Abstract
Growth and flowering of Cymbidium 'Red Fire' and 'Yokihi' plants were examined in a greenhouse with cooling systems in summer, and with night interruption (NI) lighting in winter as a forcing culture system. The greenhouse was divided into two sections with separate cooling controls during the summer season. One section was cooled by a mist system (mist), while the other section was cooled by a shade screen (shade). During the winter, the greenhouse was redivided into three sections within each cooling system. Plants were grown with NI either at a low light intensity of $3-7{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}$(LNI) or a high l ight intensity of $120{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}$(HNI) u sing h igh-pressure sodium l amps during the 22:00-02:00 HR. The control plants were grown under 9 h short-day condition. NI for 16 weeks and cooling for 9 weeks were employed twice during the 2 years of the experimental period. The air temperature was approximately $2^{\circ}C$ lower in the mist than in the shade and the relative humidity was 80 ${\pm}5%$ in the mist compared to $55{\pm}5%$ in the shade. The daily light integral in the mist section was 48% higher than in the shade section. The time from initial planting to flowering pseudobulb emergence decreased with both LNI and HNI for both cultivars, regardless of the cooling treatments. Under NI conditions, however, between 60% and 1 00% of plants of both cultivars flowered in the mist, whereas no or 20% of 'Red Fire' or 'Yokihi' plants, respectively, flowered in the shade treatment over 2 years. Plants grown under the mist had bigger pseudobulbs than those grown in the shade under both NI treatments. These results show that commercial use of NI in winter and a mist cooling system in summer would decrease crop production time to 2 years and increase profits in Cymbidium forcing culture.
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Claims 5
Claim · model-written summary
Both low and high night interruption shortened time to flowering pseudobulb emergence in both cultivars across cooling treatments.
- Material
- ‘Red Fire’ and ‘Yokihi’t0
- Treatment
- LNI and HNIe0
- Outcome
- time from initial planting to flowering pseudobulb emergencee0
- Direction
- decreasede0
CymbidiumNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The time from initial planting to flowering pseudobulb emergence decreased with both LNI and HNI for both cultivars, regardless of the cooling treatments.”
t0“Cymbidium ‘Red Fire’ and ‘Yokihi’”
Claim · model-written summary
Under night interruption, 60% to 100% of both cultivars flowered with mist cooling, compared with none or 20% with shade.
- Treatment
- miste0
- Outcome
- plants of both cultivars flowerede0
- Direction
- flowerede0
- Value
- 60%e0
- Qualifier
- over 2 yearse0
- Comparator
- shade treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“between 60% and 1 00% of plants of both cultivars flowered in the mist, whereas no or 20% of 'Red Fire' or 'Yokihi' plants, respectively, flowered in the shade treatment over 2 years”
t0“Cymbidium ‘Red Fire’ and ‘Yokihi’”
Claim · model-written summary
Mist cooling produced bigger pseudobulbs than shade under both night interruption treatments.
- Treatment
- miste0
- Outcome
- pseudobulbse0
- Direction
- biggere0
- Qualifier
- under both NI treatmentse0
- Comparator
- shadee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants grown under the mist had bigger pseudobulbs than those grown in the shade under both NI treatments.”
t0“Cymbidium ‘Red Fire’ and ‘Yokihi’”
Claim · model-written summary
The authors conclude that winter night interruption with summer mist cooling would cut production time to two years.
- Treatment
- NI in winter and a mist cooling system in summere0
- Outcome
- crop production timee0
- Direction
- decreasee0
- Value
- 2 yearse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“commercial use of NI in winter and a mist cooling system in summer would decrease crop production time to 2 years”
t0“Cymbidium ‘Red Fire’ and ‘Yokihi’”
Claim · model-written summary
The authors conclude that winter night interruption with summer mist cooling would increase profits.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“commercial use of NI in winter and a mist cooling system in summer would decrease crop production time to 2 years and increase profits in Cymbidium forcing culture”
The same questions in other papers
light · growth · CymbidiumPositive and negative results
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See all 6 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.