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Essential Nozzle Selection for Effective ASR Control in Soybean Applications

This document discusses the critical aspects of nozzle selection for agricultural spray applications, particularly focusing on the management of Asian Soybean Rust (ASR) and other crop diseases. Recommended droplet sizes of 220 microns or smaller enhance effectiveness. We explore BMPs (Best Management Practices) regarding application rates, nozzle types, and the importance of calibration for optimal performance. Emphasizing medium droplet use and twin nozzle packages is crucial for achieving desired coverage in fungicide applications on soybeans. Timely preparation and purchase of equipment are also highlighted.

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Essential Nozzle Selection for Effective ASR Control in Soybean Applications

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  1. Application Equipment for ASR • Bobby Grisso • Biological Systems Engineering

  2. New Technologies Needed?

  3. Droplet size and surface coverage. Droplet sizes of 220 microns or even smaller are suggested for ASR control.

  4. Spray droplet size classification and uses

  5. Spraying goals and specifications for glyphosate, insecticide and fungicide ground applications on soybeans.

  6. BMP’s for Nozzle Selection • Application rate = 20 GPA • Use MEDIUM droplets • Use a twin nozzle package • Purchase your nozzles NOW! • Prepare your sprayer and calibrate NOW!

  7. Effect of nozzle type on yield of soybeans under disease pressure.

  8. Turbodrop XL @ 20, 40, 80 psi XR Flat-fan @ 20, 40, 80 psi 20 40 80 20 40 80

  9. BMP’s for Nozzle Selection • Application rate = 20 GPA • Use MEDIUM droplets • Use a twin nozzle package • Purchase your nozzles NOW! • Prepare your sprayer and calibrate NOW!

  10. Nozzle Selection Chart: Flat-fan

  11. Soybean Rust – medium droplet

  12. Nozzle Selection Chart: Flat-fan X X X X

  13. Single Nozzle

  14. Single Nozzle

  15. Twin Nozzles

  16. Twin Nozzles

  17. Suggested spray height (from boom to top of crop canopy) and nozzle angle for fungicide application on soybeans.

  18. Air-assisted sprayers Air-assisted sprayers

  19. Air-assisted sprayers

  20. Electrostatic Spraying Spray Coupe with ESP

  21. Application Decisions?

  22. BMP’s for Nozzle Selection • Application rate = 20 GPA • Use MEDIUM droplets • Use a twin nozzle package • Purchase your nozzles NOW! • Prepare your sprayer and calibrate NOW!

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