Which of the following is not an advantage of drip-irrigation?

A.

Fertilizer can be applied through the system

B.

There is reduction in the concentration of salt in the root zone

C.

The system operates on a much lower line pressure than sprinkler system

D.

Its efficiency on water distribution in steep slopes is poor

Correct answer is D

Drip-irrigation is poor when applied in a steep slope.It is suited for plain lands.