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Evaluating Center Pivots in Missouri

Evaluating Center Pivots in Missouri. Joe Henggeler University of Missouri 38th ANNUAL MISSOURI IRRIGATION CONFERENCE Wednesday, Feb. 2, 2004 309 Hearnes Center, Columbia, MO. Team Up!. Irrigation Scheduling Proper fertigation (corn) Testing center pivots. Conducting a Test.

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Evaluating Center Pivots in Missouri

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  1. Evaluating Center Pivots in Missouri Joe Henggeler University of Missouri 38th ANNUAL MISSOURI IRRIGATION CONFERENCE Wednesday, Feb. 2, 2004 309 Hearnes Center, Columbia, MO

  2. Team Up! • Irrigation Scheduling • Proper fertigation (corn) • Testing center pivots

  3. Conducting a Test

  4. Conducting a Test

  5. Conducting a Test

  6. Other Data Collected • Pivot age / total hours of operation • Pressure at beginning & end

  7. Other Data Collected, cont. • Type of sprinkler • Weather conditions during the test

  8. Distribution Uniformity DU = x 100 Average catch of Low Quarter Average catch

  9. Irrigation Distribution Uniformity (DU) Average Low Quarter catch = 0.8” Average catch = 1.1”

  10. Irrigation Distribution Uniformity (DU) DU = (0.8 1.1) x 100 = 72% Average Low Quarter catch = 0.8” Average catch = 1.1”

  11. Evaluating Catch Amounts 10 ft

  12. Evaluating Catch Amounts 0.8 “ 0.3 “ 1.0 “ 0.7 “ 1.2 “ 10 ft

  13. Evaluating Catch Amounts 0.8 “ 0.3 “ 1.0 “ 0.7 “ 1.2 “ 10 ft (1.2 + 0.3 + 1.0)“ 3 = 0.8 (0.8 + 1.2 + 0.3)“ 3 = 0.7 (0.3 + 1.0 + 0.7)“ 3 = 0.7

  14. Lots of data !

  15. Problems with Systems

  16. Results

  17. Results, cont.

  18. Results, cont.

  19. Average Maximum Minimum

  20. Locations of Pivots Tested 2004 Tested 2003 Tested < 2003

  21. The End Joe Henggeler Delta Center Research Center 573-379-5431 Henggelerj@missouri.edu

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