Abstract
Early seeding is a recommended cultural practice to insure maximum yield of spring‐seeded oat ( Avena sativa L.). However, in the lower Midwest, research involving modern cultivars to support this claim is lacking. Spring oat cultivars Heritage, Ogle and Porter were sown during three seeding periods, 3 to 10 April (early), 24 April to 1 May (moderately late) and 16 to 22 May (late) at Wooster, OH in 1986 and 1987. Grain yield, yield components and growth duration were evaluated. Delaying seeding from the earliest to the latest date reduced yields by an average of 41% in the 1986 season and 24% in the 1987 season. In 1986 seeds per panicle decreased 24% and in 1986 and 1987, number of panicles per square foot decreased by 17 and 35%, respectively, when seeding was delayed. The decrease of 15 seeds/panicle in 1986 occurred in spite of a 14% increase in florets per panicle. Growth duration decreased by 23% in the 1986 season and 25% in the 1987 season as a result of delayed seeding when comparing early and late‐seeding periods. Grain‐filling period also decreased as a result of delayed seeding. The greater number of florets produced when seeding was delayed was most likely a compensation effect due to fewer panicles per square foot. However, when seeding was delayed, anthesis, seed set and grain fill took place under less favorable conditions due primarily to high temperatures in late June to mid‐July. This resulted in an overall reduction in seed set and kernel weight compared to earlier plantings.
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Claims 10
Claim · model-written summary
Late seeding reduced oat yield by 41% in 1986.
- Taxon
- oat
Avena sativat0 - Treatment
- Delaying seedinge0
- Outcome
- yieldse0
- Direction
- reducede0
- Value
- 41%e0
- Comparator
- earlieste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Delaying seeding from the earliest to the latest date reduced yields by an average of 41% in the 1986 season and 24% in the 1987 season”
t0“Oat”
Claim · model-written summary
Late seeding reduced oat yield by 24% in 1987.
- Taxon
- oatAvena sativat0
- Treatment
- Delaying seedinge0
- Outcome
- yieldse0
- Direction
- reducede0
- Value
- 24%e0
- Comparator
- earlieste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Delaying seeding from the earliest to the latest date reduced yields by an average of 41% in the 1986 season and 24% in the 1987 season”
t0“Oat”
Claim · model-written summary
Late seeding reduced seeds per panicle by 24% in 1986.
- Taxon
- oatAvena sativat0
- Treatment
- delayed seedinge1
- Outcome
- seeds per paniclee0
- Direction
- decreasede0
- Value
- 24%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In 1986 seeds per panicle decreased 24%”
t0“Oat”
e1“as a result of delayed seeding when comparing early”
Claim · model-written summary
Late seeding reduced panicle density by 17% in 1986.
- Taxon
- oatAvena sativat0
- Treatment
- seeding was delayede0
- Outcome
- number of panicles per square foote0
- Direction
- decreasede0
- Value
- 17e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in 1986 and 1987, number of panicles per square foot decreased by 17 and 35%, respectively, when seeding was delayed”
t0“Oat”
Claim · model-written summary
Late seeding reduced panicle density by 35% in 1987.
- Taxon
- oatAvena sativat0
- Treatment
- seeding was delayede0
- Outcome
- number of panicles per square foote0
- Direction
- decreasede0
- Value
- 35%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in 1986 and 1987, number of panicles per square foot decreased by 17 and 35%, respectively, when seeding was delayed”
t0“Oat”
Claim · model-written summary
Delayed seeding increased florets per panicle by 14%.
- Taxon
- oatAvena sativat0
- Treatment
- delayed seedinge1
- Outcome
- florets per paniclee0
- Direction
- increasee0
- Value
- 14%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a 14% increase in florets per panicle”
t0“Oat”
e1“as a result of delayed seeding when comparing early”
Claim · model-written summary
Late seeding shortened growth duration by 23% in 1986.
- Taxon
- oatAvena sativat0
- Treatment
- delayed seedinge0
- Outcome
- Growth duratione0
- Direction
- decreasede0
- Value
- 23%e0
- Comparator
- earlye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Growth duration decreased by 23% in the 1986 season and 25% in the 1987 season as a result of delayed seeding when comparing early and late‐seeding periods”
t0“Oat”
Claim · model-written summary
Late seeding shortened growth duration by 25% in 1987.
- Taxon
- oatAvena sativat0
- Treatment
- delayed seedinge0
- Outcome
- Growth duratione0
- Direction
- decreasede0
- Value
- 25%e0
- Comparator
- earlye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Growth duration decreased by 23% in the 1986 season and 25% in the 1987 season as a result of delayed seeding when comparing early and late‐seeding periods”
t0“Oat”
Claim · model-written summary
Delayed seeding shortened grain filling.
- Taxon
- oatAvena sativat0
- Treatment
- delayed seedinge0
- Outcome
- Grain‐filling periode0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grain‐filling period also decreased as a result of delayed seeding”
t0“Oat”
Claim · model-written summary
Delayed seeding reduced seed set and kernel weight.
- Taxon
- oatAvena sativat0
- Treatment
- delayed seedinge1
- Outcome
- seed set and kernel weighte0
- Direction
- reductione0
- Comparator
- earlier plantingse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This resulted in an overall reduction in seed set and kernel weight compared to earlier plantings”
t0“Oat”
e1“as a result of delayed seeding when comparing early”
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