Irrigation and Drainage cont'd

Agricultural Science S.S.S 3 First Term

WEEK 11

Irrigation and Drainage cont'd

Performance Objectives

Student should be able to

    1. List the problems associated with irrigation and drainage systems.     

Content

Problems associated with irrigation

1. Irrigation increases weed competition.

2. It increases build-up and spread of pests and diseases.

3. Improperly managed irrigation can cause soil erosion/flooding.

4. It increases salinity (salt accumulation) which becomes toxic to crop plant.

5. Insufficient water supply.

6. High cost of equipment.

7. High cost of maintenance.

8. Inadequate technical know-how.

9. Damage of water pipes.

10. Blockage of underground irrigation water pipes.

11. Displacement of people through the construction of irrigation channels.

Problems of drainage

1. It is expensive to construct…