Drip irrigation:

A. Requires a leveling of the field so the water will flow in a consistent direction.
B. Requires a relatively flat area with barriers built up around the perimeter.
C. Supplies water through tiny holes in plastic tubes, so the amount of water delivered at any time is very small.
D. All of the above

The correct answer is:

Supplies water through tiny holes in plastic tubes, so the amount of water delivered at any time is very small. (C.)

Explanation:

Drip Irrigation is a type of irrigation system that delivers water to the plant roots directly or indirectly in minute quantities at a time. Like the name implies, the waters drips onto the plant roots either by a delivery system setup on the soil surface, or on delivery systems installed below the soil. It is a micro-irrigation system, and aims at reducing water wastage as well as preventing leaching.

The drip irrigation system is made up of some essential components no matter the design, and these components include:

a. Pump: the pump is the origin of pressure from which water flows to the delivery system to the plants.

b. distribution lines: this are channels through which water from the source gets to the plants.

c. Pressure control: this is a point in the system where the pressure is adjusted

d. emitters or dripping devices: these are made up of tiny apertures serving as outlets through which water drip out.

There may be other additional components, but these are the mahor components.

There are several advantages to using drip irrigation in addition to the ones mentioned above and these include:

1. reduces soil erosion

2. reduces weed growth

3. can be used on non leveled fields

4. fertilizer wastage is minimized

5. cost of labor is comparatively reduced

6. because of the low pressure, the energy cost is reduced.

The disadvantages include

1. clogging can occur because of low pressure

2. the irrigator does not see the amount of water applied in subsurface designs, so too little or too much water may be applied etc.