Abstract
SUMMARY The effects of single and repeated early applications of chlormequat (at up to and including Zadoks growth stage (GS) 32) on the growth and development of the winter oat cultivar Bulwark were investigated in two seasons of field experiments at Tenby, UK. Early dry matter production, shoot initiation and subsequent shoot survival were unaffected by all treatments. At maturity, reductions in stem length and lodging were best achieved by chlormequat applied at GS 32; this treatment shortened stems by an average of 24% in 1985/86 and 31% in 1986/87. Earlier applications were significantly less effective. Grain yields were unaffected by single and repeated early applications of chlormequat. However, in both seasons, yields were significantly reduced by repeated treatments with chlormequat, including application at GS 32. Individual grain weight was the yield component principally affected.
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Claims 7
Claim · model-written summary
Early chlormequat applications did not affect dry matter production, shoot initiation or shoot survival.
- Taxon
- winter oat cultivar Bulwark
Avena sativat0 - Treatment
- all treatmentse0
- Outcome
- Early dry matter production, shoot initiation and subsequent shoot survivale0
- Direction
- unaffectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Early dry matter production, shoot initiation and subsequent shoot survival were unaffected by all treatments.”
t0“winter oat cultivar Bulwark”
Claim · model-written summary
Chlormequat at GS 32 reduced stem length by 24% in 1985/86 and 31% in 1986/87.
- Taxon
- winter oatsAvena sativat0
- Treatment
- chlormequat applied at GS 32e1
- Outcome
- stemse0
- Direction
- shortenede0
- Value
- 24% in 1985/86 and 31% in 1986/87e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“this treatment shortened stems by an average of 24% in 1985/86 and 31% in 1986/87”
t0“winter oats”
e1“chlormequat applied at GS 32”
Claim · model-written summary
Chlormequat at GS 32 best reduced lodging.
- Taxon
- winter oatsAvena sativat0
- Treatment
- chlormequat applied at GS 32e0
- Outcome
- lodginge0
- Direction
- reductionse0
- Comparator
- Earlier applicationse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“reductions in stem length and lodging were best achieved by chlormequat applied at GS 32”
t0“winter oats”
e1“Earlier applications were significantly less effective.”
Claim · model-written summary
Earlier applications were significantly less effective at reducing stem length and lodging.
- Taxon
- winter oatsAvena sativat0
- Treatment
- Earlier applicationse0
- Outcome
- reductions in stem length and lodginge1
- Direction
- less effectivee0
- Comparator
- chlormequat applied at GS 32e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Earlier applications were significantly less effective.”
t0“winter oats”
e1“reductions in stem length and lodging were best achieved by chlormequat applied at GS 32”
Claim · model-written summary
Single and repeated early chlormequat applications did not affect grain yield.
- Taxon
- winter oatsAvena sativat0
- Treatment
- single and repeated early applications of chlormequate0
- Outcome
- Grain yieldse0
- Direction
- unaffectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grain yields were unaffected by single and repeated early applications of chlormequat.”
t0“winter oats”
Claim · model-written summary
Repeated chlormequat treatment including GS 32 significantly reduced yield in both seasons.
- Taxon
- winter oatsAvena sativat0
- Treatment
- repeated treatments with chlormequat, including application at GS 32e0
- Outcome
- yieldse0
- Direction
- reducede0
- Qualifier
- in both seasonse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in both seasons, yields were significantly reduced by repeated treatments with chlormequat, including application at GS 32.”
t0“winter oats”
Claim · model-written summary
Individual grain weight was the yield component principally affected by repeated chlormequat treatment.
- Taxon
- winter oatsAvena sativat0
- Outcome
- Individual grain weighte0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Individual grain weight was the yield component principally affected.”
t0“winter oats”
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