Abstract
Knowledge is limited about the impact of foliar diseases on wheat yield in Wisconsin. The objective of this study was to compare yield and diseases of wheat cultivars in several locations in Wisconsin in 2009 and 2010. Thirty-six wheat cultivars were planted in a randomized complete block design at field sites near Arlington, Chilton, and Lancaster, WI. At a fourth location, Janesville, WI, the design was a split plot with foliar fungicide application at Zadoks growth stage (GS) 45 at the whole-plot level and cultivar at the subplot level. Disease assessments were made four times during the growing season for powdery mildew (PM), Septoria/Stagonospora leaf blotch (SLB), and leaf rust. Incidence and severity of Fusarium head blight were assessed on 100 heads per plot at GS 85. Linear mixed-model analyses were used to study the effects of location, cultivar, and disease on grain yield (α = 0.05). Overall, SLB and PM were the most prevalent diseases. SLB severity was uniform among locations and PM was most prevalent at Arlington and Chilton. In both years, yield was affected by location, cultivar, location-cultivar interaction, and location-SLB and location-PM interactions. Yield was also negatively affected by PM in 2010. No effect of fungicide on disease severity or yield was observed at Janesville in either year. These results suggest that cultivar selection and location strongly influence grain yield in Wisconsin and that powdery mildew is capable of reducing grain yield.
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Claims 7
Claim · model-written summary
Septoria/Stagonospora leaf blotch and powdery mildew were the most prevalent diseases.
Not reportedTaxon
Verbatim
e0“Overall, SLB and PM were the most prevalent diseases.”
Claim · model-written summary
SLB severity was uniform among locations.
Not reportedTaxon
Verbatim
e0“SLB severity was uniform among locations”
Claim · model-written summary
Powdery mildew was most prevalent at Arlington and Chilton.
Not reportedTaxon
Verbatim
e0“PM was most prevalent at Arlington and Chilton”
Claim · model-written summary
Yield varied with location, cultivar and their interaction in both years.
- Taxon
- Wheat
Triticum aestivumt0 - Material
- cultivare0
- Outcome
- yielde0
- Setting
- locatione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Wheat”
e0“In both years, yield was affected by location, cultivar, location-cultivar interaction”
Claim · model-written summary
Yield varied with location by SLB and location by PM interactions.
- Taxon
- WheatTriticum aestivumt0
- Outcome
- location-SLB and location-PM interactionse0
- Setting
- locatione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Wheat”
e0“location-SLB and location-PM interactions”
Claim · model-written summary
Powdery mildew negatively affected yield in 2010.
- Taxon
- WheatTriticum aestivumt0
- Interactor
- PMe0pathogen
- Outcome
- Yielde0
- Direction
- negativelye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Wheat”
e0“Yield was also negatively affected by PM in 2010”
Claim · model-written summary
Fungicide had no observed effect on disease severity or yield at Janesville.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- fungicidee0
- Outcome
- disease severity or yielde0
- Direction
- No effecte0
- Setting
- Janesvillee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Wheat”
e0“No effect of fungicide on disease severity or yield was observed at Janesville in either year”
The same questions in other papers
fungicide · disease · Triticum aestivum (wheat)Positive and negative results
21 papers in the same direction as this paper · 135 in the opposite direction
- positive
- positive
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See all 157 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.