Journal of Food, Agriculture and Environment

Environmental risk assessment of soil and groundwater contamination with bio-organic fertilizer application

Author(s):

Xiaohou Shao^{1, 2} *, Xiujun Hu¹, Jie Shan ³, Linxian Liao ^{1, 2}, Junyi Tan ¹, Chantal Kwizera¹

Recieved Date: 2012-02-04, Accepted Date: 2012-04-27

Abstract:

Dairy industry, which generates a lot of cows manure, while producing milk has brought serious environmental pollution and ecological safety pressure. Meanwhile an unreasonable irrigation and irrational application of chemical nitrogen fertilizer has led to excessive nitrate accumulation in soil as well as excessive groundwater nitrate pollution. Considering above two issues, the earthworm effective microorganisms (EM) technology was adopted to ferment cow manure into bio-organic fertilizer for fertilization of cabbage. The purpose of this experiment was to study migration and accumulation of NO₃^--N, Cu and Zn in soil and groundwater after bio-organic fertilizer application. Analysis of the risk of nitrogen, Cu and Zn pollution in soil and groundwater was also conducted in this paper. Results showed that the bio-organic fertilizer application did not cause significant impact on NO₃^--N content of soil and groundwater and the pollution risk was minimal under the reasonable application, bio-organic fertilizer was suitable for the long-term application. 

Keywords:

Bio-organic fertilizer, NO₃^--N, heavy metals, pollution risk, soil groundwater system

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Journal: Journal of Food, Agriculture and Environment
Year: 2012
Volume: 10
Issue: 2
Category: Environment
Pages: 1209-1212

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