Abstract
Two experiments were conducted about the effect of the application of phosphorus (P) or silicon (Si) on the arsenic (As) contents of Japanese mustard spinach (JMS) (Brassica rapa var. perviridis) grown on As contaminated soil (30.6 mg As kg). The P was applied with four different P fertilizers derived from both organic or inorganic sources viz. chicken manure (CM), bone powder (BP), fused magnesium phosphate (FMP), and super phosphate (SP). The P was applied at two rates (50 and 100 kg citrate soluble P2O5 ha). The As contents (mg kg dry weight [DW] and/or μg plant) in the edible part of JMS reduced significantly as compared to the As contents in control plant with the application of P, irrespective of the form of fertilizer and to the application rate of P. There was no significant difference among the P fertilizers as well as the rate of P application in reducing As contents in the plant. The growth of the plant and P concentration in the plant part increased significantly with the application of P. In the Si application experiment, Si was applied from three different sources viz. potassium silicate (PS), magnesium trisilicate pentahydrate (MTP) and lherzolite (LE). Silicon was applied at the rate of 1,050 Original Research Article Joardar and Kawai; IJPSS, Article no. IJPSS.2014.001 114 kg SiO2 ha. The As contents in the edible part of JMS increased, but not significantly, as compared to the As contents in control plant with the application of Si irrespective of the source of Si. There was no significant difference in the As contents in the edible part of the plant among the Si sources. The magnesium content in the plant part was increased significantly with the application of MTP and LE. The growth of the plant and the other mineral concentrations in the plant part was statistically similar as compared to the control plant. The results of two experiments indicated that the application of P could reduce the As contents in the edible part of JMS whereas Si had no effect to reduce As content in JMS under the employed condition.
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Claims 8
Claim · model-written summary
Applying P (from chicken manure, bone powder, fused magnesium phosphate or super phosphate) significantly reduced As contents in the edible part of Japanese mustard spinach compared with control plants.
- Taxon
- Japanese Mustard Spinach
Brassica rapa var. perviridist0 - Organ / stage
- edible parte1
- Treatment
- application of Pe1
- Outcome
- As contentse1
- Direction
- reducede1
- Comparator
- control plante1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“in the edible part of JMS reduced significantly as compared to the As contents in control plant with the application of P”
t0“Japanese Mustard Spinach”
Claim · model-written summary
There was no significant difference among the P fertilizers or among the P application rates in reducing As contents in the plant.
- Taxon
- Japanese Mustard SpinachBrassica rapa var. perviridist0
- Treatment
- P fertilizerse1
- Outcome
- reducing As contentse1
- Direction
- no significant differencee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“There was no significant difference among the P fertilizers as well as the rate of P application in reducing As contents in the plant”
t0“Japanese Mustard Spinach”
Claim · model-written summary
Plant growth and P concentration in the plant part increased significantly with P application.
- Taxon
- Japanese Mustard SpinachBrassica rapa var. perviridist0
- Treatment
- application of Pe1
- Outcome
- growth of the plant and P concentration in the plant parte1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The growth of the plant and P concentration in the plant part increased significantly with the application of P”
t0“Japanese Mustard Spinach”
Claim · model-written summary
Si application, whatever the source, increased As contents in the edible part of Japanese mustard spinach compared with control plants, but not significantly.
- Taxon
- Japanese Mustard SpinachBrassica rapa var. perviridist0
- Organ / stage
- edible parte1
- Treatment
- application of Sie1
- Outcome
- As contentse1
- Direction
- increasede1
- Qualifier
- but not significantlye1
- Comparator
- control plante1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The As contents in the edible part of JMS increased, but not significantly, as compared to the As contents in control plant with the application of Si irrespective of the source of Si”
t0“Japanese Mustard Spinach”
Claim · model-written summary
There was no significant difference in As contents in the edible part of the plant among the Si sources.
- Taxon
- Japanese Mustard SpinachBrassica rapa var. perviridist0
- Organ / stage
- edible parte1
- Treatment
- Si sourcese1
- Outcome
- As contentse1
- Direction
- no significant differencee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“There was no significant difference in the As contents in the edible part of the plant among the Si sources”
t0“Japanese Mustard Spinach”
Claim · model-written summary
Application of MTP (magnesium trisilicate pentahydrate) significantly increased magnesium content in the plant part.
- Taxon
- Japanese Mustard SpinachBrassica rapa var. perviridist0
- Organ / stage
- plant parte1
- Treatment
- MTPe1
- Outcome
- magnesium contente1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The magnesium content in the plant part was increased significantly with the application of MTP and LE”
t0“Japanese Mustard Spinach”
Claim · model-written summary
Application of LE (lherzolite) significantly increased magnesium content in the plant part.
- Taxon
- Japanese Mustard SpinachBrassica rapa var. perviridist0
- Organ / stage
- plant parte1
- Treatment
- LEe1
- Outcome
- magnesium contente1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The magnesium content in the plant part was increased significantly with the application of MTP and LE”
t0“Japanese Mustard Spinach”
Claim · model-written summary
With Si application, plant growth and the other mineral concentrations in the plant part were statistically similar to the control plant.
- Taxon
- Japanese Mustard SpinachBrassica rapa var. perviridist0
- Treatment
- Si applicatione2
- Outcome
- growth of the plant and the other mineral concentrationse1
- Direction
- statistically similare1
- Comparator
- control plante1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The growth of the plant and the other mineral concentrations in the plant part was statistically similar as compared to the control plant”
e2“In the Si application experiment”
t0“Japanese Mustard Spinach”
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