T9-1 Soil Science & Management, 4E Chapter 9 Drainage and Irrigation

T9-2 Soil Science & Management, 4E Objectives Define drainage and explain its importance Explain the difference between wetlands and wet soils Identify methods of artificial drainage Identify methods of irrigation Decide when and how much to irrigate Name water quality problems for irrigation

T9-3 Soil Science & Management, 4E Terms to Know Border-strip irrigation Capillary fringe Center-pivot irrigation Drainage Drip irrigation Furrow irrigation Hand-move irrigation Hydric soil Hydrology Leaching requirement Perched water tables Saline soil Seeps Solid-set irrigation Soluble salts Subirrigation Subsurface drainage Surface drainage Surface irrigation Traveling-gun irrigation Wetlands Wheel-move irrigation

T9-4 Soil Science & Management, 4E The Importance of Drainage Effects of poor drainage Figure 9-1

T9-5 Soil Science & Management, 4E Wetland and Wet Soils Wetlands –Water control –Water quality –Wildlife habitat –Recreation and education

T9-6 Soil Science & Management, 4E Wet soils Wetland and Wet Soils

T9-7 Soil Science & Management, 4E Artificial Drainage Surface drainage Subsurface drainage

T9-8 Soil Science & Management, 4E Irrigation Systems Figure 9-7

T9-9 Soil Science & Management, 4E Irrigation Systems Figure 9-8

T9-10 Soil Science & Management, 4E Irrigation Systems Subsurface irrigation Figure 9-9

T9-11 Soil Science & Management, 4E Irrigation Systems Surface irrigation –Border-strip irrigation –Furrow irrigation

T9-12 Soil Science & Management, 4E Irrigation Systems Sprinkler irrigation –Hand-move irrigation –Solid-set irrigation Figure 9-13

T9-13 Soil Science & Management, 4E Irrigation Systems Traveling-gun irrigation Center-pivot irrigation

T9-14 Soil Science & Management, 4E Irrigation Systems Wheel-move irrigation Microirrigation –Drip irrigation –Microspray irrigation Figure 9-18

T9-15 Soil Science & Management, 4E Using Irrigation Deciding when to irrigate Figure 9-20

T9-16 Soil Science & Management, 4E Using Irrigation How much to water Figure 9-21

T9-17 Soil Science & Management, 4E Using Irrigation Saving water Figure 9-22

T9-18 Soil Science & Management, 4E Water Quality Suspended solids Boron Soluble salts Figure 9-23

T9-19 Soil Science & Management, 4E Water Quality Figure 9-24

T9-20 Soil Science & Management, 4E Summary Advantages to artificial drainage Poorly drained O 2 deficient Irrigation supplies water Avoid water stress Watch water quality Use water efficiently