Abstract
Abstract ‘Orlando’ tangelo ( Citrus reticulata Blanco × Citrus paradisi Macf.) trees not irrigated in the fall, but protected by under-tree sprinkling during a frost, sustained the lowest percentage of leaf and fruit damage as determined 6 weeks after the frost. Trees irrigated both in the fall and during a frost, or those receiving no fall irrigation or under-tree sprinkling, were intermediate in fruit damage. Fall irrigation without sprinkling the night of a frost contributed to the most severe damage to leaves and fruit. Soil moisture content of irrigated blocks was significantly greater than for non-irrigated blocks during the fall, yet afternoon leaf xylem water potential and stem water content were comparable. Leaf freezing point of detached leaves of ‘Orlando’ and navel orange ( Citrus sinensis (L.) Osbeck) was poorly correlated with leaf xylem water potential, abaxial diffusion resistance, and relative water content. Leaf freezing and killing temperature was unaffected by fall irrigation and ranged from -5.8 to -6.8°C from October until December in 1978 and 1979.
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Claims 6
Claim · model-written summary
Unirrigated fall trees given under-tree sprinkling had the lowest leaf and fruit damage.
- Taxon
- Citrus reticulata Blanco × Citrus paradisi Macf.
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Citrus reticulatae0 - Material
- ‘Orlando’ tangeloe0
- Treatment
- not irrigated in the fall, but protected by under-tree sprinkling during a froste0
- Outcome
- leaf and fruit damagee0
- Direction
- loweste0
- Qualifier
- 6 weeks after the froste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“‘Orlando’ tangelo ( Citrus reticulata Blanco × Citrus paradisi Macf.) trees not irrigated in the fall, but protected by under-tree sprinkling during a frost, sustained the lowest percentage of leaf and fruit damage as determined 6 weeks after the frost.”
Claim · model-written summary
Fall irrigation without frost sprinkling caused the most severe leaf and fruit damage.
- Treatment
- Fall irrigation without sprinkling the night of a froste0
- Outcome
- damage to leaves and fruite0
- Direction
- most severee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fall irrigation without sprinkling the night of a frost contributed to the most severe damage to leaves and fruit.”
t0“Citrus”
Claim · model-written summary
Irrigated blocks had greater fall soil moisture than non-irrigated blocks.
- Treatment
- irrigated blockse0
- Outcome
- Soil moisture contente0
- Direction
- significantly greatere0
- Comparator
- non-irrigated blockse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soil moisture content of irrigated blocks was significantly greater than for non-irrigated blocks during the fall, yet afternoon leaf xylem water potential and stem water content were comparable.”
t0“Citrus”
Claim · model-written summary
Leaf xylem water potential and stem water content were comparable across irrigation groups.
- Treatment
- irrigated blockse0
- Outcome
- afternoon leaf xylem water potential and stem water contente0
- Direction
- comparablee0
- Comparator
- non-irrigated blockse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soil moisture content of irrigated blocks was significantly greater than for non-irrigated blocks during the fall, yet afternoon leaf xylem water potential and stem water content were comparable.”
t0“Citrus”
Claim · model-written summary
Leaf freezing point was poorly correlated with three water relation traits.
- Taxon
- Citrus sinensis (L.) Osbeck
Citrus sinensise0 - Organ / stage
- detached leavese0
- Outcome
- Leaf freezing pointe0
- Qualifier
- poorly correlated with leaf xylem water potential, abaxial diffusion resistance, and relative water contente0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Leaf freezing point of detached leaves of ‘Orlando’ and navel orange ( Citrus sinensis (L.) Osbeck) was poorly correlated with leaf xylem water potential, abaxial diffusion resistance, and relative water content.”
Claim · model-written summary
Fall irrigation did not alter leaf freezing and killing temperature.
- Treatment
- fall irrigatione0
- Outcome
- Leaf freezing and killing temperaturee0
- Direction
- unaffectede0
- Value
- -5.8 to -6.8°Ce0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Leaf freezing and killing temperature was unaffected by fall irrigation and ranged from -5.8 to -6.8°C from October until December in 1978 and 1979.”
t0“Citrus”
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- positive
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irrigation · pest · CitrusResults agree
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- no effect
- negative
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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.