Abstract
BACKGROUND: Optimizing the growth and flowering of ornamental Roses is critical for improving horticultural productivity. This study investigated the synergistic effects of light intensity and two biostimulants, seaweed extract (SWE) and active dry yeast (ADY), on the growth, flower quality, chlorophyll, and essential nutrients content of rose plants. A factorial experiment tested three light regimes (full sun, 65% and 75% shading) combined with two concentrations of SWE (1000 and 2000 mg·L⁻¹) and two concentrations of ADY (3000 and 4000 mg·L⁻¹). RESULTS: Cultivation under shading (65% and 75%) consistently reduced vegetative growth and key nutrients elements, including the chlorophyll content (SPAD) and leaf concentrations of N, P, Zn, and Cu. The full-sun and 65% light conditions yielded the highest chlorophyll content, which were significantly greater than those of the 75% shade treatment. Nutrient analysis revealed that full sun maximized N, P, Zn, and Cu, whereas K was highest under 75% shade. Conversely, plants grown under full sun, when supplemented with biostimulants, presented significant and synergistic increases in growth, flower quality, and nutrient accumulation. The most effective treatment was the combination of full sun and 4000 mg·L⁻¹. This combination significantly optimized key horticultural traits and resulted in the highest N, Zn, and Cu levels. CONCLUSION: Overall, the findings indicate that the positive effects of biostimulants on roses depend strongly on light availability, supporting a sustainable strategy that integrates light management and biostimulants application to enhance commercial rose production.
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Claims 8
Claim · model-written summary
Shading reduced rose vegetative growth.
- Taxon
- Rosa hybrida L. (Roses)
Rosa hybrid cultivart0 - Treatment
- shading (65% and 75%)e0
- Outcome
- vegetative growthe0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cultivation under shading (65% and 75%) consistently reduced vegetative growth”
t0“Rosa hybrida L. (Roses)”
Claim · model-written summary
Shading reduced rose chlorophyll and leaf N, P, Zn, and Cu.
- Taxon
- Rosa hybrida L. (Roses)Rosa hybrid cultivart0
- Treatment
- shading (65% and 75%)e0
- Outcome
- chlorophyll content (SPAD) and leaf concentrations of N, P, Zn, and Cue0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cultivation under shading (65% and 75%) consistently reduced vegetative growth and key nutrients elements, including the chlorophyll content (SPAD) and leaf concentrations of N, P, Zn, and Cu”
t0“Rosa hybrida L. (Roses)”
Claim · model-written summary
Full sun and 65% light gave more chlorophyll than 75% shade.
- Taxon
- Rosa hybrida L. (Roses)Rosa hybrid cultivart0
- Treatment
- full-sun and 65% light conditionse0
- Outcome
- chlorophyll contente0
- Direction
- greatere0
- Comparator
- 75% shade treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The full-sun and 65% light conditions yielded the highest chlorophyll content, which were significantly greater than those of the 75% shade treatment”
t0“Rosa hybrida L. (Roses)”
Claim · model-written summary
Full sun maximized leaf N, P, Zn, and Cu.
- Taxon
- Rosa hybrida L. (Roses)Rosa hybrid cultivart0
- Treatment
- full sune0
- Outcome
- N, P, Zn, and Cue0
- Direction
- maximizede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“full sun maximized N, P, Zn, and Cu”
t0“Rosa hybrida L. (Roses)”
Claim · model-written summary
Leaf K was highest at 75% shade.
- Taxon
- Rosa hybrida L. (Roses)Rosa hybrid cultivart0
- Treatment
- 75% shadee0
- Outcome
- Ke0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“K was highest under 75% shade”
t0“Rosa hybrida L. (Roses)”
Claim · model-written summary
Biostimulants under full sun synergistically increased rose growth, flower quality and nutrient accumulation.
- Taxon
- Rosa hybrida L. (Roses)Rosa hybrid cultivart0
- Treatment
- supplemented with biostimulantse0
- Outcome
- growth, flower quality, and nutrient accumulatione0
- Direction
- increasese0
- Qualifier
- full sune0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plants grown under full sun, when supplemented with biostimulants, presented significant and synergistic increases in growth, flower quality, and nutrient accumulation”
e1“rose plants”
t0“Rosa hybrida L. (Roses)”
Claim · model-written summary
Full sun plus 4000 mg·L⁻¹ yielded the highest N, Zn, and Cu levels.
- Taxon
- Rosa hybrida L. (Roses)Rosa hybrid cultivart0
- Treatment
- combination of full sun and 4000 mg·L⁻¹e0
- Outcome
- N, Zn, and Cu levelse0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The most effective treatment was the combination of full sun and 4000 mg·L⁻¹. This combination significantly optimized key horticultural traits and resulted in the highest N, Zn, and Cu levels”
t0“Rosa hybrida L. (Roses)”
Claim · model-written summary
The authors recommend integrating light and biostimulant management for commercial roses.
- Taxon
- Rosa hybrida L. (Roses)Rosa hybrid cultivart0
- Outcome
- integrates light management and biostimulants applicatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“supporting a sustainable strategy that integrates light management and biostimulants application to enhance commercial rose production”
t0“Rosa hybrida L. (Roses)”
The same questions in other papers
shade · growth · Rosa hybrid cultivarPositive and negative results
1 in the opposite direction
- positive
light · physiology: pigments · Rosa hybrid cultivarPositive and negative results
1 paper in the same direction as this paper · 3 in the opposite direction
- negative
- negative
- negative
1 paper more in this group
See all 5 papers →light · nutrient: content · Rosa hybrid cultivarResults agree
1 paper in the same direction as this paper
- positive
other · quality: general · Rosa hybrid cultivarResults agree
1 paper in the same direction as this paper
- 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.