Abstract
SummaryIn three successive seasons onion bulbing and maturity from simultaneous sowings occurred two to three weeks earlier on a sandy loam at Wellesbourne, Warwickshire (latitude 52.2°N) than on a silty soil at Holbeach, Lines (latitude 52.8°N). This difference was associated with 1–2°C higher soil temperatures and faster early seedling growth at Wellesbourne. In previous seasons high percentages of ‘thick-necked’ onions had occurred at the Holbeach site. Analysis of data from cultivar trials conducted at several sites over many seasons showed that the occurrence of a high percentage of ‘thick-necked’ plants was associated with sites, seasons or cultivars of late maturity date. Late sowing delayed bulb development and maturity, and increased nitrogen levels slightly delayed bulb development. However darkening the soil surface, thereby slightly increasing soil temperatures, had no effect on growth and development.
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Claims 6
Claim · model-written summary
Bulbing and maturity occurred two to three weeks earlier at Wellesbourne than Holbeach.
- Taxon
- onion
Allium cepae0 - Outcome
- bulbing and maturitye0
- Direction
- earliere0
- Value
- two to three weekse0
- Comparator
- Holbeach, Linese0
- Setting
- Wellesbourne, Warwickshiree0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In three successive seasons onion bulbing and maturity from simultaneous sowings occurred two to three weeks earlier on a sandy loam at Wellesbourne, Warwickshire (latitude 52.2°N) than on a silty soil at Holbeach, Lines (latitude 52.8°N).”
Claim · model-written summary
Earlier onion development at Wellesbourne was associated with warmer soil and faster early seedling growth.
- Taxon
- onionAllium cepat0
- Outcome
- This differencee0
- Qualifier
- 1–2°C higher soil temperatures and faster early seedling growthe0
- Setting
- Wellesbournee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This difference was associated with 1–2°C higher soil temperatures and faster early seedling growth at Wellesbourne.”
t0“onion bulb development”
Claim · model-written summary
High thick-necking frequency was associated with late maturity sites, seasons, or cultivars.
- Taxon
- onionAllium cepat0
- Material
- cultivarse0
- Outcome
- ‘thick-necked’ plantse0
- Qualifier
- late maturity datee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the occurrence of a high percentage of ‘thick-necked’ plants was associated with sites, seasons or cultivars of late maturity date.”
t0“onion bulb development”
Claim · model-written summary
Late sowing delayed bulb development and maturity.
- Taxon
- onionAllium cepat0
- Treatment
- Late sowinge0
- Outcome
- bulb development and maturitye0
- Direction
- delayede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Late sowing delayed bulb development and maturity”
t0“onion bulb development”
Claim · model-written summary
Increased nitrogen slightly delayed bulb development.
- Taxon
- onionAllium cepat0
- Treatment
- increased nitrogen levelse0
- Outcome
- bulb developmente0
- Direction
- delayede0
- Qualifier
- slightlye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased nitrogen levels slightly delayed bulb development”
t0“onion bulb development”
Claim · model-written summary
Darkening the soil surface had no effect on growth and development.
- Taxon
- onionAllium cepat0
- Treatment
- darkening the soil surfacee0
- Outcome
- growth and developmente0
- Direction
- no effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“darkening the soil surface, thereby slightly increasing soil temperatures, had no effect on growth and development.”
t0“onion bulb development”
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