Remediation of Arsenic Toxicity in the Soil-Plant System by Using Zinc Fertilizers

• 作者: Ishrat Jahan Sanchary Shah Muhammad Imamul Huq
• 来源期刊: 农业化学和环境(英文)
• 学科: 医学
• 关键词: REMEDIATION ARSENIC SOIL-PLANT SYSTEM
• 年，卷（期）: 2017,（1）
• 页码范围: 30-37
• 页数: 8页
• 分类号: R73

摘要

Availability of soil arsenic (As) and plant As at various levels of zinc (Zn) and As applications were examined. A pot-culture experiment with a leafy vegetable, Kalmi (Ipomoea aquatica), on an Inceptisols, was conducted where As was applied with irrigation water at the rates of 0 mg/L (As control), 0.5 mg/L, 1 mg/L and 2 mg/L and Zn was added to the soil as ZnCl2 solution at the rate of 0 mg/L (Zn control), 1 mg/L, 2 mg/L and 3 mg/L during pot preparation. The experiment was conducted in triplicates for 45 days till the plants were grown to maturity. At the end of the experiment the remedial effect of Zn on As toxicity was examined and as such, yield parameters, As and Zn accumulation in Kalmi plants, residual concentrations of As and Zn in soils and plants were measured. It appeared from the present study that there exists an antagonistic relationship between Zn and As i.e., Zn in soils was found to reduce As availability in soils as well as its accumulation in plants, particularly at an elevated application rate of 3 mg/L Zn. The findings could be used as a strategy to mitigate arsenic toxicity in As contaminated soils.