Abstract
In order to investigate the effect of form of nitrogen (N) [ammonium (NH4) and nitrate (NO3)] and calcium (Ca) levels of nutrition solution on quantitative and qualitative yield of cut rose flower (Rosa hybrida L.), cv. Vendentta, in soilless culture condition, an experiment was conducted in greenhouse of the National Ornamental Plants Research Station of Mahallat. The experiment was factorial, with completely randomized blocks design, and two factors including NH4 at three levels (0, 2.5 and 5.0 mM from 10 mM total N and the rest as NO3), and Ca at two levels (1.6 and 4.8 mM). Results showed that increasing NH4 concentration of nutrition solution from 0 to 2.5 mM, increased the number of cut flowers, peduncle length and fresh stem weight; whereas, 5 mM NH4 concentration decreased significantly the number of cut flowers, flower diameter, peduncle length, vaselife and fresh weight of stem. Increasing Ca concentration of nutrition solution enhanced significantly flower diameter and fresh weight of cut flowers. With application of NH4 in nutrition solution (increasing NH4 to NO3 ratio), Ca and K concentration of leaves was reduced, and P, Zn, Mn, Fe and B concentration was enhanced significantly. Increasing Ca concentration in nutrition solution enhanced N, Ca, Mn and B and reduced K, Zn and Cu in rose leaves significantly. According to the results of this experiment, application of 2.5 mM NH4 (25% total N of nutrition solution) along with 4.8 mM Ca, improved growth and some qualitative indices of rose flower (cv. Vendentta).
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Claims 8
Claim · model-written summary
Increasing NH4 from 0 to 2.5 mM increased cut flower number, peduncle length and stem fresh weight.
- Taxon
- Rosa hybrida L.
Rosa hybrid cultivart0 - Treatment
- NH4 concentration of nutrition solution from 0 to 2.5 mMe0
- Outcome
- number of cut flowers, peduncle length and fresh stem weighte0
- Direction
- increasede0
- Comparator
- 0e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increasing NH4 concentration of nutrition solution from 0 to 2.5 mM, increased the number of cut flowers, peduncle length and fresh stem weight”
t0“Effects of different amounts of ammonium and calcium in nutrition solution on nutritional status, yield and quality of rose (Rosa hybrida L.) in hydroponics.”
Claim · model-written summary
At 5 mM NH4, cut flower number, diameter, peduncle length, vase life and stem weight decreased significantly.
- Taxon
- Rosa hybrida L.Rosa hybrid cultivart0
- Treatment
- 5 mM NH4 concentratione0
- Outcome
- number of cut flowers, flower diameter, peduncle length, vaselife and fresh weight of steme0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“5 mM NH4 concentration decreased significantly the number of cut flowers, flower diameter, peduncle length, vaselife and fresh weight of stem.”
t0“Effects of different amounts of ammonium and calcium in nutrition solution on nutritional status, yield and quality of rose (Rosa hybrida L.) in hydroponics.”
Claim · model-written summary
Increasing calcium enhanced flower diameter and cut flower fresh weight.
- Taxon
- Rosa hybrida L.Rosa hybrid cultivart0
- Treatment
- Increasing Ca concentration of nutrition solutione0
- Outcome
- flower diameter and fresh weight of cut flowerse0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing Ca concentration of nutrition solution enhanced significantly flower diameter and fresh weight of cut flowers.”
t0“Effects of different amounts of ammonium and calcium in nutrition solution on nutritional status, yield and quality of rose (Rosa hybrida L.) in hydroponics.”
Claim · model-written summary
Increasing ammonium to nitrate ratio reduced leaf calcium and potassium.
- Taxon
- Rosa hybrida L.Rosa hybrid cultivart0
- Treatment
- application of NH4 in nutrition solutione0
- Outcome
- Ca and K concentration of leavese0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With application of NH4 in nutrition solution (increasing NH4 to NO3 ratio), Ca and K concentration of leaves was reduced”
t0“Effects of different amounts of ammonium and calcium in nutrition solution on nutritional status, yield and quality of rose (Rosa hybrida L.) in hydroponics.”
Claim · model-written summary
Increasing ammonium to nitrate ratio enhanced leaf P, Zn, Mn, Fe and B.
- Taxon
- Rosa hybrida L.Rosa hybrid cultivart0
- Treatment
- application of NH4 in nutrition solutione0
- Outcome
- P, Zn, Mn, Fe and B concentratione0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With application of NH4 in nutrition solution (increasing NH4 to NO3 ratio), Ca and K concentration of leaves was reduced, and P, Zn, Mn, Fe and B concentration was enhanced significantly.”
t0“Effects of different amounts of ammonium and calcium in nutrition solution on nutritional status, yield and quality of rose (Rosa hybrida L.) in hydroponics.”
Claim · model-written summary
Increasing calcium enhanced leaf N, Ca, Mn and B.
- Taxon
- rosee0
- Treatment
- Increasing Ca concentration in nutrition solutione0
- Outcome
- N, Ca, Mn and Be0
- Direction
- enhancede0
Not reportedComparator
Verbatim
e0“Increasing Ca concentration in nutrition solution enhanced N, Ca, Mn and B and reduced K, Zn and Cu in rose leaves significantly.”
Claim · model-written summary
Increasing calcium reduced leaf K, Zn and Cu.
- Taxon
- rosee0
- Treatment
- Increasing Ca concentration in nutrition solutione0
- Outcome
- K, Zn and Cue0
- Direction
- reducede0
Not reportedComparator
Verbatim
e0“Increasing Ca concentration in nutrition solution enhanced N, Ca, Mn and B and reduced K, Zn and Cu in rose leaves significantly.”
Claim · model-written summary
The authors concluded that 2.5 mM NH4 with 4.8 mM Ca improved rose growth and quality.
- Taxon
- rosee0
- Material
- Vendenttae0
- Treatment
- 2.5 mM NH4 (25% total N of nutrition solution) along with 4.8 mM Cae0
- Outcome
- growth and some qualitative indicese0
- Direction
- improvede0
Not reportedComparator
Verbatim
e0“application of 2.5 mM NH4 (25% total N of nutrition solution) along with 4.8 mM Ca, improved growth and some qualitative indices of rose flower (cv. Vendentta).”
The same questions in other papers
calcium atom · nutrient: content · RosaPositive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
calcium atom · growth · RosaResults agree
6 papers in the same direction as this paper
- positive
- positive
- positive
3 papers more in this group
See all 7 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.