Irrigation

Q.

Why is irrigation essential ?

Q. What is furrow irrigation?

Q.

Define irrigation. Why is irrigation of crops essential ? Mention the harmful effects of excessive irrigation.

Q.

Define irrigation.

Q.

Explain advantages of irrigation ?

Q. What is the difference between canals and river lift system

Q.

Which river has the largest basin in India?

Q.

Mention three effects of excessive irrigation ?

Q.

________ is the scattering of seeds over the field by hand.

Q.

What is river lift system?

Q.

What kinds of crops are grown in intercropping ?

Q.

How does excessive irrigation lead to soil salinity ?

Q.

Explain various types of irrigation systems in India. How can efficiency of applied water be increased in agriculture.

Q.

6. Lack of rain cause _________.

Q.

How does river help in irrigation?

1. By providing water to the canal.

2. By filling up the tanks that store water for further use.

3. By direct usage of river water for irrigation.

4. All of these.

Q. The process of supplying water to crops at regular intervals is called

1. irrigation
2. cultivation
3. crop rotation

Q.

Small storage reservoirs which intercept and store the run-off of small catchment area are called___.

1. Canals

2. Wells

3. Tanks

4. None of these

Q.

What is water harvesting ?

Q.

At what time is irrigation required by all crops ?

Q.

Explain, how efficiency of irrigation can be increased.

Q.

Small storage reservoirs which intercept and store the run-off of small catchment area are called:

1. Canals

2. Wells

3. Tanks

4. None of these

Q.

List two main advantages associated with water harvesting at the community level?

Q.

Choose the correct option

Assertion (A): River lift system is more economical than a canal system for irrigation.

Reason (R): In the river lift system, a pump is used to lift the water from the river.

1. Both A and R are true and R is the correct explanation of A.

2. Both A and R are true, but R is not the correct explanation of A.

3. A is true but R is false.

4. A is false but R is true.

Q. Which of the following statement is correct with respect to irrigation?

1. Supply of water to households
2. Removal of water from crops
3. Supply of water to factories
4. Channeling water for agriculture

Q.

what happens when a matured wheat crop is irrigated ?

Q.

What is rainwater harvesting? Answer briefly.

Q. What are chemical fertilisers? [3 Marks]

Q.

Slow application of water drop by drop to the root zone of a crop is also called as drip irrigation.

1. False

2. True

Q.

Is rain water harvesting is a sustainable development?

Q.

Explain rain water harvesting.