Question 48

Q48Multiple choice

Figure15.1 shows the two crop fields [Plots A and B] have been treated by manures and chemical fertilizers respectively, keeping other environmental factors same. Observe the graph and answer the following questions.

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(i) Why does plot B show sudden increase and then gradual decrease in yield?

(ii) Why is the highest peak in plot A graph slightly delayed? (ii) What is the reason for the different pattern of the two graphs? Fig. 15.1 IMPROVEMENT IN FOOD RESOURCES 91 16-04-2018

Hint: Hint: importance of organic matter can be included