Abstract
The influence of planting date on fall and spring net blotch epidemics (caused by Pyrenophora teres) was evaluated with the winter barley cultivar Pennrad. Experiments were conducted in Centre County, Pennsylvania, in 1982 and 1983 and in Lancaster County, Pennsylvania, in 1983. The three planting dates evaluated corresponded to the recommended date as well as dates I wk earlier and later than recommended for each specific location. Planting date had a significant influence on fall net blotch epidemics, with the greatest and least disease severities observed in the earliest and latest plantings, respectively. When spring environmental conditions were warm and humid, previous differences in disease severities attributable to date were eliminated. With less favorable spring weather, planting date had a significant influence on spring net blotch severities. Planting date also affected yield components, specifically the number of seeds per head and the thousand-kernel weight and the calculated yield. The greatest values for these factors generally were observed for the latest planting. Applications of fungicides during the spring epidemics generally resulted in a significant decrease in disease severity and an increase in one or more yield components. Planting in mid- to late September at either location resulted in the lowest net blotch severities and greatest yields.
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Claims 7
Claim · model-written summary
Earliest planting had greatest fall net blotch severity and latest planting least.
- Taxon
- Winter Barley
.jpg?width=60)
Hordeum vulgaret0 - Treatment
- earlieste0
- Interactor
- Pyrenophora teres
Pyrenophora terese1pathogen - Outcome
- disease severitiese0
- Direction
- greateste0
- Comparator
- latest plantingse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Planting date had a significant influence on fall net blotch epidemics, with the greatest and least disease severities observed in the earliest and latest plantings, respectively.”
t0“Winter Barley”
e1“caused by Pyrenophora teres”
Claim · model-written summary
Warm humid spring conditions eliminated prior planting-date differences in disease severity.
- Taxon
- Winter BarleyHordeum vulgaret0
- Outcome
- previous differences in disease severities attributable to datee0
- Direction
- eliminatede0
- Qualifier
- spring environmental conditions were warm and humide0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When spring environmental conditions were warm and humid, previous differences in disease severities attributable to date were eliminated.”
t0“Winter Barley”
Claim · model-written summary
Planting date significantly influenced spring net blotch severity during less favorable spring weather.
- Taxon
- Winter BarleyHordeum vulgaret0
- Treatment
- planting datee0
- Outcome
- spring net blotch severitiese0
- Qualifier
- less favorable spring weathere0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With less favorable spring weather, planting date had a significant influence on spring net blotch severities.”
t0“Winter Barley”
Claim · model-written summary
Latest planting generally gave the greatest seeds per head, thousand-kernel weight, and calculated yield.
- Taxon
- Winter BarleyHordeum vulgaret0
- Treatment
- latest plantinge0
- Outcome
- number of seeds per head and the thousand-kernel weight and the calculated yielde0
- Direction
- greateste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Planting date also affected yield components, specifically the number of seeds per head and the thousand-kernel weight and the calculated yield. The greatest values for these factors generally were observed for the latest planting.”
t0“Winter Barley”
Claim · model-written summary
Spring fungicides generally significantly decreased net blotch severity.
- Taxon
- Winter BarleyHordeum vulgaret0
- Treatment
- Applications of fungicidese0
- Outcome
- disease severitye0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Applications of fungicides during the spring epidemics generally resulted in a significant decrease in disease severity”
t0“Winter Barley”
Claim · model-written summary
Spring fungicides generally increased at least one yield component.
- Taxon
- Winter BarleyHordeum vulgaret0
- Treatment
- Applications of fungicidese0
- Outcome
- one or more yield componentse0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Applications of fungicides during the spring epidemics generally resulted in a significant decrease in disease severity and an increase in one or more yield components.”
t0“Winter Barley”
Claim · model-written summary
Mid- to late-September planting produced the lowest net blotch severity and greatest yields at either location.
- Taxon
- Winter BarleyHordeum vulgaret0
- Treatment
- Planting in mid- to late Septembere0
- Outcome
- net blotch severitiese0
- Direction
- loweste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Planting in mid- to late September at either location resulted in the lowest net blotch severities and greatest yields.”
t0“Winter Barley”
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