Abstract
Crown rust is a common disease on winter oats in Alabama. While considered the most destructive disease of oats, little has been done in recent years, with current cultivars, to demonstrate yield losses due to crown rust. Field studies were conducted to determine the effect of fungicides and application timing on crown rust severity and yield. All fungicides reduced crown rust and improved yield. Two fungicide applications were better than a single fungicide application for reducing crown rust. Relative to yield, a single fungicide application during flag leaf development (FS 8-9) was better than a single application during head extension (FS 10.3). When compared with the non-treated control, significant yield gains were obtained with Tilt and Headline in all four years and Stratego YLD in three of four years. Fungicide programs resulted in a broad range of crown rust severities; disease levels were highly related to decreases in yield in each of four years. In two study years, ‘Coker 227’ was more damaged by crown rust, with about 10% yield loss for each unit disease, than was ‘Horizon 270,’ with 2.5 to 4.5% loss. However, in 2013, virulence patterns of the crown rust pathogen shifted and disease on Horizon 270 was greater than that on Coker 227; relative yield losses were also much lower in 2013. Accepted for publication 15 April 2016. Published 4 May 2016.
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Claims 12
Claim · model-written summary
All fungicides reduced crown rust in winter oats.
- Taxon
- winter oats
Avena sativat0 - Treatment
- All fungicidese0
- Outcome
- crown ruste0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All fungicides reduced crown rust and improved yield”
t0“Winter Oats”
Claim · model-written summary
All fungicides improved winter oat yield.
- Taxon
- winter oatsAvena sativat0
- Treatment
- All fungicidese0
- Outcome
- yielde0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All fungicides reduced crown rust and improved yield”
t0“Winter Oats”
Claim · model-written summary
Two fungicide applications reduced crown rust more than one.
- Taxon
- winter oatsAvena sativat0
- Treatment
- Two fungicide applicationse0
- Outcome
- reducing crown ruste0
- Direction
- bettere0
- Comparator
- a single fungicide applicatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Two fungicide applications were better than a single fungicide application for reducing crown rust”
t0“Winter Oats”
Claim · model-written summary
A single application at flag leaf development improved yield more than one at head extension.
- Taxon
- winter oatsAvena sativat0
- Treatment
- a single fungicide application during flag leaf development (FS 8-9)e0
- Outcome
- bettere0
- Direction
- bettere0
- Comparator
- a single application during head extension (FS 10.3)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a single fungicide application during flag leaf development (FS 8-9) was better than a single application during head extension (FS 10.3)”
t0“Winter Oats”
Claim · model-written summary
Tilt gave significant yield gains in all four years versus no treatment.
- Taxon
- winter oatsAvena sativat0
- Treatment
- Tilte0
- Outcome
- yield gainse0
- Direction
- gainse0
- Qualifier
- all four yearse0
- Comparator
- non-treated controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“significant yield gains were obtained with Tilt and Headline in all four years and Stratego YLD in three of four years”
t0“Winter Oats”
e1“When compared with the non-treated control”
Claim · model-written summary
Headline gave significant yield gains in all four years versus no treatment.
- Taxon
- winter oatsAvena sativat0
- Treatment
- Headlinee0
- Outcome
- yield gainse0
- Direction
- gainse0
- Qualifier
- all four yearse0
- Comparator
- non-treated controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“significant yield gains were obtained with Tilt and Headline in all four years and Stratego YLD in three of four years”
t0“Winter Oats”
e1“When compared with the non-treated control”
Claim · model-written summary
Stratego YLD gave significant yield gains in three of four years.
- Taxon
- winter oatsAvena sativat0
- Treatment
- Stratego YLDe0
- Outcome
- yield gainse0
- Direction
- gainse0
- Qualifier
- three of four yearse0
- Comparator
- non-treated controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“significant yield gains were obtained with Tilt and Headline in all four years and Stratego YLD in three of four years”
t0“Winter Oats”
e1“When compared with the non-treated control”
Claim · model-written summary
Greater crown rust disease was related to lower yield each year.
- Taxon
- winter oatsAvena sativat0
- Interactor
- crown ruste1pathogen
- Outcome
- decreases in yielde0
- Direction
- decreasese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“disease levels were highly related to decreases in yield in each of four years”
t0“Winter Oats”
e1“All fungicides reduced crown rust and improved yield”
Claim · model-written summary
Coker 227 lost about 10% yield per disease unit in two years.
- Taxon
- winter oatsAvena sativat0
- Material
- ‘Coker 227’e0
- Interactor
- crown ruste0pathogen
- Outcome
- yield losse0
- Direction
- losse0
- Value
- about 10%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“‘Coker 227’ was more damaged by crown rust, with about 10% yield loss for each unit disease”
t0“Winter Oats”
Claim · model-written summary
Horizon 270 lost 2.5 to 4.5% yield per disease unit.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“‘Horizon 270,’ with 2.5 to 4.5% loss”
t0“Winter Oats”
Claim · model-written summary
In 2013, Horizon 270 had more disease than Coker 227.
- Taxon
- winter oatsAvena sativat0
- Material
- Horizon 270e0
- Outcome
- diseasee0
- Direction
- greatere0
- Comparator
- Coker 227e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“disease on Horizon 270 was greater than that on Coker 227”
t0“Winter Oats”
Claim · model-written summary
Relative yield losses were much lower in 2013.
- Taxon
- winter oatsAvena sativat0
- Outcome
- relative yield lossese0
- Direction
- lowere0
- Qualifier
- 2013e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“relative yield losses were also much lower in 2013”
t0“Winter Oats”
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8 papers in the same direction as this paper · 5 in the opposite direction
- no effect
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10 papers more in this group
See all 14 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.