T8-1 Soil Science & Management, 4E Chapter 8 Water Conservation

T8-2 Soil Science & Management, 4E Objectives Explain the source of our fresh water supplies Explain the need for water conservation Describe ways to make better use of water Discuss water quality

T8-3 Soil Science & Management, 4E Terms to Know Aerationturf Antitranspirants Aquifer Arid climate Buffer strips Conservation tillage Consumptive use Contour tillage Evapotranspiration Furrow-diking Groundwater Hydrologic cycle Hydrophilic gel polymers Mulch Non-point sources Point sources Precipitation Runoff

T8-4 Soil Science & Management, 4E Terms to Know Semiarid climate Soil pitting Strip-cropping Stubble-mulching Subsoiling Surface water Syringing Terrace Water table Water-use efficiency

T8-5 Soil Science & Management, 4E The Hydrologic Cycle Figure 8-1

T8-6 Soil Science & Management, 4E Water Resources in the United States Figure 8-2

T8-7 Soil Science & Management, 4E Figure 8-4 Water Resources in the United States

T8-8 Soil Science & Management, 4E Reasons for Conservation Figure 8-5

T8-9 Soil Science & Management, 4E Reasons for Conservation Preservation of water resources Increased yields Reduced runoff

T8-10 Soil Science & Management, 4E Water Use Efficiency Capture more water from precipitation Reduce consumptive use Improve irrigation systems

T8-11 Soil Science & Management, 4E Capturing Water in Soil Improve filtration Lower percolation

T8-12 Soil Science & Management, 4E Capturing Runoff Improving water intake rate Figure 8-10

T8-13 Soil Science & Management, 4E Capturing Runoff Capturing snowfall Reducing percolation

T8-14 Soil Science & Management, 4E Reducing Consumptive Use Reducing evaporation Reducing transpiration

T8-15 Soil Science & Management, 4E Reducing Consumptive Use Improving plant-use efficiency Figure 8-13

T8-16 Soil Science & Management, 4E Water Quality Water quality is as important as water quantity

T8-17 Soil Science & Management, 4E Summary Major water supplies –Rainfall –Fresh surface water –Groundwater Best water use increases yields Erosion controlled Improve water use efficiency Consumptive use reduced Attention to contribution to water pollution