Abstract
In order to know the dynamics of calcium absorption in sunflower seedlings, an experiment was established under laboratory conditions, at the Universidad Tecnologica de Tehuacan, to evaluate five levels of Ca(CO3)2 in the solution. The variables were: absorbed calcium, pH, electrical conductivity, root length and volume, which were evaluated under a completely randomized design and four replicates (5x4) = 20 experimental units. The results indicate that sunflower can absorb Ca++, in solutions up to 160 mg L-1 and support, pH levels of 10.5 and 6.5 dSm-1.The length as well as the root volume decreased as the calcium concentration increased. From this research it can be concluded, that sunflower can grow and absorb calcium, at concentrations of 160 mg L-1 Ca++ in the solution.
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Claims 3
Claim · model-written summary
Sunflower can absorb Ca++ in solutions up to 160 mg L-1 under laboratory conditions.
- Taxon
- sunflower
Helianthus annuuse1 - Outcome
- absorb Ca++e1
- Value
- 160 mg L-1e1
- Setting
- laboratory conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“an experiment was established under laboratory conditions”
e1“The results indicate that sunflower can absorb Ca++, in solutions up to 160 mg L-1 and support, pH levels of 10.5 and 6.5 dSm-1”
Claim · model-written summary
Sunflower supports pH levels of 10.5 and 6.5 dSm-1 in the calcium solutions.
- Taxon
- sunflowerHelianthus annuuse1
- Outcome
- pH levelse1
- Value
- 10.5 and 6.5 dSm-1e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The results indicate that sunflower can absorb Ca++, in solutions up to 160 mg L-1 and support, pH levels of 10.5 and 6.5 dSm-1”
Claim · model-written summary
Root length and root volume of sunflower decreased as calcium concentration increased.
- Taxon
- sunflowerHelianthus annuuse1
- Treatment
- calcium concentratione2
- Outcome
- length as well as the root volumee2
- Direction
- decreasede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The results indicate that sunflower can absorb Ca++, in solutions up to 160 mg L-1”
e2“The length as well as the root volume decreased as the calcium concentration increased”
The same questions in other papers
calcium atom · growth · Helianthus annuus (common sunflower)Positive and negative results
2 papers in the same direction as this paper · 4 in the opposite direction
- 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.