important of which are species of Pythium, Helminthosporium, and Fusarium in that order.”
Claim · model-written summary
Helminthosporium species were the second most important corn root rot organisms.
- Taxon
- cornZea mays subsp. mayst0
- Interactor
- Helminthosporium
Helminthosporiume0pathogen - Outcome
- root rott0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the most important of which are species of Pythium, Helminthosporium, and Fusarium in that order”
t0“ROOT ROT OF CORN”
Claim · model-written summary
Fusarium species were the third most important corn root rot organisms.
- Taxon
- CORNZea mays subsp. mayst0
- Outcome
- ROOT ROTt0
FusariumOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the most important of which are species of Pythium, Helminthosporium, and Fusarium in that order”
t0“ROOT ROT OF CORN”
Claim · model-written summary
Corn root rot reduced stand through pre-emergence killing.
- Taxon
- cornZea mays subsp. mayst0
- Outcome
- decrease in the stande0
- Direction
- decreasee0
- Qualifier
- pre-emergence killinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The disease causes a decrease in the stand by pre-emergence killing”
t0“ROOT ROT OF CORN”
Claim · model-written summary
Corn root rot dwarfed plants through invasion and destruction of roots.
- Taxon
- cornZea mays subsp. mayst0
- Outcome
- dwarfing of the plantse0
- Qualifier
- parasitic invasion and destruction of their rootse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a dwarfing of the plants by the parasitic invasion and destruction of their roots by the organisms”
t0“ROOT ROT OF CORN”
Claim · model-written summary
Lower soil temperature ranges favored pathogens causing the most severe root rot damage.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- lower rangese0
- Interactor
- pathogense0pathogen
- Outcome
- most severe damagee0
- Direction
- favoure0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The pathogens have different optimum soil temperatures but the lower ranges favour those that cause the most severe damage.”
t0“ROOT ROT OF CORN”
Claim · model-written summary
Root rot organisms also parasitized roots of other field crops, with variable effects on development.
Verbatim
e0“The roots of other field crops can be parasitized by the organisms found associated with corn root rot, but their effect on the development of the crop varies greatly.”
Claim · model-written summary
Preceding corn with soybean cover crops greatly reduced root rot severity in greenhouse conditions.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- cover crops of soybeanse0
- Interactor
- soybeans
Glycine maxe0other - Outcome
- severity of the diseasee0
- Direction
- greatly reducede0
- Setting
- greenhouse conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under greenhouse conditions that the severity of the disease is greatly reduced if the corn is preceded by cover crops of soybeans”
Claim · model-written summary
Preceding corn with timothy materially increased root rot severity.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- timothye0
- Interactor
- timothy
Phleum pratensee0other - Outcome
- ROOT ROTt0
- Direction
- materially increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“materially increased when preceded by timothy”
t0“ROOT ROT OF CORN”
Claim · model-written summary
Other preceding crops had an intermediate effect on corn root rot severity.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- Other cropse0
- Outcome
- ROOT ROTt0
- Direction
- intermediatee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Other crops tested have an intermediate effect.”
t0“ROOT ROT OF CORN”
The same questions in other papers
Glycine max · disease · Zea mays (maize)Positive and negative results
4 papers in the same direction as this paper · 1 reporting no difference from an alternative
- no effect
- positive
- positive
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See all 6 papers →cover crop · disease · Zea mays (maize)Positive and negative results
2 papers in the same direction as this paper · 5 in the opposite direction · 1 reporting no difference from an alternative
- negative
- negative
- negative
5 papers more in this group
See all 9 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.