Abstract
SUMMARY The benefits to establishment and growth of white clover cvs Aberystwyth S.184 and Grasslands Huia of inoculation with three strains of Rhizobium trifolii , using the peat or liquid inoculum techniques, were investigated during 1975–8 on improved hill soils ranging from brown earth through dry and wet peaty podzol to deep peat. Inoculation induced positive response in either number of seedlings, plant cover or dry-matter production in 18 out of 139 comparisons, had no effect in 118 and produced a negative response in three. Most of the positive responses to inoculation were at sites with wet peaty podzol or deep peat soils but of the five sites where increase in clover D.M. production was found in the first harvest year one was a brown earth. The positive agronomic responses occurred only when the proportion of plants with nodules was high and where a substantial proportion ( > 50%) of the latter contained introduced Rhizobium strains at least in the year of sowing. The three negative responses were in numbers of seedlings on one brown earth and two dry peaty podzol soils and with the Huia cultivar only. Despite lack of statistical significance at individual sites the dominant overall trend was for inoculation to enhance seedling establishment and the early growtli of white clover in all soil types. On one brown earth and one dry peaty podzol soil there was some evidence that spraying the Rhizobium on to emerging white clover seedlings was more beneficial, atleast in microbiological terms, than the customary peat inoculum procedure. The incorporation of even a small amount of nitrogen (30 kg/ha) into the seed bed at the time of sowing adversely affected germination, establishment and growth of white clover in some soils. Sometimes the effects of this nitrogen persisted into the first harvest year.
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Claims 11
Claim · model-written summary
Rhizobium inoculation gave positive establishment or growth responses in 18 of 139 comparisons.
- Taxon
- white clover
Trifolium repenst0 - Treatment
- Inoculatione0
- Outcome
- number of seedlings, plant cover or dry-matter productione0
- Direction
- positive responsee0
- Value
- 18 out of 139 comparisonse0
Not reportedInteractorComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Inoculation induced positive response in either number of seedlings, plant cover or dry-matter production in 18 out of 139 comparisons”
t0“white clover”
Claim · model-written summary
Inoculation had no effect in 118 comparisons.
- Taxon
- white cloverTrifolium repenst0
- Treatment
- Inoculatione0
- Outcome
- number of seedlings, plant cover or dry-matter productione0
- Direction
- had no effecte0
- Value
- 118e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Inoculation induced positive response in either number of seedlings, plant cover or dry-matter production in 18 out of 139 comparisons, had no effect in 118”
t0“white clover”
Claim · model-written summary
Inoculation produced a negative response in three comparisons.
- Taxon
- white cloverTrifolium repenst0
- Treatment
- Inoculatione0
- Outcome
- number of seedlings, plant cover or dry-matter productione0
- Direction
- negative responsee0
- Value
- threee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Inoculation induced positive response in either number of seedlings, plant cover or dry-matter production in 18 out of 139 comparisons, had no effect in 118 and produced a negative response in three”
t0“white clover”
Claim · model-written summary
Most positive inoculation responses occurred on wet peaty podzol or deep peat soils.
- Taxon
- white cloverTrifolium repenst0
- Outcome
- positive responsese0
- Setting
- wet peaty podzol or deep peat soilse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Most of the positive responses to inoculation were at sites with wet peaty podzol or deep peat soils”
t0“white clover”
Claim · model-written summary
One of five sites with increased first-year clover dry matter production was brown earth.
TrifoliumOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“of the five sites where increase in clover D.M. production was found in the first harvest year one was a brown earth”
Claim · model-written summary
Positive agronomic responses occurred only with high nodulation and more than 50% introduced Rhizobium strains in nodules.
- Taxon
- plantsViridiplantaee0
- Outcome
- positive agronomic responsese0
- Value
- > 50%e0
- Qualifier
- proportion of plants with nodules was highe0
RhizobiumNot reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The positive agronomic responses occurred only when the proportion of plants with nodules was high and where a substantial proportion ( > 50%) of the latter contained introduced Rhizobium strains at least in the year of sowing”
Claim · model-written summary
Negative seedling responses occurred only for Huia on one brown earth and two dry peaty podzol soils.
- Material
- Huiae0
- Outcome
- numbers of seedlingse0
- Direction
- negative responsese0
- Setting
- brown earth and two dry peaty podzol soilse0
_Figure_4_(cropped).jpg?width=60){kind=small}
HuiaOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
_Figure_4_(cropped).jpg?width=500)
Verbatim
e0“The three negative responses were in numbers of seedlings on one brown earth and two dry peaty podzol soils and with the Huia cultivar only”
Claim · model-written summary
Overall inoculation tended to improve white clover seedling establishment and early growth, although individual sites lacked statistical significance.
- Taxon
- white cloverTrifolium repenst0
- Treatment
- inoculatione0
- Outcome
- seedling establishment and the early growtlie0
- Direction
- enhancee0
- Setting
- all soil typese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Despite lack of statistical significance at individual sites the dominant overall trend was for inoculation to enhance seedling establishment and the early growtli of white clover in all soil types”
t0“white clover”
Claim · model-written summary
Spraying Rhizobium onto emerging seedlings showed some microbiological benefit over peat inoculum at two sites.
- Taxon
- white cloverTrifolium repenst0
- Treatment
- spraying the Rhizobium on to emerging white clover seedlingse0
- Outcome
- more beneficiale0
- Direction
- more beneficiale0
- Comparator
- customary peat inoculum proceduree0
- Setting
- one brown earth and one dry peaty podzol soile0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“On one brown earth and one dry peaty podzol soil there was some evidence that spraying the Rhizobium on to emerging white clover seedlings was more beneficial, atleast in microbiological terms, than the customary peat inoculum procedure”
t0“white clover”
Claim · model-written summary
Seed-bed nitrogen adversely affected white clover germination, establishment and growth in some soils.
- Taxon
- white cloverTrifolium repenst0
- Treatment
- nitrogen (30 kg/ha)e0
- Outcome
- germination, establishment and growthe0
- Direction
- adversely affectede0
- Value
- 30 kg/hae0
- Setting
- some soilse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The incorporation of even a small amount of nitrogen (30 kg/ha) into the seed bed at the time of sowing adversely affected germination, establishment and growth of white clover in some soils”
t0“white clover”
Claim · model-written summary
Nitrogen effects sometimes persisted into the first harvest year.
- Taxon
- white cloverTrifolium repenst0
- Outcome
- effects of this nitrogene0
- Direction
- persistede0
- Qualifier
- first harvest yeare0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sometimes the effects of this nitrogen persisted into the first harvest year”
t0“white clover”
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See all 10 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.