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Precision Irrigation By Steven Calhoun

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

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Precision Irrigation By Steven Calhoun

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  1. Precision IrrigationBy Steven Calhoun

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

  3. Irrigatedacreage • In 2008 US farmers and ranchers irrigated 54.9 million acres of farmland.

  4. Irrigationtypes • Surface • Drip/micro • Pivot

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

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

  7. Surface Irrigation

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

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

  10. Drip/mirco

  11. Drip/Micro

  12. Pivot • Even application over field • More efficient application • Less runoff/evaporation

  13. Pivot • Maintenance • Tracks • Move for field operations

  14. Variable Rate Irrigation • provides precision control of all sprinklers on a pivot • individually pulsing sprinklers • http://www.youtube.com/watch?v=es_yv-NevTo&feature=player_embedded

  15. Variable Rate Software • Rate management • Soil type • Dual crops • Arial photo/Soil map • Soil samples • GPS recordings

  16. Variable Rate Irrigation • Central controller • Node • Valve • Easy to apply

  17. Variable Rate Irrigation • http://www.youtube.com/watch?v=cXhB6A-p3R8&feature=player_embedded

  18. Questions?

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