Question

why does the microbes plays an important role in agricultural management

Answer 1

because it helps the soil to be very fertlile to grow crops

Answer 2

microbes play an very important role in agriculture bcoz the soil microbe's are essential for decompising organic matter and recycling old plant material.
Some soil bacteria and fungi from relationships with plant roots that provides important nutrients like nitrogen and phosphorus
microbes also help in rhizobial inoculation