Abstract
Many overwintering cultivated and native plants proved susceptible to the low-temperature basidiomycete which causes winter crown rot or snow mold of forage legumes and grasses in Alberta. Tests were made by inoculation in the late fall, or by planting in infested land. In the legumes, high resistance was found only in Medicago falcata and a Siberian strain of Trifolium pratense. T. hybridum, Melilotus spp., and the commonly grown varieties of alfalfa were particularly susceptible. Bromus spp. and Agropyron spp. proved highly resistant. Resistance was moderate in Elymus spp., Poa pratensis, and Festuca elatior; and slight in F. rubra and Phleum pratense. Agrostis alba, winter wheat, and winter rye were highly susceptible. In tests on horticultural plants, rhubarb and chives appeared to be immune; raspberry, peony, and columbine were resistant; and strawberry, parsnip, iris, and tulip were highly susceptible. A wide range of native plants and weeds suffered severe damage, and only Thalictrum spp. proved highly resistant. Shrubs and trees were not attacked.Following severe damage, crop rotation proved to be essential for the control of winter crown rot. The pathogen did not persist in the soil to any extent for longer than two to three years in land which was summer-fallowed or planted to annual crops or resistant grasses. Brome and other resistant grasses proved helpful in maintaining forage stands. Fertilizer treatments did not reduce the damage. Uncut tops and debris favored spread of the disease in alfalfa stands.
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Claims 18
Claim · model-written summary
Many overwintering cultivated and native plants were susceptible to the low-temperature basidiomycete causing winter crown rot.
Verbatim
e0“Many overwintering cultivated and native plants proved susceptible to the low-temperature basidiomycete”
Claim · model-written summary
High resistance was found only in Medicago falcata and a Siberian strain of Trifolium pratense among the legumes.
- Taxon
- Medicago falcata and a Siberian strain of Trifolium pratense
Medicago sativa subsp. falcata
Trifolium pratensee1 - Outcome
- high resistancee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In the legumes, high resistance was found only in Medicago falcata and a Siberian strain of Trifolium pratense”
Claim · model-written summary
T. hybridum, Melilotus spp. and commonly grown alfalfa varieties were particularly susceptible.
Verbatim
e2“T. hybridum, Melilotus spp., and the commonly grown varieties of alfalfa were particularly susceptible”
Claim · model-written summary
Bromus spp. and Agropyron spp. were highly resistant.
- Outcome
- highly resistante3
Bromus
AgropyronOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Bromus spp. and Agropyron spp. proved highly resistant”
Claim · model-written summary
Elymus spp., Poa pratensis and Festuca elatior had moderate resistance.
- Taxon
- Elymus spp., Poa pratensis, and Festuca elatior
.jpg?width=60)
Poa pratensis
Lolium arundinaceum
Elymuse4 - Outcome
- Resistancee4
- Qualifier
- moderatee4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e4“Resistance was moderate in Elymus spp., Poa pratensis, and Festuca elatior”
Claim · model-written summary
F. rubra and Phleum pratense had slight resistance.
- Taxon
- F. rubra and Phleum pratense
Phleum pratense
Festuca rubrae5 - Outcome
- Resistancee5
- Qualifier
- slighte5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Resistance was moderate in Elymus spp., Poa pratensis, and Festuca elatior; and slight in F. rubra and Phleum pratense”
Claim · model-written summary
Agrostis alba, winter wheat and winter rye were highly susceptible.
- Taxon
- Agrostis alba, winter wheat, and winter rye
Secale cereale
Triticum aestivum
Poa nemoralise6 - Outcome
- highly susceptiblee6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“Agrostis alba, winter wheat, and winter rye were highly susceptible”
Claim · model-written summary
Rhubarb and chives appeared to be immune to winter crown rot.
- Taxon
- rhubarb and chives
Rheum rhabarbarum
Allium schoenoprasume7 - Outcome
- immunee7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“rhubarb and chives appeared to be immune”
Claim · model-written summary
Raspberry, peony and columbine were resistant to winter crown rot.
Verbatim
e0“raspberry, peony, and columbine were resistant”
Claim · model-written summary
Strawberry, parsnip, iris and tulip were highly susceptible to winter crown rot.
Verbatim
e0“strawberry, parsnip, iris, and tulip were highly susceptible”
Claim · model-written summary
A wide range of native plants and weeds suffered severe damage.
Verbatim
e0“A wide range of native plants and weeds suffered severe damage”
Claim · model-written summary
Only Thalictrum spp. among the native plants was highly resistant.
- Taxon
- Thalictrum spp.
Thalictrume0 - Outcome
- highly resistante0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“only Thalictrum spp. proved highly resistant”
Claim · model-written summary
Shrubs and trees were not attacked by winter crown rot.
Verbatim
e0“Shrubs and trees were not attacked”
Claim · model-written summary
After severe damage, crop rotation was essential for controlling winter crown rot.
- Taxon
- alfalfa
Medicago sativat0 - Treatment
- crop rotatione1
- Outcome
- control of winter crown rote1
- Direction
- essentiale1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“ALFALFA, CLOVERS, AND GRASSES”
e1“Following severe damage, crop rotation proved to be essential for the control of winter crown rot”
Claim · model-written summary
The pathogen did not persist in soil for longer than two to three years under summer-fallow, annual crops or resistant grasses.
- Taxon
- alfalfaMedicago sativat0
- Outcome
- persist in the soile1
- Qualifier
- for longer than two to three yearse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“ALFALFA, CLOVERS, AND GRASSES”
e1“The pathogen did not persist in the soil to any extent for longer than two to three years in land which was summer-fallowed or planted to annual crops or resistant grasses”
Claim · model-written summary
Brome and other resistant grasses helped maintain forage stands.
Verbatim
e0“Brome and other resistant grasses proved helpful in maintaining forage stands”
Claim · model-written summary
Fertilizer treatments did not reduce winter crown rot damage in alfalfa.
- Taxon
- alfalfaMedicago sativat0
- Treatment
- Fertilizer treatmentse1
- Outcome
- the damagee1
- Direction
- did not reducee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“ALFALFA, CLOVERS, AND GRASSES”
e1“Fertilizer treatments did not reduce the damage”
Claim · model-written summary
Uncut tops and debris favored spread of the disease in alfalfa stands.
- Taxon
- alfalfaMedicago sativae0
- Treatment
- Uncut tops and debrise0
- Outcome
- spread of the diseasee0
- Direction
- favorede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Uncut tops and debris favored spread of the disease in alfalfa stands”
The same questions in other papers
rotation · disease · Medicago sativa (alfalfa)Positive and negative results
2 in the opposite direction
- no effect
- no effect
fertilization · pest · Medicago sativa (alfalfa)Positive and negative results
1 paper in the same direction as this paper · 7 in the opposite direction
- positive
- positive
- positive
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.