Abstract
To investigate the relationship between the recovery rate of applied silica of calcium silicate fertilizer (CS) by rice plant and application rates of nitrogen (N), a pot plant experiment was conducted under ditfer- ent CS and N application rates. Treatments were CS application as basal fertilizer (Si+)and no silica appli- cation (Si-) and the both treatments were grown with three nitrogen (N) application levels, i.e., low (Nl), middle (Nm), a nd high (Nh). Higher nitrogen application rates improved the plant dry weight significantly, re- gardless of Si-or Si+ treatment. In comparison with Nl values, the total dry weight in Si- and Si+ plants increased by 31 and 35% in Nh and 19 and 21% in Nm treatments. The ditference of silica content between Si+ plants and Si-plants was significant, but there was no significant ditference in silica content among ni- trogen treatments. The recovery rates of applied silica by rice plants in Nl, Nm, and Nh were 23.9, 32.4 and 30.6%, respectively, but there were no significant ditferences in recovery rates of silica among the ditferent nitrogen application rates Therefore, it seemed that the recovery rate of applied silica of CS was not atfected by nitrogen application rate and plant growth. Key words: calcium silicate, silica uptake, N application, recovery rate, rice
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Claims 12
Claim · model-written summary
Higher nitrogen application rates significantly improved rice plant dry weight regardless of silica treatment.
- Taxon
- rice plant
Oryza sativae1 - Treatment
- Higher nitrogen application ratese0
- Outcome
- plant dry weighte0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Higher nitrogen application rates improved the plant dry weight significantly, re- gardless of Si-or Si+ treatment”
e1“by rice plant and application rates of nitrogen (N)”
Claim · model-written summary
Under Si-, high nitrogen raised total dry weight 31% relative to low nitrogen.
- Taxon
- rice plantOryza sativae1
- Treatment
- Nhe0
- Outcome
- total dry weighte0
- Direction
- increasede0
- Value
- 31e0
- Qualifier
- Si-e0
- Comparator
- Nle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In comparison with Nl values, the total dry weight in Si- and Si+ plants increased by 31 and 35% in Nh and 19 and 21% in Nm treatments”
e1“by rice plant and application rates of nitrogen (N)”
Claim · model-written summary
Under Si+, high nitrogen raised total dry weight 35% relative to low nitrogen.
- Taxon
- rice plantOryza sativae1
- Treatment
- Nhe0
- Outcome
- total dry weighte0
- Direction
- increasede0
- Value
- 35%e0
- Qualifier
- Si+e0
- Comparator
- Nle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In comparison with Nl values, the total dry weight in Si- and Si+ plants increased by 31 and 35% in Nh and 19 and 21% in Nm treatments”
e1“by rice plant and application rates of nitrogen (N)”
Claim · model-written summary
Under Si-, medium nitrogen raised total dry weight 19% relative to low nitrogen.
- Taxon
- rice plantOryza sativae1
- Treatment
- Nme0
- Outcome
- total dry weighte0
- Direction
- increasede0
- Value
- 19e0
- Qualifier
- Si-e0
- Comparator
- Nle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In comparison with Nl values, the total dry weight in Si- and Si+ plants increased by 31 and 35% in Nh and 19 and 21% in Nm treatments”
e1“by rice plant and application rates of nitrogen (N)”
Claim · model-written summary
Under Si+, medium nitrogen raised total dry weight 21% relative to low nitrogen.
- Taxon
- rice plantOryza sativae1
- Treatment
- Nme0
- Outcome
- total dry weighte0
- Direction
- increasede0
- Value
- 21%e0
- Qualifier
- Si+e0
- Comparator
- Nle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In comparison with Nl values, the total dry weight in Si- and Si+ plants increased by 31 and 35% in Nh and 19 and 21% in Nm treatments”
e1“by rice plant and application rates of nitrogen (N)”
Claim · model-written summary
Silica content differed significantly between silica treated and untreated rice.
- Taxon
- rice plantOryza sativae1
- Treatment
- Si+e0
- Outcome
- silica contente0
- Comparator
- Si-plantse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The ditference of silica content between Si+ plants and Si-plants was significant”
e1“by rice plant and application rates of nitrogen (N)”
Claim · model-written summary
Silica content did not differ significantly among nitrogen treatments.
- Taxon
- rice plantOryza sativae1
- Treatment
- ni- trogen treatmentse0
- Outcome
- silica contente0
- Direction
- no significant ditferencee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there was no significant ditference in silica content among ni- trogen treatments”
e1“by rice plant and application rates of nitrogen (N)”
Claim · model-written summary
Recovery of applied silica was 23.9% at low nitrogen.
- Taxon
- rice plantsOryza sativae0
- Treatment
- Nle0
- Outcome
- recovery rates of applied silicae0
- Value
- 23.9e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“recovery rates of applied silica by rice plants in Nl, Nm, and Nh were 23.9, 32.4 and 30.6%, respectively”
Claim · model-written summary
Recovery of applied silica was 32.4% at medium nitrogen.
- Taxon
- rice plantsOryza sativae0
- Treatment
- Nme0
- Outcome
- recovery rates of applied silicae0
- Value
- 32.4e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“recovery rates of applied silica by rice plants in Nl, Nm, and Nh were 23.9, 32.4 and 30.6%, respectively”
Claim · model-written summary
Recovery of applied silica was 30.6% at high nitrogen.
- Taxon
- rice plantsOryza sativae0
- Treatment
- Nhe0
- Outcome
- recovery rates of applied silicae0
- Value
- 30.6%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“recovery rates of applied silica by rice plants in Nl, Nm, and Nh were 23.9, 32.4 and 30.6%, respectively”
Claim · model-written summary
Recovery rates of silica did not differ significantly among nitrogen application rates.
- Taxon
- rice plantOryza sativae1
- Treatment
- ditferent nitrogen application ratese0
- Outcome
- recovery rates of silicae0
- Direction
- no significant ditferencese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there were no significant ditferences in recovery rates of silica among the ditferent nitrogen application rates”
e1“by rice plant and application rates of nitrogen (N)”
Claim · model-written summary
The authors interpreted silica recovery as unaffected by nitrogen application rate and plant growth.
- Taxon
- rice plantOryza sativae1
- Treatment
- nitrogen application ratee0
- Outcome
- recovery rate of applied silica of CSe0
- Direction
- not atfectede0
- Qualifier
- plant growthe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it seemed that the recovery rate of applied silica of CS was not atfected by nitrogen application rate and plant growth”
e1“by rice plant and application rates of nitrogen (N)”
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See all 511 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.