Transmittance of trace elements in to the animal system through soil-water-plant continuum under peri urban environment in hyderabad city of India
(0) With rapid urbanization and industrialization in major cities, large quantities of industrial effluents get mixed with urban sewage water. The soils irrigated continuously with such polluted water were subject to chemical degradation. In the water- soil-plant-animal continuum, the contaminants may be carried over to the animal system. Keeping this in view, a survey was carried out in and around Ranga Reddy and Hyderabad districts to know the trace element contamination in water, soils and plants growth, like Para grass, rice and vegetables and also in the milk of the animals fed with Para grass. The water in the Musi River is highly polluted by trace elements and so the soils are being irrigated with this water. Para grass grown in this polluted soil also contained high concentrations of Pb, Zn, Cr, Ni and Cd. Milk collected from the animals fed on these grasses also contained potentially toxic elements such as Cr, Pb, Cd, Mn, Ni and Zn. The concentrations of Cr, Ni, Co and Pb in rice grains harvested from thefields irrigated with the polluted Musi River water were higher than the permissible limits. Among the vegetables, leafy vegetables were highly contaminated with the heavy metals followed by tuber vegetables and others. Application of organic matter at 10t ha<-1> has mitigated the ill effects of these pollutants by suppressing the trace element concentrations in the crops.
animal contaminants continuum effluents plant soil
P. Raghava Reddy Bhupal Raj
Director of Research, Acharya N. G. Ranga Agricultural University, Rajendranagar, Hyderabad-500 030, Senior Scientist & Head, AICRP on Micro Nutrients, ARI Campus, ANGRAU., Hyderabad, India
国际会议
第九届痕量元素生物地球化学国际会议(9th International Conference on the Biogeochemistry of Trace Elements)
北京
英文
109-110
2007-07-15（万方平台首次上网日期，不代表论文的发表时间）