Abstract
This study was conducted to determine the effect of planting date, fungicide, and cultivar on severity of Sclerotinia crown and stem rot (SCSR) and subsequent productivity of alfalfa. The cultivars Armor and A9109 were seeded no-till in May, early August, mid August, and late August 1993 and 1994 in a sod uniformly infested with sclerotia of Sclerotinia trifoliorum. Four applications of the fungicide vinclozolin effectively controlled the disease. Averaged over years and cultivars, disease severity (percentage of plot area affected) in the no-fungicide treatment was 4, 12, 23, and 41% for the spring, early August, mid August, and late August plantings, respectively. Armor had higher disease severity than A9109 in the 1993 seeding, but not in the 1994 seeding. Forage yield the year after seeding reflected differences in disease severity ratings. The risk of severe SCSR damage in no-till summer seedings of alfalfa can be reduced dramatically if stands become established early enough so plants reach at least 10 weeks of age by the time apothecia emerge in the fall.
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Claims 5
Claim · model-written summary
Four vinclozolin applications controlled Sclerotinia disease.
- Taxon
- alfalfa
Medicago sativat0 - Treatment
- Four applications of the fungicide vinclozoline0
- Interactor
- Sclerotinia trifoliorum
Sclerotinia trifoliorumt1pathogen - Outcome
- diseasee0
- Direction
- controllede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Four applications of the fungicide vinclozolin effectively controlled the disease.”
t0“Alfalfa”
t1“Sclerotinia trifoliorum”
Claim · model-written summary
Disease severity in untreated plantings was 4%, 12%, 23% and 41% for spring through late August dates, respectively.
- Taxon
- alfalfaMedicago sativat0
- Treatment
- no-fungicide treatmente0
- Interactor
- Sclerotinia trifoliorumSclerotinia trifoliorumt1pathogen
- Outcome
- disease severitye0
- Value
- 4, 12, 23, and 41%e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“disease severity (percentage of plot area affected) in the no-fungicide treatment was 4, 12, 23, and 41% for the spring, early August, mid August, and late August plantings, respectively”
t0“Alfalfa”
t1“Sclerotinia trifoliorum”
Claim · model-written summary
Armor had more disease than A9109 in 1993 but not in 1994.
- Taxon
- alfalfaMedicago sativat0
- Material
- Armore0
- Interactor
- Sclerotinia trifoliorumSclerotinia trifoliorumt1pathogen
- Outcome
- disease severitye0
- Direction
- highere0
- Qualifier
- 1993 seedinge0
- Comparator
- A9109e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Armor had higher disease severity than A9109 in the 1993 seeding, but not in the 1994 seeding.”
t0“Alfalfa”
t1“Sclerotinia trifoliorum”
Claim · model-written summary
Forage yield the following year tracked disease severity.
- Taxon
- alfalfaMedicago sativat0
- Outcome
- Forage yielde0
- Comparator
- disease severity ratingse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Forage yield the year after seeding reflected differences in disease severity ratings.”
t0“Alfalfa”
t1“Sclerotinia trifoliorum”
Claim · model-written summary
Summer no-till alfalfa should establish early enough to be at least ten weeks old at fall apothecia emergence.
- Taxon
- alfalfaMedicago sativae0
- Outcome
- risk of severe SCSR damagee0
- Qualifier
- at least 10 weeks of agee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The risk of severe SCSR damage in no-till summer seedings of alfalfa can be reduced dramatically if stands become established early enough so plants reach at least 10 weeks of age by the time apothecia emerge in the fall.”
The same questions in other papers
fungicide · Sclerotinia trifoliorum · Medicago sativa (alfalfa)Results agree
1 paper in the same direction as this paper
- positive
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.