Q94 of 103 Page 22

Farmers in Northern India grow legumes as fodder in one season and wheat in the next season.

(a) What is this practice known as ?


(b) How does this practice help in the replenishment of soil?

(a) Crop rotation

(b) The nitrogen-fixing bacteria present in root nodules of leguminous plants is rhizobium bacteria. Rotation of crops (leguminous and non-leguminous crops) in the same field replenishes the soil with nitrogen naturally and increases the soil fertility.


More from this chapter

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91

Arrange the following practices in the correct order as they appear in the sugarcane crop production:

Sending crop to sugar factory; Irrigation; Harvesting; Sowing; Preparation of soil; Ploughing the field; Manuring.

 92

Match items in column A with those in column B:

Column A


(i) Kharif crops


(ii) Rabi crops


(iii) Chemical fertilizers


(iv) Organic manure


Column B


(a) Food for cattle


(b) Urea and super Phosphate


(c) Animal excreta, cow-dung, and plant waste


(d) Wheat, gram, pea


(e) Paddy and maize

 93

Name two crops which are cultivated:

(a) by sowing seeds directly into fields.


(b) by transplanting.

 95

A student lists the following agricultural practices for crop production:

Irrigation; Removal of weeds; Preparation of soil; Storage of food grains; Sowing; Adding manure and fertilizers


Which agricultural practice is missing from the above list?