Figure below shows the two crop fields (plot a and plot b ) have been treated by manures and chemical fertilisers respectively. Keeping other environmental factors same. Observe the graph and answer the following questions: (I) why does the plot b show sudden increases and then gradual decrease in yield? (II) why is the highest peak in a plot a graph slightly delayed? (Iii) what is the reason for the different pattern of the two graphs?
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Manures help in enriching soil with nutrients and organic matter and increase the soil fertility. They also improve the soil structure. ... Therefore, in plot A manures give high yield while plot B gives high yield for a short time and then it decreases.
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If we hold the current carrying conductor in the right hand such that the thumb points in the direction of the magnetic field lines, then the fingers encircle the wire in the direction of the electric current.
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