The figure shows two crop fields (plots A and B) have been treated by manures and chemical fertilizers respectively, keeping other environmental factors the same. Observe the graph and answer the following question.

Why does plot B show a sudden increase and then a gradual decrease in yield?

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Solution

Sudden Increase : Chemical fertilizer supplies the minerals immediately in good quantity.
Gradual Decrease : It is due.to depletion of nutrients caused by absorption by plants, leaching to lower layers of the soil and killing of decomposer microbes.

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Q. Figure 15.1 shows 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 question
(i) Why does plot B show sudden increase and then gradual decrease in yield?

The following figure shows the two crop fields (Plots A and B) have been treated by manures and chemical fertilisers respectively, keeping other environmental factors the same. Observe the graph and answer the following questions.

Why does plot B show a sudden increase and then a gradual decrease in yield?

Question 48
The below figure 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.

(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?
(iii) What is the reason for the different pattern of the two graphs?

The figure shows two crop fields (plots A and B) have been treated by manures and chemical fertilizers respectively, keeping other environmental factors the same. Observe the graph and answer the following question.

Why is the highest peak in plot A graph slightly delayed?

Explain what will happen if in a cultivated field only manures are supplied and in another field only fertilizers are supplied, keeping all other conditions similar.

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The figure shows two crop fields (plots A and B) have been treated by manures and chemical fertilizers respectively, keeping other environmental factors the same. Observe the graph and answer the following question.Why does plot B show a sudden increase and then a gradual decrease in yield?

Sudden Increase : Chemical fertilizer supplies the minerals immediately in good quantity.Gradual Decrease : It is due.to depletion of nutrients caused by absorption by plants, leaching to lower layers of the soil and killing of decomposer microbes.

The figure shows two crop fields (plots A and B) have been treated by manures and chemical fertilizers respectively, keeping other environmental factors the same. Observe the graph and answer the following question.

Why does plot B show a sudden increase and then a gradual decrease in yield?

Sudden Increase : Chemical fertilizer supplies the minerals immediately in good quantity.
Gradual Decrease : It is due.to depletion of nutrients caused by absorption by plants, leaching to lower layers of the soil and killing of decomposer microbes.