1. Irrigation & Agriculture
Agriculture- the largest user of water around the world.

2. Types of Irrigation Dry land farming Furrow irrigation
Flood irrigation
Spray irrigation
Drip irrigation

3. Dry land farming Farming in semi-arid regions without irrigation
Drought resistant crops
Conserves moisture in soil

4. Furrow Irrigation A trench is dug between rows of crops & flooded
Easy & Inexpensive
65% efficient
Runoff
Evaporation

5. Flood Irrigation Flood the entire field and let soak in
Easy & Inexpensive
Disruptive to crops
70-80% efficient
Evaporation

6. Spray Irrigation
Water is pumped from well into pipes spraying water across fields (think: Sprinklers!!)
Energy intensive
Expensive
Labor
materials
75-95% efficient

7. Drip Irrigation
A slow dripping hose laid on ground by plants or buried in soil
Expensive
Good with perrenials
Discourages weeds
95% efficient

8. Hydroponic Agriculture
Uses greenhouses where plants are rooted in water rather than soil
Expensive
More efficient
Exact nutrient delivery
Water can be recycled
Can grow in 3D
95% efficient on H20