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Reducing insecticide use in cucurbits through in-furrow seed specific application

Reducing insecticide use in cucurbits through in-furrow seed specific application. Jim Jasinski 1 , Matt Darr 2 , Reza Ehsani 2 , Erdal Ozkan 2 , Matt Sullivan 2 , Bob Precheur 3 1 IPM Program, 2 Food, Agriculture, and Biological Engineering, 3 Horticulture & Crop Science. Objectives.

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Reducing insecticide use in cucurbits through in-furrow seed specific application

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  1. Reducing insecticide use in cucurbits through in-furrow seed specific application Jim Jasinski1, Matt Darr2, Reza Ehsani2, Erdal Ozkan2, Matt Sullivan2, Bob Precheur3 1 IPM Program, 2 Food, Agriculture, and Biological Engineering, 3 Horticulture & Crop Science

  2. Objectives • To design a precision in-furrow insecticide applicator. • To determine the accuracy of the precision applicator at speeds of 1.4, 2, and 2.8 miles per hour with cucumber, zucchini, and pumpkin seed 3. To test the efficacy of the precision applicator using bioassays with striped cucumber beetles.

  3. Spray Tank Seed Monitor Sprayer Hose Conventional In-furrow Application Optical Sensor Continuous insecticide band over seed

  4. Spray Tank Seed Monitor Sprayer Hose In-furrow Application Optical Sensor Small insecticide band over seed

  5. Precision In-furrow Application Row Controller Spray Tank Sprayer Hose Optical Sensor Miniature Solenoid Small insecticide band over seed

  6. Row Controller Spray Pump Sprayer Hose Precision In-furrow Application Optical Sensor Miniature Solenoid Small insecticide band over seed

  7. Seed / Band Synchronicity Results Seed and water band synchronization based on the means of four 100 seed count replicates

  8. Bioassay Trials

  9. Bioassay Trials

  10. Bioassay Trials

  11. Bioassay Trials 24-72 hrs

  12. Bioassay TrialsStriped cucumber beetle survives… • Check plot beetles should survive • Insecticide band missed seed • Initial concentration of Admire per injection below effective range • Plant tissue has outgrown & diluted lethal Admire concentration

  13. Pumpkin Bioassay Trial *

  14. Cucumber Bioassay Trial

  15. Zucchini Bioassay Trial

  16. Bioassay Summary • 8 / 10 trials, Check had significantly less mortality than ALL other treatments • In the other 2 trials, Check had significantly less mortality than 2 other treatments • 2 / 10 trials, Cont. Flow had significantly higher mortality than both SSIII treatments (Z&C 2nd) • In general… • mortality decreased as seedling stage and size increased • mortality increased as Admire concentration increased • Some Striped Cuke beetles appeared to revive from their dead state…

  17. Environmental Summary Usage rates and PPM based on a seed specific in-furrow insecticide injection (SSIII) rate of 3 milliliters compared to continuous flow application. 1 SSIII high rate of Admire, 2 SSIII low rate of Admire, 3 Continuous flow rate of Admire

  18. Economic Summary Cost per acre for Admire ($4.30 / oz.) based on a seed specific in-furrow insecticide injection (SSIII) rate of 3 milliliters compared to continuous flow application. 16 oz. / A rate costs $68.80. 1 SSIII high rate of Admire, 2 SSIII low rate of Admire, 3 Continuous flow rate of Admire

  19. Project Summary • Multi-disciplinary team project • Designed and built Precision In-furrow Injector • 1 Row unit ca. $1,000; $300 for each extra row • Can be adapted to any planter, needs opt. seed tube • Synchronization of seed with injector band • Decreased as ground speed increased • Decreased as seed size decreased • Bioassay studies (P, Z, C) • 80% of trial treatments had significantly higher mortality than Check • Range of efficacy is very robust, very encouraging

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