Abstract
Copper (Cu), zinc (Zn) and chromium (Cr) are pollutants that usually are accumulated in soils. Their toxicity can be decreased by applying amendments. We proposed to evaluate changes in Cu, Zn, and Cr availability, due to the application of amendments, through chemical analysis and phytotoxicity tests. The phytotoxicity test was carried out using species belonging to Sesbania genus; plant parameters were measured 48, 72, 96, and 168 hours after the start of incubation. The treatments included enriched soil, in addition to biosolid compost and triple superphosphate. Cu and Zn amounts were higher in treatments without amendments, indicating immobilization on the part of these. The amounts of Cr tended to decrease with amendments application. The amendments increased pH values and decreased EC; however, this had no impact on the results. No relationship was found among pH, EC, and plant parameters. Different behaviors were observed. S. virgata showed germination seed delay. In addition, while in S. virgata the IG increased during the assay, in S. punicea it diminished. The application of compost, fertilizer or both combined could be of interest for contaminated soils remediation. The use of chemical analysis and phytotoxicity tests allowed to estimate heavy metal availability and the effect on both Sesbania species.
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Claims 10
Claim · model-written summary
Cu and Zn amounts were higher in unamended treatments than in amended treatments, indicating immobilization.
Verbatim
e0“The phytotoxicity test was carried out using species belonging to Sesbania genus”
e1“The treatments included enriched soil, in addition to biosolid compost and triple superphosphate”
e2“Cu and Zn amounts were higher in treatments without amendments”
Claim · model-written summary
Amendment application tended to decrease Cr amounts in the soil.
Not reportedComparator
Verbatim
e0“The phytotoxicity test was carried out using species belonging to Sesbania genus”
e3“The amounts of Cr tended to decrease with amendments application”
Claim · model-written summary
Amendments increased soil pH values.
Not reportedComparator
Verbatim
e0“The phytotoxicity test was carried out using species belonging to Sesbania genus”
e4“The amendments increased pH values and decreased EC”
Claim · model-written summary
Amendments decreased soil EC.
Not reportedComparator
Verbatim
e0“The phytotoxicity test was carried out using species belonging to Sesbania genus”
e4“The amendments increased pH values and decreased EC”
Claim · model-written summary
No relationship was found among pH, EC and plant parameters.
Verbatim
e0“The phytotoxicity test was carried out using species belonging to Sesbania genus”
e5“No relationship was found among pH, EC, and plant parameters”
Claim · model-written summary
S. virgata showed germination seed delay.
Verbatim
e0“The phytotoxicity test was carried out using species belonging to Sesbania genus”
e6“S. virgata showed germination seed delay”
Claim · model-written summary
The germination index of S. virgata increased during the assay.
Verbatim
e0“The phytotoxicity test was carried out using species belonging to Sesbania genus”
e7“In addition, while in S. virgata the IG increased during the assay, in S. punicea it diminished”
Claim · model-written summary
The germination index of S. punicea diminished during the assay.
Verbatim
e0“The phytotoxicity test was carried out using species belonging to Sesbania genus”
e7“In addition, while in S. virgata the IG increased during the assay, in S. punicea it diminished”
Claim · model-written summary
Compost, fertilizer or both combined could be of interest for contaminated soil remediation.
Verbatim
e0“The phytotoxicity test was carried out using species belonging to Sesbania genus”
e1“The application of compost, fertilizer or both combined could be of interest for contaminated soils remediation”
Claim · model-written summary
Chemical analysis and phytotoxicity tests together allowed estimation of heavy metal availability and of the effect on Sesbania species.
SesbaniaOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The use of chemical analysis and phytotoxicity tests allowed to estimate heavy metal availability and the effect on both Sesbania species”