Abstract
Abstract This study aims to analyze the effect of silicon (Si) application on soil microbial populations, particularly bacteria, nitrogen (N) and phosphorus (P) uptake under various growing media conditions, and its implications for corn (Zea mays L.) growth. The experiment used a completely randomized factorial design with two factors: Si concentration (0, 5, 10, and 15% SiO₂) and type of soil condition (standard soil, high-N soil, P-deficient soil, and high-organic-matter soil). The results showed that Si fertilizer application increased bacterial populations by 18.87% in the control medium, 134.6% in high-N soil, 134.7% in P-deficient soil, and 20% in high-organic matter soil, while the application of 15% Si in P-deficient soil increased P uptake by 53.7% compared to without Si, and in high-N soil, the application of 15% Si reduced tissue N content but increased its utilization efficiency. The increase in P uptake occurred through ionic competition between SiO₄⁴⁻ and PO₄³⁻ at the uptake site, while the decrease in tissue N content indicated Si's role in optimizing N utilization. Leaf Si content was relatively higher in all treated media compared to the control, followed by a tendency toward increased plant dry weight and stomatal number. These results indicate that Si application under nutrient stress conditions can balance N and P availability and improve physiological parameters supporting growth.
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Claims 12
Claim · model-written summary
Silicon fertilizer increased bacterial populations by 18.87% in the control medium.
- Treatment
- Si fertilizer applicatione0
- Outcome
- bacterial populationse0
- Direction
- increasede0
- Value
- 18.87%e0
- Setting
- control mediume0
Not reportedTaxonComparator
Verbatim
e0“Si fertilizer application increased bacterial populations by 18.87% in the control medium”
Claim · model-written summary
Silicon fertilizer increased bacterial populations by 134.6% in high-N soil.
- Treatment
- Si fertilizer applicatione0
- Outcome
- bacterial populationse0
- Direction
- increasede0
- Value
- 134.6%e0
- Setting
- high-N soile0
Not reportedTaxonComparator
Verbatim
e0“Si fertilizer application increased bacterial populations by 18.87% in the control medium, 134.6% in high-N soil”
Claim · model-written summary
Silicon fertilizer increased bacterial populations by 134.7% in P-deficient soil.
- Treatment
- Si fertilizer applicatione0
- Outcome
- bacterial populationse0
- Direction
- increasede0
- Value
- 134.7%e0
- Setting
- P-deficient soile0
Not reportedTaxonComparator
Verbatim
e0“Si fertilizer application increased bacterial populations by 18.87% in the control medium, 134.6% in high-N soil, 134.7% in P-deficient soil”
Claim · model-written summary
Silicon fertilizer increased bacterial populations by 20% in high-organic matter soil.
- Treatment
- Si fertilizer applicatione0
- Outcome
- bacterial populationse0
- Direction
- increasede0
- Value
- 20%e0
- Setting
- high-organic matter soile0
Not reportedTaxonComparator
Verbatim
e0“Si fertilizer application increased bacterial populations by 18.87% in the control medium, 134.6% in high-N soil, 134.7% in P-deficient soil, and 20% in high-organic matter soil”
Claim · model-written summary
At 15% Si, corn P uptake increased by 53.7% in P-deficient soil relative to no Si.
- Treatment
- 15% Sie0
- Outcome
- P uptakee0
- Direction
- increasede0
- Value
- 53.7%e0
- Comparator
- without Sie0
- Setting
- P-deficient soile0
Not reportedTaxon
Verbatim
e0“the application of 15% Si in P-deficient soil increased P uptake by 53.7% compared to without Si”
Claim · model-written summary
At 15% Si in high-N soil, tissue N content decreased.
Not reportedTaxonComparator
Verbatim
e0“in high-N soil, the application of 15% Si reduced tissue N content”
Claim · model-written summary
At 15% Si in high-N soil, N utilization efficiency increased.
Not reportedTaxonComparator
Verbatim
e0“in high-N soil, the application of 15% Si reduced tissue N content but increased its utilization efficiency”
Claim · model-written summary
The authors attribute increased P uptake to ionic competition between silicate and phosphate at the uptake site.
Not reportedTaxon
Verbatim
e0“The increase in P uptake occurred through ionic competition between SiO₄⁴⁻ and PO₄³⁻ at the uptake site”
Claim · model-written summary
Lower tissue N content indicated a role for Si in optimizing N utilization.
Not reportedTaxon
Verbatim
e0“the decrease in tissue N content indicated Si's role in optimizing N utilization”
Claim · model-written summary
Leaf Si content was higher in all treated media than the control.
Not reportedTaxon
Verbatim
e0“Leaf Si content was relatively higher in all treated media compared to the control”
Claim · model-written summary
Plant dry weight tended to increase after Si treatment.
Not reportedTaxonTreatmentComparator
Verbatim
e0“followed by a tendency toward increased plant dry weight and stomatal number”
Claim · model-written summary
Stomatal number tended to increase after Si treatment.
Not reportedTaxonTreatmentComparator
Verbatim
e0“followed by a tendency toward increased plant dry weight and stomatal number”