Abstract
An established mixture of three herbage species was grown in 18-inch square boxes in the greenhouse for 100 days and cut at approximately 11-day intervals for yield determination. Light intensities of 1800-, 600- and 200-foot candles were supplied by combinations of natural daylight, shading, and incandescent light. Dry matter yields of orchardgrass (Dactylis glomerata) and common white clover (Trifolium repens) decreased as light intensities were decreased but creeping red fescue (Festuca rubra) yields, although low in comparison with the other species, remained relatively constant. Clover and fescue yields were not affected significantly by the height of stubble left after harvest at any of the light intensities, but at 1800 foot-candles orchardgrass yields were lower when cutting was to a 4-inch rather than to a 2-inch stubble. Clover comprised 50 to 60 per cent of the herbage mixture under all light and stubble treatments even though liberal applications of nitrogenous fertilizer were made.
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Claims 7
Claim · model-written summary
Orchardgrass dry matter yield decreased as light intensity decreased.
- Taxon
- orchardgrass (Dactylis glomerata)
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Dactylis glomeratae0 - Treatment
- light intensities were decreasede0
- Outcome
- Dry matter yieldse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Dry matter yields of orchardgrass (Dactylis glomerata) and common white clover (Trifolium repens) decreased as light intensities were decreased”
Claim · model-written summary
White clover dry matter yield decreased as light intensity decreased.
- Taxon
- common white clover (Trifolium repens)
Trifolium repense0 - Treatment
- light intensities were decreasede0
- Outcome
- Dry matter yieldse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dry matter yields of orchardgrass (Dactylis glomerata) and common white clover (Trifolium repens) decreased as light intensities were decreased”
Claim · model-written summary
Creeping red fescue yield remained relatively constant across light intensities.
- Taxon
- creeping red fescue (Festuca rubra)
Festuca rubrae0 - Outcome
- yieldse0
- Direction
- remained relatively constante0
- Comparator
- other speciese0
Not reportedTreatment
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“creeping red fescue (Festuca rubra) yields, although low in comparison with the other species, remained relatively constant”
Claim · model-written summary
Clover yield was not significantly affected by stubble height.
TrifoliumNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Clover and fescue yields were not affected significantly by the height of stubble left after harvest at any of the light intensities”
Claim · model-written summary
Fescue yield was not significantly affected by stubble height.
Not reportedComparator
Verbatim
e0“Clover and fescue yields were not affected significantly by the height of stubble left after harvest at any of the light intensities”
Claim · model-written summary
At 1800 foot-candles, orchardgrass yield was lower with 4-inch than 2-inch stubble.
- Taxon
- orchardgrassDactylis glomeratae0
- Treatment
- 4-inche0
- Outcome
- yieldse0
- Direction
- lowere0
- Qualifier
- 1800 foot-candlese0
- Comparator
- 2-inch stubblee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at 1800 foot-candles orchardgrass yields were lower when cutting was to a 4-inch rather than to a 2-inch stubble”
Claim · model-written summary
Clover comprised 50 to 60 per cent of the mixture under all light and stubble treatments.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Clover comprised 50 to 60 per cent of the herbage mixture under all light and stubble treatments”
The same questions in other papers
light · yield · Dactylis glomerata (cocksfoot)Positive and negative results
3 in the opposite direction
- positive
- positive
- positive
light · yield · Trifolium repens (white clover)Positive and negative results
4 in the opposite direction
- positive
- positive
- positive
1 paper more in this group
See all 5 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.