Q7 of 465 Page 50

What should be do to get maximum benefit from a crop field?

To get the maximum benefit from a crop field, we should


(i) maintain the soil fertility through judicious use of manure and fertilizers.


(ii) practice crop rotation.


(iii) Timely irrigation should be done at right time.


(iv) Keep the weeds and insect pest population under control.


More from this chapter

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5

A field with maize and soybean plants is shown here


(a) What pattern of cropping does the field shows?


(b) Mention any two advantages of this type of cropping pattern.

 6

Look at Figures 1,2 and 3 given alongside and answer the following questions:


(a) What do these figures show all together?


(b) Which one is queen bee?


(c) Which one of them is the haploid, fertile male?


What it called?


(d) What is the status of the insect shown in the figure: individual? social?

 8

What are biofertilizers? In what sense are they better than chemical fertilizers?

 9

The production of food from animal sources has increased greatly in the last few decades. Justify it.