TY - SER AU - Heweidy,M.A. AU - Swelim,D.M. AU - Ismail,I.A. AU - Mahmoud,Nagwa M.A. TI - Effectiveness of two bradyrhizobium japonicum strains and soil application with some copper fungicides on soybean damping-off disease and plant biological activity KW - Copper hydroxide KW - Copper sulfate KW - Soybean KW - Disease and pest resistance KW - Fungicides KW - Testing KW - Damping-off diseases KW - Rhizobacteria N1 - Includes references N2 - Laboratory and greenhouse experiments were conducted to evaluate the effect of four copper fungicides namely, coprous oxide, copper hydroxide, copper oxychloride and copper sulfate in the presence of two different strains of B. japonicum on soybean damping-off disease and soybean plants. The introduced strains were HH-303 (fungicides resistant) and 3407 (fungicides sensitive). The reaction of copper fungicides on bradyrhizobial strains was studied in vitro (on the growth in culture) and in vivo (on nodule performance and N2-fixation). Also, pre- and post emergence damping-off, phosphorus and chlorophyll contents, enzymes activity and total counts of microorganisms in used soil were estimated UR - http://nile.enal.sci.eg/EALE/2005/ZJAR/3205/2/471.pdf ER -