Abstract
Abstract Plant growth and cut flower yield of ‘Sonora’ roses ( Rosa hybrida L.) were increased by soil heating to 25°C at 16° (day)/11° (night), a suboptimal air temperature, in a pot experiment in which differential temperature treatments were imposed immediately after planting. Soil heating at 20° (day)/16° (night) a near optimum air temperature, initially increased the growth rate and shortened the time to flower but growth and flower quality declined when a fertility level for winter production was used. Weak growth and chlorotic foliage on roses growing in heated soil were corrected by use of a higher level of nutrition. Higher air temperature caused earlier bud break after a major peak in flower production but subsequent shoot development was not greatly affected by air temperature. Soil heating increased the number of bottom breaks.
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Claims 8
Claim · model-written summary
Soil heating to 25°C increased rose growth and cut flower yield at suboptimal air temperature.
- Taxon
- rosese0
- Material
- ‘Sonora’e0
- Treatment
- soil heating to 25°Ce0
- Outcome
- Plant growth and cut flower yielde0
- Direction
- increasede0
- Qualifier
- at 16° (day)/11° (night)e0
Not reportedComparator
Verbatim
e0“Plant growth and cut flower yield of ‘Sonora’ roses ( Rosa hybrida L.) were increased by soil heating to 25°C at 16° (day)/11° (night)”
Claim · model-written summary
At near-optimal air temperature, soil heating initially increased growth rate.
- Taxon
- rosest0
- Treatment
- Soil heatinge0
- Outcome
- growth ratee0
- Direction
- increasede0
- Qualifier
- at 20° (day)/16° (night)e0
Not reportedComparator
Verbatim
e0“Soil heating at 20° (day)/16° (night) a near optimum air temperature, initially increased the growth rate”
t0“Roses”
Claim · model-written summary
At near-optimal air temperature, soil heating shortened time to flower.
- Taxon
- rosest0
- Treatment
- Soil heatinge0
- Outcome
- time to flowere0
- Direction
- shortenede0
- Qualifier
- at 20° (day)/16° (night)e0
Not reportedComparator
Verbatim
e0“Soil heating at 20° (day)/16° (night) a near optimum air temperature, initially increased the growth rate and shortened the time to flower”
t0“Roses”
Claim · model-written summary
With winter-production fertility, growth and flower quality subsequently declined.
Verbatim
e0“growth and flower quality declined when a fertility level for winter production was used”
t0“Roses”
Claim · model-written summary
Higher nutrition corrected weak growth and chlorotic foliage in roses in heated soil.
- Taxon
- rosese0
- Treatment
- higher level of nutritione0
- Outcome
- Weak growth and chlorotic foliagee0
- Direction
- correctede0
- Qualifier
- growing in heated soile0
Not reportedComparator
Verbatim
e0“Weak growth and chlorotic foliage on roses growing in heated soil were corrected by use of a higher level of nutrition”
Claim · model-written summary
Higher air temperature caused earlier bud break after a major flower-production peak.
- Taxon
- rosest0
- Treatment
- Higher air temperaturee0
- Outcome
- bud breake0
- Direction
- earliere0
- Qualifier
- after a major peak in flower productione0
Not reportedComparator
Verbatim
e0“Higher air temperature caused earlier bud break after a major peak in flower production”
t0“Roses”
Claim · model-written summary
Air temperature did not greatly affect subsequent shoot development.
- Taxon
- rosest0
- Treatment
- air temperaturee0
- Outcome
- subsequent shoot developmente0
- Direction
- not greatly affectede0
Not reportedComparator
Verbatim
e0“subsequent shoot development was not greatly affected by air temperature”
t0“Roses”
Claim · model-written summary
Soil heating increased the number of bottom breaks.
Not reportedComparator
Verbatim
e0“Soil heating increased the number of bottom breaks”
t0“Roses”
The same questions in other papers
heat · yield · RosaPositive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction · 1 reporting no difference from an alternative
- positive
- negative
- no effect
heat · growth · RosaPositive and negative results
1 paper in the same direction as this paper · 6 in the opposite direction
- negative
- negative
- negative
4 papers more in this group
See all 8 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.