1. Chemigation Center Pivot Irrigation Robert Stadnicki

2. Chemigation According to the Washington State Dept of Agriculture, Chemigation is the application of a pesticide or a system maintenance compound through an irrigation system.

3. Center Pivot Irrigation A method of crop irrigation in which irrigation equipment rotates around a pivot. Most systems used to be powered by water but nowadays many systems are run by electric motors.

4. where and who Nebraska, Kansas, Idaho, North and South Dakota potato, cotton, sunflower farmers drought/desert lands

5. Manufacturers 1.Valmont “Valley” 1.Reinke “Electrogator” 1.Zimmatic 480 V systems 1.T-L Irrigation Hydrostatically powered*** Variable displacement hydraulic pumps

6. Positive Impacts Less complex guidance system than in a lateral irrigation system. reduced labor costs reduced water consumption

7. Negative Impacts Possibility of backflow Water pollution/contamination Using up aquifers/water supply

8. basics

10. Stripling Park Research

11. results... gps used to determine spots which need different application.

12. VRI (Variable Rate Irrigation) Now available in new systems or as an addition to old systems Farmers can apply different amounts of water to specific locations on field

13. Additional Possibilities for Improvement GIS programs such as MapWindow could be used to plan out soil maps, watersheds, possible drainage tile layouts, water mains, and so on. Along with GPS systems, sensors, controls, the center pivot could be transformed into a very successful precision farming technique.