Abstract
Superphosphate was applied in summer (December) or in autumn (March) to an existing mixed pasture of subterranean clover (Trifolium subterraneum L.) and phalaris (Phalaris tuberosa L.), growing on apodsolic soil of p H 5.8. Time of application effects were recorded at the lowest level of applied phosphate. The main effect was on the botanical composition of the pasture. The summer application favoured clover, the autumn one grass. This effect is explained as a change in the relative ability of the species to compete for superphosphate. These results suggest how time and rate of application of superphosphate may be used to manage pasture composition. In the first year, when clover growth was encouraged, the earlier application also increased the total yield of pasture. In the second and third years, changes in the yield of grass were offset by changes ill the yield of clover and the effect of time of application on total pasture yield was not significant.
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Claims 7
Claim · model-written summary
Summer superphosphate application favoured clover in the mixed pasture relative to autumn application.
- Taxon
- subterranean clover
Trifolium subterraneume0 - Treatment
- summer applicatione1
- Outcome
- clovere1
- Direction
- favourede1
- Comparator
- the autumn onee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“subterranean clover (Trifolium subterraneum L.)”
e1“The summer application favoured clover, the autumn one grass”
Claim · model-written summary
Autumn superphosphate application favoured grass in the mixed pasture relative to summer application.
PhalarisOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“phalaris (Phalaris tuberosa L.)”
e1“The summer application favoured clover, the autumn one grass”
Claim · model-written summary
The main effect of time of superphosphate application was on the botanical composition of the pasture.
- Taxon
- subterranean cloverTrifolium subterraneume0
- Treatment
- Time of applicatione1
- Outcome
- botanical composition of the pasturee1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“subterranean clover (Trifolium subterraneum L.) and phalaris (Phalaris tuberosa L.)”
e1“Time of application effects were recorded at the lowest level of applied phosphate. The main effect was on the botanical composition of the pasture”
Claim · model-written summary
In the first year, earlier superphosphate application increased total pasture yield when clover growth was encouraged.
- Taxon
- subterranean cloverTrifolium subterraneume0
- Treatment
- the earlier applicatione1
- Outcome
- total yield of pasturee1
- Direction
- increasede1
- Qualifier
- In the first yeare1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“subterranean clover (Trifolium subterraneum L.)”
e1“In the first year, when clover growth was encouraged, the earlier application also increased the total yield of pasture”
Claim · model-written summary
In the second and third years, the effect of time of application on total pasture yield was not significant because grass yield changes were offset by clover yield changes.
- Taxon
- subterranean cloverTrifolium subterraneume0
- Treatment
- time of applicatione1
- Outcome
- total pasture yielde1
- Direction
- no_changeinferrede1
- Qualifier
- In the second and third yearse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“subterranean clover (Trifolium subterraneum L.)”
e1“In the second and third years, changes in the yield of grass were offset by changes ill the yield of clover and the effect of time of application on total pasture yield was not significant”
Claim · model-written summary
The change in botanical composition is explained as a change in the relative ability of the species to compete for superphosphate.
- Taxon
- subterranean cloverTrifolium subterraneume0
- Outcome
- This effecte1
- Qualifier
- change in the relative ability of the species to compete for superphosphatee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“subterranean clover (Trifolium subterraneum L.)”
e1“This effect is explained as a change in the relative ability of the species to compete for superphosphate”
Claim · model-written summary
The authors suggest that time and rate of superphosphate application may be used to manage pasture composition.
- Taxon
- subterranean cloverTrifolium subterraneume0
- Outcome
- manage pasture compositione1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“subterranean clover (Trifolium subterraneum L.)”
e1“time and rate of application of superphosphate may be used to manage pasture composition”