Abstract
Several studies on solution culture suggest that silicon may be essential or beneficial to the growth of cucumber (Cucumis sativus L.). However, the majority of these have not considered the influence of silicon and the accompanying ion on the osmotic potential (psi(s)) of the nutrient solution, nor have they considered the change of mutual ratios of cations and anions generated by the amount of acid employed to neutralize the alkaline effect of the silicic salt. In the present work we studied the effects of 0, 0.75, and 1.5 mol SiO3(2-) m(-3), as well as the effect of -0.036, -0.072, and -0.108 MPa of osmotic potential of the nutrient solution on the growth of cucumber plants. This was achieved by modifying Steiner's universal solution, so as to include SiO3(2-) and Na(+), adjusting pH solutions with a mixture of acids (HNO3:H3PO4:H2SO4) and making the necessary corrections so that the theoretical psi(s) remained unaltered. The effect of silicon on the growth variables was not significant. However, the contribution of 0.75 mol SiO3(2-) m(-3) was beneficial to plant growth. In contrast, the application of 1.50 mol SiO3(2-) m(-3) decreased all the values of the growth variables, compared with 0.75 mol SiO3(2-) m(-3). The psi(s) of the nutrient solution showed significant statistical differences for some variables. The smallest values of some variables were obtained with the nutrient solution of psi(s) -0.036 MPa and the highest with -0.072 MPa. The solution of -0.108 MPa psi(s), compared with -0.072 MPa, caused a decrease in the values of most variables. The application of 0.75 and 1.5 mol SiO3(2-) m(-3) to the solution resulted in significant concentrations of silicon in leaves.
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Claims 9
Claim · model-written summary
The overall silicon effect on cucumber growth variables was not significant.
- Taxon
- cucumber
Cucumis sativuse0 - Treatment
- silicone1
- Outcome
- growth variablese1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cucumber (Cucumis sativus L.)”
e1“The effect of silicon on the growth variables was not significant.”
Claim · model-written summary
0.75 mol SiO3(2-) m(-3) benefited cucumber growth.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- 0.75 mol SiO3(2-) m(-3)e1
- Outcome
- plant growthe1
- Direction
- beneficiale1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cucumber (Cucumis sativus L.)”
e1“the contribution of 0.75 mol SiO3(2-) m(-3) was beneficial to plant growth.”
Claim · model-written summary
1.50 mol SiO3(2-) m(-3) decreased all cucumber growth variables versus 0.75 mol.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- 1.50 mol SiO3(2-) m(-3)e1
- Outcome
- growth variablese1
- Direction
- decreasede1
- Comparator
- 0.75 mol SiO3(2-) m(-3)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cucumber (Cucumis sativus L.)”
e1“the application of 1.50 mol SiO3(2-) m(-3) decreased all the values of the growth variables, compared with 0.75 mol SiO3(2-) m(-3).”
Claim · model-written summary
Nutrient solution osmotic potential significantly affected some cucumber variables.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- psi(s) of the nutrient solutione1
- Outcome
- some variablese1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cucumber (Cucumis sativus L.)”
e1“The psi(s) of the nutrient solution showed significant statistical differences for some variables.”
Claim · model-written summary
At -0.036 MPa, some cucumber variables were smallest.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- psi(s) -0.036 MPae1
- Outcome
- some variablese1
- Direction
- smalleste1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cucumber (Cucumis sativus L.)”
e1“The smallest values of some variables were obtained with the nutrient solution of psi(s) -0.036 MPa”
Claim · model-written summary
At -0.072 MPa, some cucumber variables were highest.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- -0.072 MPae1
- Outcome
- higheste1
- Direction
- higheste1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cucumber (Cucumis sativus L.)”
e1“the highest with -0.072 MPa”
Claim · model-written summary
-0.108 MPa reduced most cucumber variables relative to -0.072 MPa.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- -0.108 MPa psi(s)e1
- Outcome
- most variablese1
- Direction
- decreasee1
- Comparator
- -0.072 MPae1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cucumber (Cucumis sativus L.)”
e1“The solution of -0.108 MPa psi(s), compared with -0.072 MPa, caused a decrease in the values of most variables.”
Claim · model-written summary
Applying 0.75 mol SiO3(2-) m(-3) produced significant leaf silicon concentrations.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- 0.75e1
- Outcome
- concentrations of silicon in leavese1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cucumber (Cucumis sativus L.)”
e1“The application of 0.75 and 1.5 mol SiO3(2-) m(-3) to the solution resulted in significant concentrations of silicon in leaves.”
Claim · model-written summary
Applying 1.5 mol SiO3(2-) m(-3) produced significant leaf silicon concentrations.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- 1.5 mol SiO3(2-) m(-3)e1
- Outcome
- concentrations of silicon in leavese1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cucumber (Cucumis sativus L.)”
e1“The application of 0.75 and 1.5 mol SiO3(2-) m(-3) to the solution resulted in significant concentrations of silicon in leaves.”
The same questions in other papers
silicon atom · growth · Cucumis sativus (cucumber)Results differ
1 paper in the same direction as this paper · 25 in the opposite direction
- positive
- positive
- positive
23 papers more in this group
See all 27 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.