Abstract
The influence of sward height at the time of slurry application on sward responses to slurry was investigated using perennial ryegrass ( Lolium perenne )/white clover ( Trifolium repens ) mini‐swards under greenhouse conditions. Pig slurry, cattle slurry and a fertilizer control were applied either to: swards cut 1 d before slurry application to heights of 2, 4 or 8 cm (CH2, CH4 or CH8); or to swards cut to 4 cm with regrowth intervals of 1, 4 or 8 d before slurry application (RI1, RI4 and RI8). Scorch, smother and growth of marked clover stolons and grass tillers were monitored after slurry application. Dry‐matter yields of both species were recorded over two harvests. Electrolyte leakage from leaves was used to assess leaf damage. Both slurries increased leakage, which was greatest from clover leaves, with biggest increases caused by pig slurry. Yield responses to slurry application varied with plant species and sward height. Reduced grass growth after slurry application to long swards (CH8, RI4, RI8) was probably caused by greater smother. In short swards (CH2), grass leaf growth was not depressed following slurry application but grass yields were reduced. Ammonia volatilization losses may have been greater in both long and short swards, contributing to yield reductions. Yield responses to slurry were greatest in swards cut to 4 cm, 1 d before application.
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Claims 6
Claim · model-written summary
Pig and cattle slurry increased leaf electrolyte leakage, especially in clover and most with pig slurry.
- Taxon
- white clover
Trifolium repense1 - Treatment
- pig slurrye0
- Outcome
- leakagee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both slurries increased leakage, which was greatest from clover leaves, with biggest increases caused by pig slurry”
e1“perennial ryegrass ( Lolium perenne )/white clover ( Trifolium repens ) mini‐swards”
Claim · model-written summary
Yield responses to slurry varied by plant species and sward height.
- Taxon
- perennial ryegrass
Lolium perennee1 - Treatment
- slurry applicatione0
- Outcome
- Yield responsese0
- Direction
- variede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yield responses to slurry application varied with plant species and sward height”
e1“perennial ryegrass ( Lolium perenne )/white clover ( Trifolium repens ) mini‐swards”
Claim · model-written summary
Slurry application reduced grass growth in long swards.
- Taxon
- perennial ryegrassLolium perennee1
- Treatment
- slurry applicatione0
- Outcome
- grass growthe0
- Direction
- Reducede0
- Qualifier
- long swards (CH8, RI4, RI8)e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Reduced grass growth after slurry application to long swards (CH8, RI4, RI8)”
e1“perennial ryegrass ( Lolium perenne )”
Claim · model-written summary
Grass leaf growth in short swards was not depressed after slurry application.
- Taxon
- perennial ryegrassLolium perennee1
- Treatment
- slurry applicatione0
- Outcome
- grass leaf growthe0
- Direction
- not depressede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In short swards (CH2), grass leaf growth was not depressed following slurry application”
e1“perennial ryegrass ( Lolium perenne )”
Claim · model-written summary
Grass yields in short swards were reduced after slurry application.
- Taxon
- perennial ryegrassLolium perennee1
- Treatment
- slurry applicatione0
- Outcome
- grass yieldse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In short swards (CH2), grass leaf growth was not depressed following slurry application but grass yields were reduced”
e1“perennial ryegrass ( Lolium perenne )”
Claim · model-written summary
Yield responses to slurry were greatest when swards were cut to 4 cm one day before application.
- Taxon
- perennial ryegrassLolium perennee1
- Outcome
- Yield responsese0
- Direction
- greateste0
- Qualifier
- swards cut to 4 cm, 1 d before applicatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yield responses to slurry were greatest in swards cut to 4 cm, 1 d before application”
e1“perennial ryegrass ( Lolium perenne )/white clover ( Trifolium repens ) mini‐swards”
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