Question

Why is irrigation essential?

Answer 1

1. Irrigation maintains moisture in the soil
2. Irrigation is essential for the growth of the roots of the crop plants. 
3. Water supplies essential elements like hydrogen and oxygen to the crop.

Hope this helps...!!

Answer 2

i. it is necessary because it prevents the plant from frost and dry climate.
ii. It helps loosening of soil.
iii. Seeds do not germinate in the absence of scarcity of water.