Thursday, August 6, 2009

Facts

Irrigation is an artificial application of water to the soil. It is usually used to assist in growing crops in dry areas and during periods of inadequate rainfall.

Agricultural use of water accounts for nearly 70% of the water used throughout the world, and the majority of this water is used for irrigation.

There are several different systems that are used for irrigation purposes, including ditch irrigation, terracing, overhead irrigation, center pivot irrigation, lateral move irrigation, and drip or trickle irrigation.

Water in agriculture

Lack of water:-
Droughts
Unhealthy plants
Excess water:-
Plants to be washed away
Stagnent water breeds mosquitos in plantations

How water cycle affects water resource scarcity and how it affects human life.

Climate changes causes water scarcity
Scarcity : -
-Plants unable to grow healthily
-Low sea level, ships unable to move properly

How water is used in agriculture.

Wet rice agriculture requires alot of water
Advantages : -
More crops
Plants grow properly
Disadvantages : -
Water gets polluted