Over the two-year study (2008–2009) we monitored the influence of integrated and conventional
production systems on microbiological activity in soil and strawberry yield. The experiment also involved
fertilizers applied in three variants of treatment. The studied parameters were monitored over 2008 and 2009 by
determining the total number of soil microorganisms, the number of ammonifying bacteria and the strawberry
yield. The results of the study suggest the pronounced inhibitory effect of insecticides on number of studied
microorganism groups in all three conventionally treated variants, over the both years of study, which further
infers negligible stimulative influence of strawberry plants on yield.