Q15 of 465 Page 54

Differentiate between compost and vermicompost.

Compost

1. It is prepared from all types of organic remains-garbage, sewage, sludge, animal refuse, farm waste, straw, uprooted weeds, etc.


2.Organic remains are decomposed by released enzymes of the microorganisms.


3. It takes 3 to 6 months to prepare.


Vermicompost


1. It is prepared from domestic waste, vegetable waste, uprooted weeds and farm refuse.


2. Organic remains are fed by earthworms and in pulverized state.


3. It takes 1 to 2 months to prepare and then is used in farms.


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Fill in the blanks:

(a) A total of ..nutrients are essential to plants.


(b) .....are supplied by air to plants.


(c) .... is supplied by water to plants.


(d) Soil supplies nutrients to plants.


(e) .....nutrients are required in large quantity and called as .....


(f) .......nutrients are needed in small quantity for plants and are called ......

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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.

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