Q18 of 465 Page 54

In agriculture practices, higher input gives higher yield. Discuss how ?

In agriculture, higher yield can be achieved through higher yielding varieties, improved farming practices, modern technology, latest agricultural machines and implements, nutrient supply and continuous research etc. All these require high cost and knowledge of new techniques and improvements. Therefore, a farmer’s purchasing capacity for inputs determines the cropping system and production output.


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16

Arrange these statements in correct sequence of preparation of green manure:

(a) Green plants are decomposed in soil


(b) Green plants are cultivated for preparing manure or crop plants are used.


(c) plants are ploughed and mixed in soil


(d) After decomposition, it becomes green manure.

 17

An Italian variety Apis Mellifera has been introduced in India for honey production. Write about Its merits over other varieties.

 19

Discuss the role of hybridization in crop improvement.

 20

Define (i) Vermicompost; (ii) Green Manure; (iii) Biofertilizers.