5.42 CORN - SURFACE OR SUBSURFACE IRRIGATION
SMART FARMING … Successful with consultants
LESSON 5.42 CORN -
SURFACE OR SUBSURFACE IRRIGATION
Surface Drip System: Typical
Design
·
One
drip laterals every 2 corn rows
·
Drip laterals every 1.5 m
·
Corn rows at every 0.75 m spacing
·
On lighter soil types, it is advantageous to
move corn rows closer to the drip line
·
(0.60 - 0.55 m spacing)
·
Sub-mains are above the surface
·
Use 6 - 8 mil wall thickness drip lines
Subsurface Drip System:
Typical Design
·
One drip laterals every 2 corn
rows
·
Drip laterals every 1.5 m
·
Corn row spacing can be reduced to 30 cm to the side of drip lateral to
minimize water use
·
Sub-mains are installed below the surface
·
Drip tape is installed 20 – 25
cm below the surface
·
Use 15 - 30 mil wall thickness
drip lines with 30 - 40 cm emitter spacing
·
Use media filtration to minimize blockage potential, maximizing longevity
of drip lines
·
GPS guided tractors critical for bed forming and sowing operations
·
SDI will match system water output with maximum daily crop requirement
·
Careful cultivation required over the top of drip lines
·
Can use offset deep rippers either side of the drip line to “renovate” beds
with
·
GPS guidance
More
Info … Grow successful with
consultant.
For successful SMART FARMING see 70 lessons about SUBSURFACE DRIP
IRRIGATION.
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