Question

(0 Why does the plot show sudden increases and then gradual decrease in yield?
( Why is the highest peak in a plot A graph slightly delayed?
(w) What is the reason for the different pattern of the two graphs?
Plot Al
Manures
Yield of the chop
[Plot BI
Chemical fertilizers
Quantity of amendment​

Answer 1

• The continuous use of fertilisers in an area destroy soil fertility so there is gradual decrease in yield after sometime. They also improve the soil structure. The plot A demonstrates the trend that the addition of manures into the soil have long term benefits in terms of high yield.