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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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basf fungicide test

BASF Fungicide Test

6 miles South of Eunice, LA


weather conditions
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
average vmd 0 05 level about the same for all levels
Average VMD (0.05 level):About the Same for All Levels

10 gpa – 261 um

5 gpa – 271 um

3 gpa – 237 um

percent coverage of test cards
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

results normalized based on sphere area for chemical concentration
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

surface coverage based on droplet presence
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
conclusions to basf test
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
spray plane testing equipment

Spray Plane Testing Equipment

Newer Stuff We Are Working On:

dry material quick analyzing plates
Dry Material Quick Analyzing Plates:
  • Vibratory plates tested at Biological and Ag. Department - Mazar et al., 2013
    • Mainly tested on small ground application
we tested system in the field with rice and fertilizer
We Tested System in the Field with Rice and Fertilizer:
  • Promising results:
    • Especially for rice seed, not as much for Urea
build three dimensional array for testing
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

small laser spot dye excitation on system for string
Small Laser Spot Dye Excitation on System for String

No Dye Individual Drops Dye on String

visual comparison of fluorometer readings from laser system compared to wrk system
Visual Comparison of FluorometerReadings from Laser System Compared to WRK System:

System may be able to tell individual droplets and sizes on string