ORIGINAL RESEARCH
Effect of Carbendazim, Imazetapir and Thiram on Nitrogenase Activity, Number of Microorganisms in Soil and Yield of Hybrid Lucerne (Medicago media)
A. Niewiadomska, A. Sawicka
 
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Department of Agricultural Microbiology, August Cieszkowski Agricultural
University of Poznań, ul. Wołyńska 35, 60-637 Poznań, Poland.
 
Pol. J. Environ. Stud. 2002;11(6):737–744
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ABSTRACT
In field and pot experiments the effect of selected pesticides on the nitrogenase activity, num­ber of soil microorganisms, and yield of hybrid lucerne was investigated. The obtained results show that crop protection preparations applied in the experiment (seed dressing compound Funaben T and Pivot 100SL herbicide) reduced the activity of nitrogenase in the active strain of Sinorhizobium me­liloti both under conditions of pot and field experiments. In addition, the authors observed a noxious influence of the applied pesticides on nodulation, root development and yield of lucerne. Furthermore, in the first days after their application, the employed herbicide and fungicide inhibited mul­ti­pli­cation of soil microorganisms under lucerne plantations, while later they were found to stimulate their mul­ti­pli­cation.
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ISSN:1230-1485