Answer:
(i)
Farmers discovered that planting these crops improved the fertility of the
soil.
(ii) Turnip was good fodder crop relished by cattle.
(iii) Farmers began cultivating these crops regularly and
made them a part of the cropping system.
(iv) Later, findings showed that these crops had the
capacity to increase the nitrogen content of the soil. Nitrogen is important
for crop growth and the land's fertility is renewed.
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