1. Wind Break Irrigation By
C. Prestwich

2. Soil water extraction by Plants

4. Irrigation Water Filtration

5. Flat Screen filter

6. Disk Filter

7. Furrow Irrigation

8. Furrow Placement for Surface Irrigation

10. Sprinkler Irrigation

17. Drip Irrigation Systems

18. Isometric view of Drip Hose

19. Plan View of Drip Irrigation

20. Emitters: Wetted Diameter, Spacing, & Number/Tree

21. What exactly is Pw? For a lone tree Pw=Aw/Arz emitter Aw Tree trunk
Pw is the “average horizontal area wetted in the top 6 to 12 inches of the root zone as a percentage of the total crop area.” (NEH 623, Ch. 7)
For a lone tree
Pw=Aw/Arz
emitter Aw
Tree trunk
Surface area wetted
Arz

22. Percent Wetted Area & Number of EmittersSw
e= # of emitters/tree Se Sp Sr

23. Wetted diameter overlap