1 / 19

Paper # AA06-009

The Effect of Application Volume and Deposition Aids on Droplet Spectrum and Deposition in Broccoli for Aerial Applications. Presented at the 2006 ASAE NAAA/ASAE Technical Session 40th Annual National Agricultural Aviation Association Convention Rosen Shingle Creek Hotel & Resort

kylar
Download Presentation

Paper # AA06-009

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. The Effect of Application Volume and Deposition Aids on Droplet Spectrum and Deposition in Broccoli for Aerial Applications Presented at the 2006 ASAE NAAA/ASAE Technical Session 40th Annual National Agricultural Aviation Association Convention Rosen Shingle Creek Hotel & Resort December 4-6, 2006 Paper # AA06-009 Biological and Agricultural Engineering

  2. Objective: The effect of application volume and deposition aids on droplet spectrum and deposition in broccoli for aerial applications.

  3. Materials and Methods: • Broccoli field in Yuma, Arizona • March 7 and 9, 2006 • 15 treatments • Products completely randomized • Broccoli was post harvest stage • Planted on ridges, double rows, 18-24 inches tall, and dense • Application Conditions: • Treatments 1-7 = 73°F and 40% RH • Treatments 8-15 = 48°F and 66% RH • Wind speed: • Range = 4-10 and 2-3 mph

  4. Materials and Methods: • AT 402B (Tri Rotor; Yuma, AZ and Lakin, KS) • Drop booms • CPTT11 nozzles with 8° deflection • 3 GPA (36 nozzles) CPTT11 - 15 • 5 GPA (36 nozzles) CPTT11 - 20 • 10 GPA (67 nozzles) CPTT11 - 30 • 58 - 73 psi (average = 62.8) • 128 – 141 MPH (average = 132.5 mph, GPS measured) • Aircraft Operation S.A.F.E. calibrated • Application Height 10-12 feet • Swath width = 60 feet

  5. Materials and Methods: • 5 deposition aids: • Interlock • Interlock + Preference • Interlock + Rivet • AG06011 • AG06038 • Water/Prime Oil/Red dye as a check • Spray mixes containing 50 gal • Prime Oil @ 3 ounces/acre • Tap water • Required amount of product or combination of products per label • Application volumes • 3, 5, 10 GPA

  6. Collection Procedure for canopy: • 1 pass • 5 collector areas evenly spaced across the swath width • 3 kromekote papers stapled to leaves • placed in top, middle, and bottom of canopy = 15 papers

  7. DropletScan used to analyze droplets: Water Sensitive Paper Software & lock-key Color Scanner Portable computer System Components Color Printer

  8. Analysis Procedure: • Scanned and recorded • 675 canopy papers (5 x 3 x 15 x 3) • % Area Coverage, droplet size characteristics, and number of droplets in the bottom, middle, and top of the broccoli canopy. • Statistical analysis with SAS • Proc GLM • LS Means compared • Alpha = .05

  9. Results and Discussion: • Comparison of locations in canopy • Comparison of application volume • Comparison of products vs. water • Percent area coverage • Number of droplets per square centimeter • Volume median diameter in lower canopy

  10. Coverage in Bottom of Canopy – 3 GPA:

  11. Coverage in Bottom of Canopy – 5 GPA:

  12. Coverage in Bottom of Canopy – 10 GPA:

  13. Percent Area Coverage Bottom Collectors Average = 0.85 a a b b b b b b b b b b b b b LSD = 0.87

  14. Droplets/Sq. cm - Bottom Collectors Average = 19.4 a ab abc abcd abcd abcde bcd de de de e e cde cde e LSD = 12.9

  15. VMD – Bottom of Canopy Average =284 LSD = 60.3

  16. Summary of findings: • The 10 GPA treatments of water only and the combination of Preference/Interlock provided significantly better coverage in the lower canopy. • There were no other significant differences measured among all other volumes and products. • For the 5 GPA treatments, the Interlock and the Interlock/Preference combination provided the best coverage. • Increased volume per acre improved coverage.

  17. Summary of findings cont.: • Deposition aids only slightly increased canopy penetration except with the 10 GPA treatments where water alone was best. • Higher application volumes increased the number of droplets measured in the lower canopy. • The combinations of Interlock/Rivet and Interlock/Experimental AG06030 at both 5 and 3 GPA improved the droplet count. • Interlock/Preference at 10 GPA had the most droplets in the lower canopy.

  18. Acknowledgements: • Agriliance • Tri Rotor- • Jim DeKoster - Pilot • Armando – Mix Master Thank you!

More Related