title: Time-dependent movement and distribution of chlorpyrifos and its metabolism in bamboo forest under soil surface mulching.
abstract: The dissipation and distribution of chlorpyrifos (CHP) granule formulation in bamboo forest under soil surface mulching conditions (CP) and noncovered cultivation conditions (NCP) from soil to product were investigated. In the CP treatment, the CHP granule with slow-release effect leached from the topsoil to the subsoil. Conversely, the CHP was fixed in the topsoil (0-5 cm layer) in the NCP treatment, and no obvious leaching effect could be observed. The residue of CHP could be found in bamboo shoots from CP treatment, mainly at the bottom part (5 cm length). CHP could be degraded into 3,5,6-trichloro-2-pyridinol (TCP) in the soil and bamboo shoots. In addition, the straw used as the mulching material with higher OM and pH had some regulatory role in changing the pH and OM characteristics of the soil. Thus the straw could indirectly affect the adsorption and degradation behavior of CHP and TCP in the soil.
authors: Research Institute of Subtropical Forestry, Chinese Academy of Forestry , Fuyang 311400, People's Republic of China.
authors: Yihua
authors: Y
authors: Liu
authors: Danyu
authors: D
authors: Shen
authors: Donglian
authors: D
authors: Zhong
authors: Runhong
authors: R
authors: Mo
authors: Zhanglin
authors: Z
authors: Ni
authors: Fubin
authors: F
authors: Tang
mesh_terms: D000327:Adsorption; D000818:Animals; D031723:Bambusa / Q000378:metabolism*; D004390:Chlorpyrifos / Q000032:analysis / Q000737:chemistry* / Q000378:metabolism*; D018556:Crops, Agricultural / Q000737:chemistry; D065928:Forests; D006801:Humans; D006863:Hydrogen-Ion Concentration; D007306:Insecticides / Q000032:analysis*; D010573:Pesticide Residues / Q000032:analysis*; D012987:Soil / Q000737:chemistry*; D012989:Soil Pollutants / Q000032:analysis
chemical_list: D007306:Insecticides; D010573:Pesticide Residues; D012987:Soil; D012989:Soil Pollutants; D004390:Chlorpyrifos