Abstract
SUMMARY Urea (supplying 15 kg N/ha) applied to winter wheat ( Triticum aestivum ) at flag leaf emergence and again at ear emergence improved grain yield in only two, but increased grain nitrogen (N) in four out of five experiments. The size of the improvements in yield and nitrogen content differed over varying sites and seasons but were not affected by cultivar or propiconazole (250 g a.i./ha) plus tridemorph (500 g a.i./ha) fungicide applied with the urea. Breadmaking quality was assessed on grain from one site in 1985 and in 1986. The beneficial effects on loaf quality of urea and fungicide applied separately were reduced when they were applied as a mixture. In 1986 this negative interaction was associated with effects on sodium dodecyl sulphate (SDS) sedimentation volume, flour sulphur content (S), N/S ratio and dough resistance. The effect of urea also interacted with cultivar on SDS sedimentation volume in 1985 and dough resistance in 1986.
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Claims 9
Claim · model-written summary
Urea at 15 kg N/ha applied at flag leaf and ear emergence improved winter wheat grain yield in only two of five experiments.
- Taxon
- winter wheat
Triticum aestivume1 - Treatment
- Urea (supplying 15 kg N/ha)e1
- Outcome
- grain yielde1
- Direction
- improvede1
- Qualifier
- in only twoe1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Urea (supplying 15 kg N/ha) applied to winter wheat ( Triticum aestivum ) at flag leaf emergence and again at ear emergence improved grain yield in only two, but increased grain nitrogen (N) in four out of five experiments”
Claim · model-written summary
Urea at 15 kg N/ha applied at flag leaf and ear emergence increased winter wheat grain nitrogen in four of five experiments.
- Taxon
- winter wheatTriticum aestivume1
- Treatment
- Urea (supplying 15 kg N/ha)e1
- Outcome
- grain nitrogen (N)e1
- Direction
- increasede1
- Qualifier
- in four out of five experimentse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Urea (supplying 15 kg N/ha) applied to winter wheat ( Triticum aestivum ) at flag leaf emergence and again at ear emergence improved grain yield in only two, but increased grain nitrogen (N) in four out of five experiments”
Claim · model-written summary
The fungicide propiconazole plus tridemorph applied with urea did not change the size of the urea improvements in wheat yield and nitrogen content, and cultivar did not either.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- propiconazole (250 g a.i./ha) plus tridemorph (500 g a.i./ha) fungicidee2
- Outcome
- size of the improvements in yield and nitrogen contente2
- Direction
- not affectede2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“The size of the improvements in yield and nitrogen content differed over varying sites and seasons but were not affected by cultivar or propiconazole (250 g a.i./ha) plus tridemorph (500 g a.i./ha) fungicide applied with the urea”
t0“Effects of urea alone or with fungicide on the yield and breadmaking quality of wheat when sprayed at flag leaf and ear emergence”
Claim · model-written summary
The size of the urea improvements in wheat yield and nitrogen content differed over varying sites and seasons.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- size of the improvements in yield and nitrogen contente2
- Setting
- varying sites and seasonse2
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“The size of the improvements in yield and nitrogen content differed over varying sites and seasons but were not affected by cultivar or propiconazole (250 g a.i./ha) plus tridemorph (500 g a.i./ha) fungicide applied with the urea”
t0“Effects of urea alone or with fungicide on the yield and breadmaking quality of wheat when sprayed at flag leaf and ear emergence”
Claim · model-written summary
Urea and fungicide applied as a mixture reduced the beneficial effects on wheat loaf quality that each gave when applied separately.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- applied as a mixturee3
- Outcome
- beneficial effects on loaf qualitye3
- Direction
- reducede3
- Comparator
- applied separatelye3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“The beneficial effects on loaf quality of urea and fungicide applied separately were reduced when they were applied as a mixture”
t0“Effects of urea alone or with fungicide on the yield and breadmaking quality of wheat when sprayed at flag leaf and ear emergence”
Claim · model-written summary
In 1986 the negative urea-fungicide interaction was associated with effects on SDS sedimentation volume, flour sulphur content and N/S ratio of wheat.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- sodium dodecyl sulphate (SDS) sedimentation volume, flour sulphur content (S), N/S ratioe4
- Setting
- In 1986e4
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“In 1986 this negative interaction was associated with effects on sodium dodecyl sulphate (SDS) sedimentation volume, flour sulphur content (S), N/S ratio and dough resistance”
t0“Effects of urea alone or with fungicide on the yield and breadmaking quality of wheat when sprayed at flag leaf and ear emergence”
Claim · model-written summary
In 1986 the negative urea-fungicide interaction was associated with effects on wheat dough resistance.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- dough resistancee4
- Setting
- In 1986e4
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“In 1986 this negative interaction was associated with effects on sodium dodecyl sulphate (SDS) sedimentation volume, flour sulphur content (S), N/S ratio and dough resistance”
t0“Effects of urea alone or with fungicide on the yield and breadmaking quality of wheat when sprayed at flag leaf and ear emergence”
Claim · model-written summary
The effect of urea interacted with wheat cultivar on SDS sedimentation volume in 1985.
- Taxon
- wheatTriticum aestivumt0
- Material
- cultivare5
- Treatment
- ureae5
- Outcome
- SDS sedimentation volumee5
- Setting
- in 1985e5
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“The effect of urea also interacted with cultivar on SDS sedimentation volume in 1985 and dough resistance in 1986.”
t0“Effects of urea alone or with fungicide on the yield and breadmaking quality of wheat when sprayed at flag leaf and ear emergence”
Claim · model-written summary
The effect of urea interacted with wheat cultivar on dough resistance in 1986.
- Taxon
- wheatTriticum aestivumt0
- Material
- cultivare5
- Treatment
- ureae5
- Outcome
- dough resistancee5
- Setting
- in 1986e5
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“The effect of urea also interacted with cultivar on SDS sedimentation volume in 1985 and dough resistance in 1986.”
t0“Effects of urea alone or with fungicide on the yield and breadmaking quality of wheat when sprayed at flag leaf and ear emergence”
The same questions in other papers
nitrogen · yield · Triticum aestivum (wheat)Positive and negative results
1,736 papers in the same direction as this paper · 285 in the opposite direction · 39 reporting no difference from an alternative
- no effect
- no effect
- negative
2,057 papers more in this group
See all 2,061 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.