Abstract
Abstract: Application of diatomaceous earth (DE) could improve the quality of soil, but its application in agriculture as a Si fertilizer requires additional research. Pot experiments were conducted with graded levels (0, 150, 300, 600 kg ha-1) of DE with recommended dose of N, P, K, in three types of soil (acidic, neutral and alkaline) from Southern India under two moisture conditions (field capacity and submergence) using rice as a test crop. The chosen DE consisted of biogenic silica, smectite, kaolinite and quartz. The grain yield was lower in plants grown in FC than in SUB moisture conditions regardless of the soil type and the DE added. Higher grain yield was observed with different DE applications under the SUB moisture condition in the three soils. The Si uptake increased for acidic and alkaline soils but not for neutral soil under the SUB moisture condition, whereas under the FC condition, the Si uptake was increased over the control only in alkaline soil. Increased nutrient and Si uptake was explained by the combination of physical and chemical properties of DE and was not only due to the contribution of amorphous silica. DE might be useful for improving the crop yield, but the soil composition and water regimes play a key role that influences the availability of nutrients in soils.
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Claims 7
Claim · model-written summary
Rice grain yield was lower at field capacity than under submergence across soils and DE treatments.
- Taxon
- rice
Oryza sativat0 - Treatment
- FCe0
- Outcome
- grain yielde0
- Direction
- lowere0
- Qualifier
- regardless of the soil type and the DE addede0
- Comparator
- SUB moisture conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The grain yield was lower in plants grown in FC than in SUB moisture conditions regardless of the soil type and the DE added.”
t0“rice”
Claim · model-written summary
DE applications increased grain yield under submergence in all three soils.
- Taxon
- riceOryza sativat0
- Treatment
- different DE applicationse0
- Outcome
- grain yielde0
- Direction
- Highere0
- Qualifier
- under the SUB moisture condition in the three soilse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Higher grain yield was observed with different DE applications under the SUB moisture condition in the three soils.”
t0“rice”
Claim · model-written summary
Under submergence, DE increased silicon uptake in acidic and alkaline soils.
- Taxon
- riceOryza sativat0
- Treatment
- DEe1
- Outcome
- Si uptakee0
- Direction
- increasede0
- Qualifier
- acidic and alkaline soilse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The Si uptake increased for acidic and alkaline soils but not for neutral soil under the SUB moisture condition”
e1“diatomaceous earth (DE)”
t0“rice”
Claim · model-written summary
Under submergence, silicon uptake did not increase in neutral soil.
- Taxon
- riceOryza sativat0
- Treatment
- DEe1
- Outcome
- Si uptakee0
- Direction
- note0
- Qualifier
- neutral soil under the SUB moisture conditione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The Si uptake increased for acidic and alkaline soils but not for neutral soil under the SUB moisture condition”
e1“diatomaceous earth (DE)”
t0“rice”
Claim · model-written summary
At field capacity, silicon uptake rose over control only in alkaline soil.
- Taxon
- riceOryza sativat0
- Treatment
- DEe1
- Outcome
- Si uptakee0
- Direction
- increasede0
- Qualifier
- only in alkaline soile0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under the FC condition, the Si uptake was increased over the control only in alkaline soil”
e1“diatomaceous earth (DE)”
t0“rice”
Claim · model-written summary
The authors attributed increased nutrient and silicon uptake to combined physical and chemical properties of DE.
- Taxon
- riceOryza sativat0
- Outcome
- nutrient and Si uptakee0
- Qualifier
- combination of physical and chemical properties of DEe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increased nutrient and Si uptake was explained by the combination of physical and chemical properties of DE and was not only due to the contribution of amorphous silica.”
t0“rice”
Claim · model-written summary
DE may improve crop yield, conditional on soil composition and water regime.
- Taxon
- riceOryza sativat0
- Outcome
- improving the crop yielde0
- Qualifier
- soil composition and water regimese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“DE might be useful for improving the crop yield, but the soil composition and water regimes play a key role that influences the availability of nutrients in soils.”
t0“rice”
The same questions in other papers
diatomaceous earth · nutrient: content · Oryza sativa (rice)Positive and negative results
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- negative
- positive
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See all 5 papers →diatomaceous earth · yield · Oryza sativa (rice)Results agree
7 papers in the same direction as this paper
- positive
- positive
- positive
4 papers more in this group
See all 8 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.