Page 10 - Genius Kidz Prudence Learning Sc-8

4.

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5.

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Natural Methods of manuring the field : after sowing wheat for one season farmer

Field fallow : Fallow means to leave the field would sow a legume such as pea or groundnut.
idle for one or more seasons. It is one way of The legumes have nitrogen fixing bacteria;
allowing land to naturally regain its lost “rhizobium” . It fixes the atmospheric nitrogen
nutrients. Organic matter that collects on the to form water soluble nitrogen compounds.

land is decomposed by the microbes. Thus the Thus the soil gets ready for next wheat crop.
soil regains its lost fertility. Mixed cropping : Sometimes two or more
Crop rotation : Crop rotation is the practice of crops are grown together in the same field. The
growing a series of different types of crops on crops are chosen in such a way that the
the same land in sequential seasons. This is nutritional requirement of one crop is fulfilled

done so that the soil is not depleted of any by another crop. For example, legumes and
particular nutrient. For example, wheat uses cereals like wheat or maize can be grown
up large amount of nitrogen from the soil; so together.

Activity 3

Find out and give the specific fertilizer requirement for the following crops :
Wheat _____________________________________________________________________________
Cotton _____________________________________________________________________________
Tea _____________________________________________________________________________

Gram _____________________________________________________________________________
Maize _____________________________________________________________________________

4. Irrigation : places. The time and frequency of irrigation

Definition : Water is required for proper varies from crop to crop; soil to soil and season
growth and development of crops. Supply of to season. But the most important source is
water to the crop at different intervals is called rainfall.
irrigation. Requirement of irrigation : Irrigation is
Source of water for irrigation : Various required for germination of seeds, growth of

sources such as wells, canals, dams, stored plants, protection of crops from hot and dry
water, tube wells, etc are available at different conditions, etc.

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