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首页> 外文期刊>Pesticide Research Journal >Isoproturon Persistence in Field Soil and its Impact on Microbial Population under North-Western Himalayan Conditions
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Isoproturon Persistence in Field Soil and its Impact on Microbial Population under North-Western Himalayan Conditions

机译：西北喜马拉雅条件下田间土壤中异丙隆的持久性及其对微生物种群的影响

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摘要

Persistence and dissipation behavior of isoproturon and its impact on soil micro flora under field conditions was studied during Rabi season in mid hill zone of Himachal Pradesh in India. Isoproturon was applied as post emergence treatment to wheat crop at 1.5,2.0 and 2.5 kg ha~(-1) doses. Isoproturon residues in soil persisted up to 45,60 and 60 days at three rates of applications, respectively. Dissipation followed first order kinetics with half life in the range of 12.1 -21.0 days. Total microbial population in soil significantly declined over control at all the three levels of applications. However, the inhibitory effect of isoproturon was seen upto 10 days only. At 60 days after herbicide application and at the harvest of the crop, the differences among different treatments were non significant and thereby indicating that bacterial, fungal and actinomycetes population in isoproturon treated soil recovered from the initial setback in microbial population.
机译：在印度喜马al尔邦中部丘陵地区的拉比季节，研究了异丙基隆在土壤条件下的持久性和耗散行为及其对土壤微生物区系的影响。异proturon分别以1.5、2.0和2.5 kg ha〜（-1）的剂量用于小麦作物的出苗后处理。在三种施用率下，土壤中异丙隆的残留量分别持续长达45,60天和60天。耗散遵循一级动力学，半衰期为12.1 -21.0天。在所有三个应用水平上，土壤中的微生物总数均大大超过了控制水平。但是，异丙隆的抑制作用仅持续了10天。在施用除草剂后的60天和收获的农作物之间，不同处理之间的差异不显着，因此表明，异丙隆处理过的土壤中的细菌，真菌和放线菌种群从微生物种群的最初挫折中恢复了过来。

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