Precision Irrigation By Steven Calhoun. Irrigated cropland Water is the most limiting resource for most producers in many regions. The law of minimum.

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Presentation transcript:

Precision Irrigation By Steven Calhoun

Irrigated cropland Water is the most limiting resource for most producers in many regions. The law of minimum – Limiting factor

Irrigated acreage In 2008 US farmers and ranchers irrigated 54.9 million acres of farmland.

Irrigation types Surface Drip/micro Pivot

Flood/Furrow Uses gravity to transport water management practices to consider include precision land leveling Auto steer rows/channels Hard to control

Flood/Furrow Water lost to runoff/evaporation Soil erosion Conventional tillage

Surface Irrigation

Drip/Micro High efficiency Well suited to automation Less labor intensive Precise application

Drip/Micro Problems Water quality is very important Limited from deep tillage Initial cost

Drip/mirco

Drip/Micro

Pivot Even application over field More efficient application Less runoff/evaporation

Pivot Maintenance Tracks Move for field operations

Variable Rate Irrigation provides precision control of all sprinklers on a pivot individually pulsing sprinklers NevTo&feature=player_embedded NevTo&feature=player_embedded

Variable Rate Software Rate management – Soil type – Dual crops Arial photo/Soil map Soil samples GPS recordings

Variable Rate Irrigation Central controller Node Valve Easy to apply

Variable Rate Irrigation p3R8&feature=player_embedded p3R8&feature=player_embedded

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