Abstract
ABSTRACT During the year 1999, two glasshouse experiments (Experiments 1 and 2) were conducted at the University of Wales Aberystwyth, UK to investigate the effects of foliar applied sulfur (S) in wheat in terms of its potential as a growth regulator and to compare the effects with that of commercial growth regulators, chlormequat (CC) and gibberellic acid (GA3). In Experiment 1, the grain yield was unaffected by sulfur or growth regulator treatments. Similarly, there were no differences in the number of fertile ears at maturity. Stem characteristics were not affected with S application, but CC application reduced the average stem length; although, it did not affect the unit stem weight. The GA3 did not change stem characteristics. In Experiment 2, the grain yield was significantly reduced by CC. Stem characteristics were not affected by S application while application of CC brought about a significant reduction in the stem length and increased the unit stem weight. Applied CC reduced the stem length irrespective of the timing of its application, maintaining its versatility as a growth regulator. Grain Nitrogen (N) concentration was apparently increased; while in Experiment 2 plant N-uptake occurred significantly by foliar S application at 20 kg/ha. The work emphasized the potential role of S in a low-input wheat production system or in organic wheat production systems. Keywords: sulfurwheatgrowth regulatorschlormequatgibberellic acid ACKNOWLEDGMENTS This work was funded by the Government of Pakistan. Technical assistance was provided by Mr Andrew Brown, Miss Mary Valentine, Mr. Raymond Smith and Mr. Tom Thomas. Notes ∗Internode 1 is the uppermost internode
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Claims 13
Claim · model-written summary
In wheat, in Experiment 1, the grain yield was unaffected by sulfur or growth regulator treatments.
- Taxon
- Wheat
Triticum aestivumt0 - Treatment
- sulfur or growth regulator treatmentse0
- Outcome
- grain yielde0
- Direction
- unaffectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In Experiment 1, the grain yield was unaffected by sulfur or growth regulator treatments.”
t0“Wheat”
Claim · model-written summary
In wheat, similarly, there were no differences in the number of fertile ears at maturity.
- Taxon
- WheatTriticum aestivumt0
- Outcome
- number of fertile ears at maturitye0
- Direction
- no differencese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Similarly, there were no differences in the number of fertile ears at maturity.”
t0“Wheat”
Claim · model-written summary
In wheat, stem characteristics were not affected with S application.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- S applicatione0
- Outcome
- Stem characteristicse0
- Direction
- not affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Stem characteristics were not affected with S application”
t0“Wheat”
Claim · model-written summary
In wheat, cC application reduced the average stem length.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- CC applicatione0
- Outcome
- average stem lengthe0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CC application reduced the average stem length”
t0“Wheat”
Claim · model-written summary
In wheat, it did not affect the unit stem weight.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- CC applicatione1
- Outcome
- unit stem weighte0
- Direction
- did not affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it did not affect the unit stem weight”
t0“Wheat”
e1“CC application reduced the average stem length”
Claim · model-written summary
In wheat, the GA3 did not change stem characteristics.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- GA3e0
- Outcome
- stem characteristicse0
- Direction
- did not changee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The GA3 did not change stem characteristics.”
t0“Wheat”
Claim · model-written summary
In wheat, in Experiment 2, the grain yield was significantly reduced by CC.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- CCe0
- Outcome
- grain yielde0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In Experiment 2, the grain yield was significantly reduced by CC.”
t0“Wheat”
Claim · model-written summary
In wheat, stem characteristics were not affected by S application.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- S applicatione0
- Outcome
- Stem characteristicse0
- Direction
- not affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Stem characteristics were not affected by S application”
t0“Wheat”
Claim · model-written summary
In wheat, application of CC brought about a significant reduction in the stem length.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- CCe0
- Outcome
- stem lengthe0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of CC brought about a significant reduction in the stem length”
t0“Wheat”
Claim · model-written summary
In wheat, application of CC brought about a significant reduction in the stem length and increased the unit stem weight.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- CCe0
- Outcome
- unit stem weighte0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of CC brought about a significant reduction in the stem length and increased the unit stem weight”
t0“Wheat”
Claim · model-written summary
In wheat, applied CC reduced the stem length irrespective of the timing of its application.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- CCe0
- Outcome
- stem lengthe0
- Direction
- reducede0
- Qualifier
- irrespective of the timing of its applicatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Applied CC reduced the stem length irrespective of the timing of its application”
t0“Wheat”
Claim · model-written summary
In wheat, grain Nitrogen (N) concentration was apparently increased.
- Taxon
- WheatTriticum aestivumt0
- Outcome
- Grain Nitrogen (N) concentratione0
- Direction
- increasede0
- Qualifier
- apparentlye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grain Nitrogen (N) concentration was apparently increased”
t0“Wheat”
Claim · model-written summary
In wheat, in Experiment 2 plant N-uptake occurred significantly by foliar S application at 20 kg/ha.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- foliar S application at 20 kg/hae0
- Outcome
- plant N-uptakee0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in Experiment 2 plant N-uptake occurred significantly by foliar S application at 20 kg/ha”
t0“Wheat”
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