Wind Break Irrigation

By

C. Prestwich

Soil water extraction by Plants

Irrigation Water Filtration

Flat Screen filter

Disk Filter

Furrow Irrigation

Furrow Placement for Surface Irrigation

Sprinkler Irrigation

Drip Irrigation Systems

Isometric view of Drip Hose

Plan View of Drip Irrigation

Emitters: Wetted Diameter, Spacing, & Number/Tree

What exactly is Pw?• 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 treePw=Aw/Arz

Aw

Arz

emitter

Tree trunk

Surface area wetted

Percent Wetted Area & Number of Emitters

e= # of emitters/tree

SeSp

Sw

Sr

Wetted diameter overlap