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- Title
The Soil Amendments to Improve the Efficiency of the Intercropping System of Pteris vittata and Morus alba.
- Authors
Wan, Xiaoming; Yang, Junxing
- Abstract
Intercropping of arsenic (As) hyperaccumulator Pteris vittata and cash crop Morus alba could improve the As concentration in the hyperaccumulator but decrease As concentration in the intercropped crop. The effects of several amendments on the transfer of As were investigated to determine an enhancement strategy for the intercropping system of P. vittata and M. alba. Phosphorus, in the form of Ca(H2PO4)2, promoted the release of As to the soil solution and apparently increased the As removal from the soil by 42% compared with the untreated variant. The addition of FeSO4 and CaCO3 decreased As concentration in the soil solution and the uptake of As by both plant species. The As levels in the mulberry leaves remained under the threshold limits of feedstuffs in China. Intercropping was confirmed as an applicable strategy to manage contaminated soil. Hence, under the condition that all treatments produced safe mulberry leaves, Ca(H2PO4)2 was the appropriate amendment to achieve the highest As removal rate, whereas FeSO4 could lower the risk of As to further migrate to another medium.
- Subjects
WHITE mulberry; PHYTOREMEDIATION; INTERCROPPING; CASH crops; SOIL pollution
- Publication
Water, Air & Soil Pollution, 2018, Vol 229, Issue 5, p1
- ISSN
0049-6979
- Publication type
Article
- DOI
10.1007/s11270-018-3805-2