Fertilizers

Q. Compare the use of manure and fertilisers in maintaining soil fertility.

[3 Marks]

Q. Manure enhances the ___ of the soil.

1. lead content
2. fertility
3. vitamin content
4. water content

Q.

As a natural source of nutrient, manure is used to provide nourishment to the plants. But the nourishment given can be less. Why?

1. Manure is made up of poorly grown plants which have low nutrient value.

2. Manure is made up of organic waste, which may not have all the nutrients.

3. Manure does not mix well with the soil.

4. None of these.

Q. Manure helps in all of these, except

1. Improvement of soil structure
2. Prevention of weathering of rocks
3. Increase in water holding capacity of sandy soil
4. Decaying of organic matter and plant decay

Q. Manure damages the soil structure.

1. True
2. False

Q. 'X' is a source of nutrients for plants. It is prepared by the decomposition of plant waste and animal excreta. Given below are few uses of X. Identify the one which is not a use of X.

1. It increases soil fertility.
2. It increases soil microflora.
3. It prevents weathering of rocks.
4. It increases water holding capacity.

Q.

Manure enhances the _______ of the soil.

1. Colour

2. Fertility

3. Smell

4. Texture

Q. Manure contains large quantities of inorganic matter.

1. False
2. True

Q.

Manure enhances the _______ of the soil.

1. colour

2. salinity

3. fertility

4. smell

Q. The excessive use of ______ makes the soil less fertile.

1. nutrients
2. manure
3. humus
4. fertiliser