Chapter:

Introduction

Define irrigation. Why it is necessary ?

Irrigation is defined as the  application of water to the land at regular intervals by means of canals and other artificial methods,  to fulfill the water requirements of crops so as to enhance agricultural growth and maintain the landscape during the periods of less average rainfall.

Necessity of Irrigation:
  • When the rainfall at any place is inadequate to meet the water requirements of crop, irrigation is required as per the following scheme:
snoRainfall (cm)Irrigation Requirements
1100Rainfall need to be supplemented by irrigation
2100 - 50Since rainfall is insufficient, irrigation is essential.
350 - 25Irrigation is essentially required.
4< 25No crop can be grown without irrigation.
Show More