Abstract
The objective of this study was to determine the effects of light intensity and electrical conductivity (EC) of nutrient solution on the growth and nutrient uptake of potted kalanchoe plants (Kalanchoe blossfeldiana 'Marlene') with growth stage in ebb and flow subirrigation systems. The plants were grown at four ECs of 0.5, 1.0, 1.5, and 2.0 for seedling stage and four ECs of 1.0, 1.5, 2.0, and 3.0 for short day stage under three daily photosynthetic photon flux (PPF) of 6.5, 10.3, 18.2 . At seedling stage, plant height was the longest under the lowest light intensity, and particularly dry weights and leaf areas were the highest at PPF 10.3 . Dry weights and leaf areas were the highest at EC 1.5 regardless of light intensity. At short day exposure, plant height was the longest under the lowest light intensity. Dry weights, leaf areas, and number of pedicels of the plants significantly increased as light intensity increased. Under all light intensity conditions, dry weights, leaf areas, and number of pedicles increased until EC becomes to 1.0 - 2.0 . And after reached the highest at EC 2.0 , they decreased at EC 3.0 . By comparing the ion uptakes at EC 1.5 of seedling stage and EC 2.0 of short day stage in which the plants grew better, we confirmed that ion balance of nutrient solution among -N, , , , and were significantly changed at short day stage compared to seedling stage. For better growth of the plants, both ion balance and EC of nutrient solution should be considered under different light intensities at short day stage while control of EC is enough at seedling stage.
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Claims 8
Claim · model-written summary
At seedling stage, plant height was longest at the lowest light intensity.
- Taxon
- Kalanchoe blossfeldiana
_Kalanchoe_blossfeldiana_-_inflorescence.jpg?width=60)
Kalanchoe blossfeldianat0 - Organ / stage
- seedling stagee0
- Treatment
- lowest light intensitye0
- Outcome
- plant heighte0
- Direction
- longeste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Kalanchoe_blossfeldiana_-_inflorescence.jpg?width=500)
Verbatim
e0“At seedling stage, plant height was the longest under the lowest light intensity”
t0“Kalanchoe blossfeldiana”
Claim · model-written summary
At seedling stage, dry weight and leaf area peaked at PPF 10.3.
- Taxon
- Kalanchoe blossfeldianaKalanchoe blossfeldianat0
- Treatment
- PPF 10.3e0
- Outcome
- dry weights and leaf arease0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“dry weights and leaf areas were the highest at PPF 10.3”
t0“Kalanchoe blossfeldiana”
Claim · model-written summary
Dry weight and leaf area peaked at EC 1.5 across light intensities.
- Taxon
- Kalanchoe blossfeldianaKalanchoe blossfeldianat0
- Treatment
- EC 1.5e0
- Outcome
- Dry weights and leaf arease0
- Direction
- higheste0
- Qualifier
- regardless of light intensitye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dry weights and leaf areas were the highest at EC 1.5 regardless of light intensity”
t0“Kalanchoe blossfeldiana”
Claim · model-written summary
At short day exposure, height was longest at the lowest light intensity.
- Taxon
- Kalanchoe blossfeldianaKalanchoe blossfeldianat0
- Organ / stage
- short day exposuree0
- Treatment
- lowest light intensitye0
- Outcome
- plant heighte0
- Direction
- longeste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At short day exposure, plant height was the longest under the lowest light intensity”
t0“Kalanchoe blossfeldiana”
Claim · model-written summary
At short day exposure, dry weight, leaf area and pedicel number rose with light intensity.
- Taxon
- Kalanchoe blossfeldianaKalanchoe blossfeldianat0
- Treatment
- light intensitye0
- Outcome
- Dry weights, leaf areas, and number of pedicelse0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dry weights, leaf areas, and number of pedicels of the plants significantly increased as light intensity increased”
t0“Kalanchoe blossfeldiana”
Claim · model-written summary
Dry weight, leaf area and pedicel number rose through EC 1.0–2.0.
- Taxon
- Kalanchoe blossfeldianaKalanchoe blossfeldianat0
- Treatment
- ECe0
- Outcome
- dry weights, leaf areas, and number of pediclese0
- Direction
- increasede0
- Value
- 1.0 - 2.0e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“dry weights, leaf areas, and number of pedicles increased until EC becomes to 1.0 - 2.0”
t0“Kalanchoe blossfeldiana”
Claim · model-written summary
Those growth traits fell at EC 3.0 after peaking at EC 2.0.
- Taxon
- Kalanchoe blossfeldianaKalanchoe blossfeldianat0
- Treatment
- EC 3.0e0
- Outcome
- theye0
- Direction
- decreasede0
- Comparator
- EC 2.0e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“after reached the highest at EC 2.0 , they decreased at EC 3.0”
t0“Kalanchoe blossfeldiana”
Claim · model-written summary
Nutrient solution ion balance changed significantly at short day stage versus seedling stage.
- Taxon
- Kalanchoe blossfeldianaKalanchoe blossfeldianat0
- Organ / stage
- short day stagee0
- Outcome
- ion balance of nutrient solutione0
- Comparator
- seedling stagee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ion balance of nutrient solution among -N, , , , and were significantly changed at short day stage compared to seedling stage”
t0“Kalanchoe blossfeldiana”
The same questions in other papers
light · growth · Kalanchoe blossfeldianaResults agree
2 papers in the same direction as this paper
- positive
- positive
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.