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PHYTOTOXICITY OF SALTS IN COMPOSTED SEWAGE SLUDGE AND CORRELATION WITH SODIUM CHLORIDE, CALCIUM NITRATE, AND MAGNESIUM NITRATE
Cai, Hong1,2; Gao, Ding1
2011
Source PublicationJOURNAL OF PLANT NUTRITION
Volume34Issue:12Pages:1788-1796
AbstractThe phytotoxicity of salts in composted sewage sludge (CSS) was evaluated. Concentrations of sodium (Na(+)), chloride (Cl(-1)), calcium (Ca(2+)), and magnesium (Mg(2+)) were present at levels that would induce salt stress in plants. Nutrient imbalances were also found that would adversely affect the use of CSS as a growth medium. To further understand the phytotoxic nature of these salts, sodium chloride (NaCl), calcium nitrate [Ca(NO(3))(2)] and magnesium nitrate [Mg(NO(3))(2)] solutions were used to simulate the composition of salts found in CSS in an investigation of radish (Raphanus sativus L.) seed germination. High concentrations of Ca(2+) (92.1 mmol.L(-1)) and Mg(2+) (27.4 mmol.L(-1)) inhibited seed germination to an equal extent as did Na(+) (40.6 mmol.L(-1)). The lower concentration of Ca(2+) (10 mmol.L(-1)), however, significantly relieved the stress caused by NaCl. These results indicated that the composition and total amount of Na(+), Cl(-1), Ca(2+), and Mg(2+) in CSS should be carefully monitored before it is used as a soil amendment or growth medium.
SubtypeArticle
KeywordSewage Sludge Compost Salt Stress Nutrient Balance Phytotoxicity
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
WOS Subject ExtendedPlant Sciences
WOS KeywordTOMATO PLANTS ; SUPPLEMENTAL CALCIUM ; CUCUMBER SEEDLINGS ; POTASSIUM-NITRATE ; GROWTH ; STRESS ; SALINITY ; GERMINATION ; TOLERANCE ; RESPONSES
Indexed BySCI
Language英语
WOS SubjectPlant Sciences
WOS IDWOS:000297935500004
PublisherTAYLOR & FRANCIS INC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/68048
Collection中国科学院地理科学与资源研究所
Corresponding AuthorGao, Ding
Affiliation1.Chinese Acad Sci, Ctr Environm Remediat, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100101, Peoples R China
Recommended Citation
GB/T 7714
Cai, Hong,Gao, Ding. PHYTOTOXICITY OF SALTS IN COMPOSTED SEWAGE SLUDGE AND CORRELATION WITH SODIUM CHLORIDE, CALCIUM NITRATE, AND MAGNESIUM NITRATE[J]. JOURNAL OF PLANT NUTRITION,2011,34(12):1788-1796.
APA Cai, Hong,&Gao, Ding.(2011).PHYTOTOXICITY OF SALTS IN COMPOSTED SEWAGE SLUDGE AND CORRELATION WITH SODIUM CHLORIDE, CALCIUM NITRATE, AND MAGNESIUM NITRATE.JOURNAL OF PLANT NUTRITION,34(12),1788-1796.
MLA Cai, Hong,et al."PHYTOTOXICITY OF SALTS IN COMPOSTED SEWAGE SLUDGE AND CORRELATION WITH SODIUM CHLORIDE, CALCIUM NITRATE, AND MAGNESIUM NITRATE".JOURNAL OF PLANT NUTRITION 34.12(2011):1788-1796.
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