Abstract
In the eastern Great Plains, winter wheat ( Triticum aestivum L.) typically is planted from late September through November. However, grain yield and grain quality often are reduced by variable weather conditions in the spring and foliar disease infections. Field studies were conducted in southeastern Kansas from 1990 through 1995 on a Parsons silt loam soil (fine, mixed, thermic, Mollic Albaqualf) to evaluate effects of planting date, with and without a foliar fungicide (propiconazole: (1‐{[2‐(2,4‐dichloro‐phenly)‐4‐propyl‐1,3‐dioxolan‐2‐yl] methyl}‐1 H ‐1,2,4‐triazole), on grain yield, yield components, and grain quality (test weight and protein) of hard and soft red winter wheats with different maturities and disease resistances. In 2 of 6 yr, grain yields of all cultivars planted in late September were reduced significantly by barley yellow dwarf virus (BYDV) infection. Intermediate planting dates in mid‐ to late October resulted in the best grain yield and quality in most years. Grain yields and test weights of November‐planted wheats were more variable and depended on specific environmental conditions. Grain yield and test weight responses to foliar fungicide depended on severity of specific foliar diseases, cultivar disease resistance, and environmental conditions, but significant yield increase occurred 77% of the time. Planting date had no significant effect on foliar fungicide effectiveness. Foliar fungicide had no effect on grain protein, head density, or kernels per head. Results indicate that a foliar fungicide application could be beneficial in protecting grain yield and test weight potential of both hard and soft winter wheat cultivars when conditions are favorable for foliar disease epidemics in the eastern Great Plains wheat‐growing region.
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Claims 7
Claim · model-written summary
Intermediate planting dates in mid- to late October gave the best winter wheat grain yield and quality in most years.
- Taxon
- winter wheat
Triticum aestivume0 - Treatment
- Intermediate planting dates in mid‐ to late Octobere2
- Outcome
- grain yield and qualitye2
- Direction
- beste2
- Setting
- eastern Great Plainse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the eastern Great Plains, winter wheat ( Triticum aestivum L.) typically is planted from late September through November”
e2“Intermediate planting dates in mid‐ to late October resulted in the best grain yield and quality in most years”
Claim · model-written summary
Late September planting reduced grain yields of winter wheat in 2 of 6 years through barley yellow dwarf virus infection.
- Taxon
- winter wheatTriticum aestivume0
- Treatment
- late Septembere1
- Interactor
- barley yellow dwarf virus
Barley yellow dwarf viruse1pathogen - Outcome
- grain yieldse1
- Direction
- reducede1
- Qualifier
- In 2 of 6 yre1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the eastern Great Plains, winter wheat ( Triticum aestivum L.) typically is planted from late September through November”
e1“In 2 of 6 yr, grain yields of all cultivars planted in late September were reduced significantly by barley yellow dwarf virus (BYDV) infection”
Claim · model-written summary
Foliar fungicide increased winter wheat yield in 77% of cases with significant yield increase.
- Taxon
- winter wheatTriticum aestivume0
- Treatment
- foliar fungicidee4
- Outcome
- yielde4
- Direction
- increasee4
- Value
- 77%e4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the eastern Great Plains, winter wheat ( Triticum aestivum L.) typically is planted from late September through November”
e4“Grain yield and test weight responses to foliar fungicide depended on severity of specific foliar diseases, cultivar disease resistance, and environmental conditions, but significant yield increase occurred 77% of the time”
Claim · model-written summary
Planting date had no significant effect on foliar fungicide effectiveness in winter wheat.
- Taxon
- winter wheatTriticum aestivume0
- Outcome
- foliar fungicide effectivenesse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the eastern Great Plains, winter wheat ( Triticum aestivum L.) typically is planted from late September through November”
e5“Planting date had no significant effect on foliar fungicide effectiveness”
Claim · model-written summary
Foliar fungicide had no effect on grain protein, head density or kernels per head of winter wheat.
- Taxon
- winter wheatTriticum aestivume0
- Treatment
- Foliar fungicidee6
- Outcome
- grain protein, head density, or kernels per heade6
- Direction
- no effecte6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the eastern Great Plains, winter wheat ( Triticum aestivum L.) typically is planted from late September through November”
e6“Foliar fungicide had no effect on grain protein, head density, or kernels per head”
Claim · model-written summary
A foliar fungicide application could be beneficial in protecting winter wheat grain yield and test weight potential when foliar disease epidemics are favourable.
- Taxon
- winter wheatTriticum aestivume7
- Treatment
- foliar fungicide applicatione7
- Outcome
- protecting grain yield and test weight potentiale7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“Results indicate that a foliar fungicide application could be beneficial in protecting grain yield and test weight potential of both hard and soft winter wheat cultivars when conditions are favorable for foliar disease epidemics”
Claim · model-written summary
Grain yields and test weights of November-planted winter wheat were more variable and depended on environmental conditions.
- Taxon
- winter wheatTriticum aestivume0
- Treatment
- November‐plantede3
- Outcome
- Grain yields and test weightse3
- Qualifier
- depended on specific environmental conditionse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the eastern Great Plains, winter wheat ( Triticum aestivum L.) typically is planted from late September through November”
e3“Grain yields and test weights of November‐planted wheats were more variable and depended on specific environmental conditions”
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