Boucard Tatiana K, McNeill Charles, Bardgett Richard D, Paynter Christopher D, Semple Kirk T
Department of Environmental Science, Faculty of Science and Technology, Lancaster University, Lancaster, UK.
Environ Pollut. 2008 May;153(1):207-14. doi: 10.1016/j.envpol.2007.07.027. Epub 2007 Sep 17.
Sheep dip formulations containing organophosphates (OPs) or synthetic pyrethroids (SPs) have been widely used in UK, and their spreading onto land has been identified as the most practical disposal method. In this study, the impact of two sheep dip formulations on the microbial activity of a soil was investigated over a 35-d incubation. Microbial utilisation of [1-(14)C] glucose, uptake of (14)C-activity into the microbial biomass and microbial numbers (CFUs g(-1) soil) were investigated. In control soils and soils amended with 0.01% sheep dip, after 7d a larger proportion of added glucose was allocated to microbial biomass rather than respired to CO(2). No clear temporal trends were found in soils amended with 0.1% and 1% sheep dips. Both sheep dip formulations at 0.1% and 1% concentrations resulted in a significant increase in CFUs g(-1) soil and [1-(14)C] glucose mineralisation rates, as well as a decline in microbial uptake of [1-(14)C] glucose, compared to control and 0.01% SP- or OP-amended soils. This study suggests that the growth, activity, physiological status and/or structure of soil microbial community may be affected by sheep dips.
含有有机磷酸盐（OPs）或合成拟除虫菊酯（SPs）的羊药浴制剂在英国已被广泛使用，并且它们扩散到土地上已被确定为最实际的处置方法。在本研究中，在35天的培养期内研究了两种羊药浴制剂对土壤微生物活性的影响。研究了[1-(14)C]葡萄糖的微生物利用、微生物生物量中(14)C活性的摄取以及微生物数量（CFUs g(-1)土壤）。在对照土壤和添加0.01%羊药浴制剂的土壤中，7天后添加的葡萄糖有更大比例分配到微生物生物量中，而不是呼吸释放到CO(2)中。在添加0.1%和1%羊药浴制剂的土壤中未发现明显的时间趋势。与对照和添加0.01% SP或OP的土壤相比，浓度为0.1%和1%的两种羊药浴制剂均导致CFUs g(-1)土壤和[1-(14)C]葡萄糖矿化率显著增加，以及[1-(14)C]葡萄糖的微生物摄取量下降。本研究表明，羊药浴制剂可能会影响土壤微生物群落的生长、活性、生理状态和/或结构。
