Abstract
Silicon (Si) fertilization can produce beneficial effect on the Siaccumulator—wheat (Triticum aestivum L.) grown on low available Si soils. For assessing Si availability in calcareous soils, four extractants were used to select a suitable method and a critical value for Si by correlating the extractable soil Si to the plant Si content and yield response to applied Si fertilizer of winter wheat grown on 17 field experiment plots. The quantities of Si extracted by the tests was, in descending order: 0.025 M citric acid >> buffering NaOAc-HOAc (pH 4) >> 0.19 M Na2CO3 0.5 M NaHCO3 (pH 8.5). Both the soil clay and CaCO3 contents significantly affected the extractable Si amount. All the extractable soil Si by any one of the four extractants was very significantly correlated with the Si contents in both the flag leaf and straw or with the total amount of Si uptake by wheat. The calibration test of relative wheat biomass yield response to Si fertilization showed that the NaOAc-HOAc extraction method was found to be the best for assessing Si availability for winter wheat in the calcareous soils. The critical value of available Si extracted by the classical method (NaOAc-HOAc) widely adopted for the acid and neutral soils was about 80 mg Si kg−1 (171 mg SiO2 kg−1) in the calcareous soil.
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Claims 5
Claim · model-written summary
The NaOAc-HOAc extraction method was the best of the four extractants for assessing Si availability for winter wheat in calcareous soils, judged by yield response in a calibration test.
- Taxon
- wheat
Triticum aestivume4 - Outcome
- assessing Si availabilitye4
- Comparator
- four extractantse3
- Setting
- calcareous soilse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“The calibration test of relative wheat biomass yield response to Si fertilization showed that the NaOAc-HOAc extraction method was found to be the best for assessing Si availability for winter wheat in the calcareous soils”
e3“All the extractable soil Si by any one of the four extractants was very significantly correlated with the Si contents in both the flag leaf and straw or with the total amount of Si uptake by wheat”
Claim · model-written summary
Extractable soil Si from all four extractants was very significantly correlated with Si contents in the flag leaf and straw or with total Si uptake by wheat.
- Taxon
- wheatTriticum aestivume3
- Organ / stage
- flag leaf and strawe3
- Outcome
- Si contents in both the flag leaf and strawe3
- Qualifier
- very significantly correlatede3
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“All the extractable soil Si by any one of the four extractants was very significantly correlated with the Si contents in both the flag leaf and straw or with the total amount of Si uptake by wheat”
Claim · model-written summary
Soil clay and CaCO3 contents significantly affected the extractable Si amount in calcareous soils.
- Taxon
- wheatTriticum aestivume0
- Compound
- CaCO3e2
- Outcome
- extractable Si amounte2
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Both the soil clay and CaCO3 contents significantly affected the extractable Si amount”
e0“Silicon (Si) fertilization can produce beneficial effect on the Siaccumulator—wheat (Triticum aestivum L.) grown on low available Si soils”
Claim · model-written summary
The quantities of Si extracted by the four extraction tests were in descending order: citric acid, then buffering NaOAc-HOAc, then Na2CO3 and NaHCO3.
- Taxon
- wheatTriticum aestivume0
- Outcome
- quantities of Si extracted by the testse1
- Direction
- in descending ordere1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The quantities of Si extracted by the tests was, in descending order: 0.025 M citric acid >> buffering NaOAc-HOAc (pH 4) >> 0.19 M Na2CO3 0.5 M NaHCO3 (pH 8.5)”
e0“Silicon (Si) fertilization can produce beneficial effect on the Siaccumulator—wheat (Triticum aestivum L.) grown on low available Si soils”
Claim · model-written summary
The critical value of available Si extracted by the NaOAc-HOAc method in calcareous soil was about 80 mg Si kg−1 (171 mg SiO2 kg−1).
- Taxon
- wheatTriticum aestivume0
- Outcome
- critical value of available Sie5
- Value
- 80 mg Si kg−1e5
- Qualifier
- 171 mg SiO2 kg−1e5
- Setting
- calcareous soile5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“The critical value of available Si extracted by the classical method (NaOAc-HOAc) widely adopted for the acid and neutral soils was about 80 mg Si kg−1 (171 mg SiO2 kg−1) in the calcareous soil”
e0“Silicon (Si) fertilization can produce beneficial effect on the Siaccumulator—wheat (Triticum aestivum L.) grown on low available Si soils”