Abstract
Plant growth regulators and biostimulants have been used as an agronomic technique to optimize the production of seedlings in various crops. This study aimed to evaluate the influence of gibberellic acid and the biostimulant Stimulate® on the initial growth of tamarind (Tamarindus indica L.). The experiments were conducted in a nursery with 50% shading, in a randomized block design with five replications and five plants per plot. Thirty eight days after sowing, the leaves were sprayed seven times a day with 0.0 (control), 0.8, 1.6, 2.4 and 3.2 mL of gibberellic acid L-1 aqueous solution and with 0.0 (control), 6.0,12.0, 18.0, and 24.0 mL Stimulate® L-1 aqueous solution. Stem diameter (SD), plant height (PH), longest root length (LRL), shoot dry mass (SDM), root dry mass (RDM) and RDM:SDM ratio were evaluated ninety days after sowing. Variance and regression analysis showed that GA3 at 4% promoted plant growth (height), but had no significant effect on stem diameter, longest root length, shoot and root dry mass and the RDM:SDM ratio. On the other hand, all concentrations of Stimulate® significantly increased plant height and shoot and root dry mass of tamarind seedlings.
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Claims 3
Claim · model-written summary
GA3 at 4% promoted tamarind seedling height.
- Taxon
- tamarind
_%E0%A4%87%E0%A4%AE%E0%A4%B2%E0%A5%80_Tree.jpg?width=60)
Tamarindus indicat0 - Treatment
- GA3 at 4%e0
- Outcome
- plant growth (height)e0
- Direction
- promotede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_%E0%A4%87%E0%A4%AE%E0%A4%B2%E0%A5%80_Tree.jpg?width=500)
Verbatim
e0“GA3 at 4% promoted plant growth (height)”
t0“tamarind”
Claim · model-written summary
GA3 had no significant effect on stem diameter, root length, dry masses or root-to-shoot mass ratio.
- Treatment
- GA3 at 4%e1
- Outcome
- stem diameter, longest root length, shoot and root dry masse0
- Direction
- no significant effecte0
Not reportedTaxonComparator
Verbatim
e0“but had no significant effect on stem diameter, longest root length, shoot and root dry mass and the RDM:SDM ratio.”
e1“GA3 at 4% promoted plant growth (height)”
Claim · model-written summary
All Stimulate concentrations significantly increased tamarind seedling height and shoot and root dry mass.
- Taxon
- tamarindTamarindus indicae0
- Treatment
- all concentrations of Stimulate®e0
- Outcome
- plant height and shoot and root dry masse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“all concentrations of Stimulate® significantly increased plant height and shoot and root dry mass of tamarind seedlings.”
The same questions in other papers
Gibberellic acid · growth · Tamarindus indica (tamarind)Results agree
8 papers in the same direction as this paper
- positive
- positive
- positive
5 papers more in this group
See all 9 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.