wind break irrigation by c. prestwich. soil water extraction by plants
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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
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