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ZJUS-A
Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering)  2002, Vol. 3 Issue (4): 467-474    DOI: 10.1631/jzus.2002.0467
Biotechnology & Life Sciences     
Alteration of certain soil microbiological and biochemical indices of a paddy soil under anthropogenic stress
Abid Subhani, LIAO Min, HUANG Chang-Yong, XIE Zheng -miao
College of Environmental and Resource Sciences, Department of Resources Science, Zhejiang University, Hangzhou 310029, China
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Abstract  A 21-day laboratory incubation experiment was conducted to investigate the impact of pesticides (insecticide, herbicide, fungicide) on paddy field soil health under controlled moisture (flooded soil) and temperature (25 °C) environment. The electron transport system (ETS)/Dehydrogenase activity showed negative correlation with pesticides concentrations, decreased with increase of pesticide concentration. The higher doses (5 to 10 times field rates) of pesticides significantly inhibited ETS activity, while lower rates failed to produce any significant reducing effect on the control. The toxicity of pesticides in decreasing the ETS activity was in the order: insecticide > fungicide > herbicide, irrespective of their rates of application. The pesticides increased the soil phenol content, which increased with increasing concentration of agrochemicals. The pesticide application did not produce any significant change in soil protein content. The response of biomass phospholipid content was nearly similar to that of ETS activity. The phospholipid content decreased with the addition of pesticides in the order insecticide > fungicide > herbicide and the toxicity was in the order: 10 FR (field rate) > 5 FR > 1.0 FR > 0.5 FR > control.

Key words： Electron transport system (ETS) activity      Phenol      Phospholipids      Protein      Pesticides      Submerged soil     
Received: 31 May 2001     
CLC:  S154.3  
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Abid Subhani
LIAO Min
HUANG Chang-Yong
XIE Zheng -miao
Cite this article:

Abid Subhani, LIAO Min, HUANG Chang-Yong, XIE Zheng -miao. Alteration of certain soil microbiological and biochemical indices of a paddy soil under anthropogenic stress. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2002, 3(4): 467-474.

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http://www.zjujournals.com/xueshu/zjus-a/10.1631/jzus.2002.0467     OR     http://www.zjujournals.com/xueshu/zjus-a/Y2002/V3/I4/467

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