Articles
Effects of amendment on the quality of cherry radish (Raphanus sativus L. var. radicula Pers.) under cadmium contamination stress
Article number
1192_10
Pages
89 – 96
Language
English
Abstract
Pot experiments were carried out to investigate the effects of amendment on the soil organic matter content, pH, microbial quantity, Cd uptake and nutritional quality of cherry radish (Raphanus sativus L. var. radicula Pers.) planted in two levels (2 and 4 mg kg-1) of Cd-contaminated soil in which different concentrations of amendments (0, 600, 900 and 1200 mg kg-1) were added.
The results showed that when applying 900 mg kg-1 amendment, the organic matter contents, bacterial numbers and total microorganism amounts of 2 and 4 mg kg-1 of Cd-contaminated soil increased by 21.0 and 18.7%, by 106.4 and 59.0%, by 82.7 and 43.4%, respectively, comparing with no amendment application.
However, applying the amendment had no significant effect on the pH of soil, as well as the numbers of fungi and actinomycetes.
The security and nutritional quality of cherry radish were obviously improved comparing with no amendment application.
When applying 900 mg kg-1 amendment, the Cd contents of the edible parts of the cherry radish in 2 mg kg-1 and 4 mg kg-1 of Cd-contaminated soil decreased by 50.0 and 35.3%, respectively.
Furthermore, Vc, soluble sugar and dry matter increased by 7.6 and 9.9%, by 27.6 and 32.7%, by 13.3 and 11.6%, respectively.
In addition, the crude fiber contents of the cherry radish can be reduced by the amendment.
The results indicated that the complex amendment can obviously improve the quality of cherry radish and thus can be used in situ repair of Cd-contaminated soil.
The results showed that when applying 900 mg kg-1 amendment, the organic matter contents, bacterial numbers and total microorganism amounts of 2 and 4 mg kg-1 of Cd-contaminated soil increased by 21.0 and 18.7%, by 106.4 and 59.0%, by 82.7 and 43.4%, respectively, comparing with no amendment application.
However, applying the amendment had no significant effect on the pH of soil, as well as the numbers of fungi and actinomycetes.
The security and nutritional quality of cherry radish were obviously improved comparing with no amendment application.
When applying 900 mg kg-1 amendment, the Cd contents of the edible parts of the cherry radish in 2 mg kg-1 and 4 mg kg-1 of Cd-contaminated soil decreased by 50.0 and 35.3%, respectively.
Furthermore, Vc, soluble sugar and dry matter increased by 7.6 and 9.9%, by 27.6 and 32.7%, by 13.3 and 11.6%, respectively.
In addition, the crude fiber contents of the cherry radish can be reduced by the amendment.
The results indicated that the complex amendment can obviously improve the quality of cherry radish and thus can be used in situ repair of Cd-contaminated soil.
Publication
Authors
L.P. Hu, G.M. Liu, G.X. Zhou, R.R. Li, Y.Q. Wang, X.W. Tang, H.J. He
Keywords
cherry radish, cadmium, heavy metal, amendment, quality
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