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Fungicide Penetration Test on Rice

Fungicide Penetration Test on Rice. By Randy Price. BASF Fungicide Test. 6 miles South of Eunice, LA 6/21/2013. Weather Conditions:. Dry – Test not started until dew off of leaves Test Performed at 11:00 AM to 1:30 P.M. RH% - Approx. 60% to 45% at end of test Air Temp: Approx. 90 O F.

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Fungicide Penetration Test on Rice

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  1. Fungicide Penetration Test on Rice By Randy Price

  2. BASF Fungicide Test 6 miles South of Eunice, LA 6/21/2013

  3. Weather Conditions: • Dry – Test not started until dew off of leaves • Test Performed at 11:00 AM to 1:30 P.M. • RH% - Approx. 60% to 45% at end of test • Air Temp: Approx. 90OF

  4. Example of Test Cards - 10 GPA: Top Middle Lower

  5. Example of Test Cards - 5 GPA: Top Middle Lower

  6. Example of Test Cards - 3 GPA: Top Middle Lower

  7. Average VMD (0.05 level):About the Same for All Levels 10 gpa – 261 um 5 gpa – 271 um 3 gpa – 237 um

  8. Percent Coverage of Test Cards: This was percent coverage for the cards on the heavier coated side of plant: Back side of plant stem did not catch many droplets

  9. Results Normalized Based on Sphere Area for Chemical Concentration: 1x for 10 GPA; 2x for 5 GPA; 3.3x for 3 GPA These results try to account for equal chemical rates

  10. Surface Coverage Based on Droplet Presence: • What if any droplet will kill the fungus – Coverage shown below: • More even between the rates, except at the water level where the 10 GPA rate still had the most area coverage and penetrating power: • 40% coverage for 10 GPA versus 25 and 18 for the 5 and 3 GPAs, respectively

  11. Conclusions to BASF Test: • 10 gpa covered much better than other two rates • None of the gpa rates penetrated very well to lowest plant level (but a few droplets did make it to bottom) • 10 gpa penetrated the best (almost the same all the way to the middle level) • Agronomy counts showed pretty good control at all rates • BASF will rate this fungicide at 7 GPA to be safe

  12. Spray Plane Testing Equipment Newer Stuff We Are Working On:

  13. Dry Material Quick Analyzing Plates: • Vibratory plates tested at Biological and Ag. Department - Mazar et al., 2013 • Mainly tested on small ground application

  14. We Tested System in the Field with Rice and Fertilizer: • Promising results: • Especially for rice seed, not as much for Urea

  15. Build Three Dimensional Array for Testing: Force / Impact Plates Construct enough plates to create a 3-D system for analysis Electronics for automated data collection

  16. Small Laser Spot Dye Excitation on System for String No Dye Individual Drops Dye on String

  17. Visual Comparison of FluorometerReadings from Laser System Compared to WRK System: System may be able to tell individual droplets and sizes on string

  18. The End

  19. Top, Middle, and Lower Droplet Spectrum for 10, 5 and 3; 3 GPA Not as Well Formed

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