Abstract
An experiment was conducted to investigate the effects of calcium and nitrogen on quality and quantity of Rosa hybrida in hydroponic culture, using factorial complete randomized design with different levels of ammonium-N (0, 2.5, and 5 mM) and calcium (1.6 and 4.8 mM). The results indicated that ammonium-N concentration of 2 mM increased the number of flowers, length of pedicles, and fresh weight of flower stem per plant. 5 mM of ammonium-N caused a significant decrease in most of the measured characteristics. Increase in calcium concentration enhanced nitrogen, calcium, manganese, and boron; while, potassium, zinc, and copper decreased in the leaf. Flower diameter and fresh weight of flower stems per plant increased significantly. With application of ammonium in the nutrient solution, calcium and potassium concentration in the leaf decreased, whereas phosphorus, zinc, manganese, iron, and boron significantly increased. Therefore, application of 2.5 mM ammonium-N and 4.8 mM calcium are recommended.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 10
Claim · model-written summary
Ammonium-N at 2 mM increased flower number, pedicle length and flower stem fresh weight.
- Taxon
- Rosa hybrida
Rosa hybrid cultivare1 - Treatment
- ammonium-N concentration of 2 mMe0
- Outcome
- number of flowers, length of pedicles, and fresh weight of flower stem per plante0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ammonium-N concentration of 2 mM increased the number of flowers, length of pedicles, and fresh weight of flower stem per plant”
e1“Rosa hybrida”
Claim · model-written summary
Ammonium-N at 5 mM significantly decreased most measured characteristics.
- Taxon
- Rosa hybridaRosa hybrid cultivare1
- Treatment
- 5 mM of ammonium-Ne0
- Outcome
- most of the measured characteristicse0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“5 mM of ammonium-N caused a significant decrease in most of the measured characteristics”
e1“Rosa hybrida”
Claim · model-written summary
More calcium increased leaf nitrogen, calcium and manganese.
- Taxon
- Rosa hybridaRosa hybrid cultivare1
- Organ / stage
- leafe2
- Treatment
- Increase in calcium concentratione0
- Outcome
- nitrogen, calcium, manganesee0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increase in calcium concentration enhanced nitrogen, calcium, manganese, and boron”
e1“Rosa hybrida”
e2“potassium, zinc, and copper decreased in the leaf”
Claim · model-written summary
More calcium increased leaf boron.
- Taxon
- Rosa hybridaRosa hybrid cultivare1
- Organ / stage
- leafe2
- Treatment
- Increase in calcium concentratione0
- Outcome
- borone0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increase in calcium concentration enhanced nitrogen, calcium, manganese, and boron”
e1“Rosa hybrida”
e2“potassium, zinc, and copper decreased in the leaf”
Claim · model-written summary
More calcium decreased leaf potassium, zinc and copper.
- Taxon
- Rosa hybridaRosa hybrid cultivare1
- Organ / stage
- leafe0
- Treatment
- calcium concentratione2
- Outcome
- potassium, zinc, and coppere0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“potassium, zinc, and copper decreased in the leaf”
e1“Rosa hybrida”
e2“calcium concentration”
Claim · model-written summary
More calcium significantly increased flower diameter and stem fresh weight.
- Taxon
- Rosa hybridaRosa hybrid cultivare1
- Treatment
- calcium concentratione2
- Outcome
- Flower diameter and fresh weight of flower stems per plante0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Flower diameter and fresh weight of flower stems per plant increased significantly”
e1“Rosa hybrida”
e2“calcium concentration”
Claim · model-written summary
Ammonium decreased leaf calcium and potassium.
- Taxon
- Rosa hybridaRosa hybrid cultivare1
- Treatment
- application of ammonium in the nutrient solutione0
- Outcome
- calcium and potassium concentration in the leafe0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With application of ammonium in the nutrient solution, calcium and potassium concentration in the leaf decreased”
e1“Rosa hybrida”
Claim · model-written summary
Ammonium significantly increased leaf phosphorus, zinc and manganese.
- Taxon
- Rosa hybridaRosa hybrid cultivare1
- Treatment
- application of ammoniume2
- Outcome
- phosphorus, zinc, manganesee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“phosphorus, zinc, manganese, iron, and boron significantly increased”
e1“Rosa hybrida”
e2“application of ammonium in the nutrient solution”
Claim · model-written summary
Ammonium significantly increased leaf iron and boron.
- Taxon
- Rosa hybridaRosa hybrid cultivare1
- Treatment
- application of ammoniume2
- Outcome
- iron, and borone0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“phosphorus, zinc, manganese, iron, and boron significantly increased”
e1“Rosa hybrida”
e2“application of ammonium in the nutrient solution”
Claim · model-written summary
The authors recommend 2.5 mM ammonium-N and 4.8 mM calcium.
- Taxon
- Rosa hybridaRosa hybrid cultivare1
- Outcome
- application of 2.5 mM ammonium-N and 4.8 mM calciume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of 2.5 mM ammonium-N and 4.8 mM calcium are recommended”
e1“Rosa hybrida”
The same questions in other papers
nitrogen · yield · Rosa hybrid cultivarPositive and negative results
1 paper in the same direction as this paper · 2 in the opposite direction
- no effect
- no effect
- 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.