Abstract
Fertilizer application and grazing management were shown to be important factors affecting trends in botanical composition in a 5-year-old perennial ryegrass–white clover pasture showing signs of pasture degeneration. In the absence of continuing superphosphate application, native and weed species invaded the pasture, irrespective of grazing management. However, where superphosphate was applied at 500 kg ha-1 year-1, the subsequent trends in botanical composition were dependent on the grazing strategy used. Pastures which were intensively grazed during the winter-spring period were invaded by red grass and other native grass species following a decline in the perennial ryegrass component, whatever the grazing management of other times of the year. In contrast, lax grazing, or pasture spelling, during this winter-spring period led to an increase in the basal area of ryegrass and checked the encroachment of unsown species. The role of superphosphate and grazing management in maintaining stable and productive pastures on the Northern Tablelands of New South Wales is discussed. Part I, Aust. J. Agric. Res., 29: 9 (1978).
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Claims 7
Claim · model-written summary
Fertilizer and grazing management affected botanical composition trends.
Verbatim
e0“Fertilizer application and grazing management were shown to be important factors affecting trends in botanical composition in a 5-year-old perennial ryegrass–white clover pasture”
Claim · model-written summary
Without continuing superphosphate, native and weed species invaded regardless of grazing.
- Taxon
- perennial ryegrass–white clover pasturet0
- Treatment
- absence of continuing superphosphate applicatione0
- Interactor
- weed speciese0weed
- Outcome
- native and weed species invaded the pasturee0
Not reportedComparatorDirection
Verbatim
e0“In the absence of continuing superphosphate application, native and weed species invaded the pasture, irrespective of grazing management”
t0“perennial ryegrass–white clover pasture”
Claim · model-written summary
With 500 kg ha-1 year-1 superphosphate, botanical composition depended on grazing strategy.
- Taxon
- perennial ryegrass–white clover pasturet0
- Treatment
- superphosphate was applied at 500 kg ha-1 year-1e0
- Outcome
- trends in botanical compositione0
Not reportedComparatorDirection
Verbatim
e0“where superphosphate was applied at 500 kg ha-1 year-1, the subsequent trends in botanical composition were dependent on the grazing strategy used”
t0“perennial ryegrass–white clover pasture”
Claim · model-written summary
Intensive winter-spring grazing led to red grass and native grass invasion.
- Taxon
- perennial ryegrass–white clover pasturet0
- Treatment
- intensively grazed during the winter-spring periode0
- Interactor
- red grasse0weed
- Outcome
- invaded by red grass and other native grass speciese0
Not reportedComparatorDirection
Verbatim
e0“Pastures which were intensively grazed during the winter-spring period were invaded by red grass and other native grass species”
t0“perennial ryegrass–white clover pasture”
Claim · model-written summary
Intensive winter-spring grazing was followed by a decline in perennial ryegrass.
- Taxon
- perennial ryegrass
Lolium perennee0 - Outcome
- decline in the perennial ryegrass componente0
- Direction
- declinee0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“following a decline in the perennial ryegrass component”
Claim · model-written summary
Lax grazing or spelling in winter-spring increased ryegrass basal area.
LoliumNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“lax grazing, or pasture spelling, during this winter-spring period led to an increase in the basal area of ryegrass”
Claim · model-written summary
Lax grazing or spelling in winter-spring checked encroachment by unsown species.
- Taxon
- perennial ryegrass–white clover pasturet0
- Treatment
- lax grazing, or pasture spellinge0
- Interactor
- unsown speciese0weed
- Outcome
- encroachment of unsown speciese0
- Direction
- checkede0
Not reportedComparator
Verbatim
e0“lax grazing, or pasture spelling, during this winter-spring period led to an increase in the basal area of ryegrass and checked the encroachment of unsown species”
t0“perennial ryegrass–white clover pasture”
The same questions in other papers
phosphorus · weed · Lolium perenne (perennial ryegrass)Positive and negative results
1 in the opposite direction
- positive
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.