Manuring

Q.

Do you think that it is better to use compost instead of chemical fertilizers? Why?

Q.

What is integrated farming?

Q.

Define fertilizer?

Q.

What are the benefits of the Haber process?

Q. Define: Green manure

Q.

Horticulture means

1. Growing of fruits and vegetables

2. Primitive farming

3. Growing of wheat

4. None of the above

Q.

State the conditions under which Hydrogen is made to react with Nitrogen in the Habers process.

Q. How is green manure prepared? Give a schematic representation of the preparation of green manure.

Q. What is manure? How does green manure differ from biofertilizers?

Q. What is natural manure ? How to prepare it? Give two examples?

Q.

Is Rhizobium a biofertilizer?

Q.

Why is excess use of fertilizers detrimental for the environment?

Q.

Manures are commercially produced synthetic chemical substances

1. True
2. False

Q.

Hydrogen, along with nitrogen is used in the manufacture of __________ gas.

Q.

Man-made chemicals which increase the fertility of the soil, are called artificial ______.

Q.

Vermicompost is a

1. Manure

2. Excreta of earthworm

3. Both

4. None

Q. 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 plant parts are used.
(c) Plants are ploughed and mixed into the soil.
(d) After decomposition it becomes green manure.

Q.

As a part of eco-club activity students were asked to raise a kitchen garden in the school premises. They were provided with some materials given in the box. List the other materials you would require. How will you plan the garden? Write the steps.

Q. For biogas production, besides dung, which of the following is used as manure?

1. Eichhornia
2. Parthenium
3. Glycine
4. Arachis

Q.

Manure enhances the _______ of the soil.

1. salinity
2. smell
3. fertility
4. colour

Q. What are the advantages of using manures in the crop fields?

Q. Organic manure adds organic matter called ____________ to the soil, which restores the soil texture for better retention of water and aeration of soil.

1. compost
2. animal manure
3. humus
4. both $A$ and $C$

Q.

Explain the merits and demerits of organic farming in a highly populated nation like India.

Q. Which of the following elements is present in manure?

1. Carbon
2. Lead
3. Nitrogen
4. None of these

Q. .......... is prepared by the decomposition of animal excreta and plant waste.

Q. .......... provides humus to the soil.

1. Manure
2. Organisms
3. Fertilizers
4. All of the above

Q. What is meant by concentrated organic manure and macro organic manure?

Q.

Give one disadvantage of fertilizers.

Q. Choose the correct options from the following that describe the disadvantage of using manure

1. Manures are bulky and can't be easily stored or transported.
2. They have less amount of nutrients as compared to fertilizers.
3. Both A and B
4. None of the above

Q. ___________ manures are refuses of plants and animals which are bulky in nature and supply nutrients in small quantities, and organic matter in large quantities.

1. Nitrogeneous
2. Inorganic
3. Natural
4. Artificial