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
Trees
Furrows
 



   

Sprinkler Irrigation

Rectangular spacing of sprinklers on a 24' x 24' Spacing
Tree
 
 
Tree sprinkler sprinkler

Triangular spacing of sprinklers on a 24' x 24' Spacing
Tree
 
 
Tree sprinkler sprinkler

Drip Irrigation Systems

Isometric view of Drip
Hose
Lateral
Emitter
      
       
Optional Weed barier
 
  
      
     
     

Plan View of Drip Irrigation
Snaking - Allow 5 to 10 extra feet of pipe for each 100 feet of lateral
Leave a minimum of 5 extra feet of pipe beyond last plant in the row
Last plant in the row end plug

Emitters: Wetted Diameter, Spacing, & Number/Tree

What exactly is P w
?
•
P w 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
P w
= A w
/ A rz emitter
A w
Tree trunk
Surface area wetted
A rz

Percent Wetted Area & Number of Emitters
S w
S p
S e
S r

Wetted diameter overlap