Abstract
SUMMARY Elemental sulphur (32 kg S/ha) and urea (30 kg N/ha) were applied to the foliage of different winter wheat cultivars, halfat flag leaf emergence and halfat ear emergence, in factorial experiments in 1986, 1987 and 1988. There were no clear visual symptoms of S deficiency, but there was evidence from soil analysis, grain S concentration and grain N:S ratio that the crops were marginally deficient in sulphur. Disease severity was generally negligible. Leaf senescence at the end of grain growth was delayed by sulphur in two of the three years, both with and without urea in 1987, but only with urea in 1988. Sulphur, both alone and mixed with urea, increased grain S concentration from early grain growth in 1986 and 1987, but not until the end of grain growth in 1988. Urea alone reduced yield in 1986 and 1987, but mixing S with the urea compensated for this phytotoxic effect. Yield was not significantly increased by S when compared with plots receiving neither urea nor S.
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Claims 7
Claim · model-written summary
Sulphur delayed leaf senescence at the end of grain growth in two of the three years.
- Taxon
- winter wheat
Triticum aestivumt0 - Treatment
- sulphure0
- Outcome
- Leaf senescencee0
- Direction
- delayede0
- Qualifier
- in two of the three years, both with and without urea in 1987, but only with urea in 1988e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effects of foliar-applied sulphur and nitrogen on grain growth, grain sulphur and nitrogen concentrations and yield of winter wheat”
e0“Leaf senescence at the end of grain growth was delayed by sulphur in two of the three years, both with and without urea in 1987, but only with urea in 1988”
Claim · model-written summary
Sulphur increased grain S concentration from early grain growth in 1986 and 1987, but not until the end of grain growth in 1988.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- Sulphure1
- Outcome
- grain S concentratione1
- Direction
- increasede1
- Qualifier
- from early grain growth in 1986 and 1987, but not until the end of grain growth in 1988e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effects of foliar-applied sulphur and nitrogen on grain growth, grain sulphur and nitrogen concentrations and yield of winter wheat”
e1“Sulphur, both alone and mixed with urea, increased grain S concentration from early grain growth in 1986 and 1987, but not until the end of grain growth in 1988”
Claim · model-written summary
Urea alone reduced wheat yield in 1986 and 1987.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- Urea alonee2
- Outcome
- yielde2
- Direction
- reducede2
- Qualifier
- in 1986 and 1987e2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effects of foliar-applied sulphur and nitrogen on grain growth, grain sulphur and nitrogen concentrations and yield of winter wheat”
e2“Urea alone reduced yield in 1986 and 1987”
Claim · model-written summary
Mixing sulphur with urea compensated for the phytotoxic effect of urea alone on wheat.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- mixing S with the ureae3
- Outcome
- phytotoxic effecte3
- Direction
- compensatede3
- Comparator
- Urea alonee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effects of foliar-applied sulphur and nitrogen on grain growth, grain sulphur and nitrogen concentrations and yield of winter wheat”
e2“Urea alone reduced yield in 1986 and 1987”
e3“but mixing S with the urea compensated for this phytotoxic effect”
Claim · model-written summary
Sulphur did not significantly increase wheat yield compared with plots receiving neither urea nor S.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- Se4
- Outcome
- Yielde4
- Direction
- not significantly increasede4
- Comparator
- plots receiving neither urea nor Se4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effects of foliar-applied sulphur and nitrogen on grain growth, grain sulphur and nitrogen concentrations and yield of winter wheat”
e4“Yield was not significantly increased by S when compared with plots receiving neither urea nor S”
Claim · model-written summary
Disease severity in the wheat crops was generally negligible.
- Taxon
- winter wheatTriticum aestivumt0
- Outcome
- Disease severitye5
- Qualifier
- generally negligiblee5
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effects of foliar-applied sulphur and nitrogen on grain growth, grain sulphur and nitrogen concentrations and yield of winter wheat”
e5“Disease severity was generally negligible”
Claim · model-written summary
The wheat crops were marginally deficient in sulphur, although no clear visual symptoms of S deficiency were seen.
- Taxon
- winter wheatTriticum aestivumt0
- Outcome
- marginally deficient in sulphure6
- Qualifier
- soil analysis, grain S concentration and grain N:S ratioe6
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effects of foliar-applied sulphur and nitrogen on grain growth, grain sulphur and nitrogen concentrations and yield of winter wheat”
e6“There were no clear visual symptoms of S deficiency, but there was evidence from soil analysis, grain S concentration and grain N:S ratio that the crops were marginally deficient in sulphur”
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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.