Question

1.
Define irrigation Why is irrigation of crops essential ? Mention the harmful effects of excessive irrigation​

Answer 1

Answer:

Irrigation is the process of applying controlled amounts of water to plants at needed intervals. Irrigation helps to grow agricultural crops, maintain landscapes, and revegetate disturbed soils in dry areas and during periods of less than average rainfall.

Harmful effects of excessive irrigation:

Excess of water in soil leads to water logging.

Sometimes, it inhibits the process of germination.

Roots do not grow properly in a standing water field.

Excess irrigation destroys standing crops.

Increases the amount of salt on the surface soil as water evaporates.

Answer 2

Answer:

The process of watering the crops is called irrigation.

It helps to cultivate superior crops with the water supply as per need of the crops. Ultimately it helps in economic development. Irrigation water improves water conditions in the soil, increases the water content of plant fibers, dissolves nutrients & makes them available to plants.

Harmful effects of excessive irrigation:

1.Excess of water in soil leads to water logging.

2.Sometimes, it inhibits the process of germination.

3.Roots do not grow properly in a standing water field.

4.Excess irrigation destroys standing crops.

5.Increases the amount of salt on the surface soil as water evaporates.