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Deborah I. Breth, CCE-LOF Art Agnello, NYSAES, CU Elizabeth Tee, CCE-LOF

NYFVI Grant – Feb. 07-Jan 09 Testing the “PETE” Insect Developmental Model to Limit Resurgence of CM in Apples. Deborah I. Breth, CCE-LOF Art Agnello, NYSAES, CU Elizabeth Tee, CCE-LOF Funded by NYFVI and CCE-LOF. PETE?. MSU model for 8 different fruit pests

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Deborah I. Breth, CCE-LOF Art Agnello, NYSAES, CU Elizabeth Tee, CCE-LOF

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  1. NYFVI Grant – Feb. 07-Jan 09Testing the “PETE” Insect Developmental Model to Limit Resurgence of CM in Apples Deborah I. Breth, CCE-LOF Art Agnello, NYSAES, CU Elizabeth Tee, CCE-LOF Funded by NYFVI and CCE-LOF

  2. PETE? • MSU model for 8 different fruit pests • “Predictive Extension Timing Estimator” • Listed universally as the timing model for CM in University Guidelines. • Does it work?

  3. Testing PETE • 2 high pressure and 2 low pressure blocks • Treatments include: • a) MSU "PETE" CM model using first trap catch of the season with first generation spray at 200-250 DD (using a base temperature of 50 degrees F) and second generation spray at 1250 DD followed by a second application for each generation 10-14 days after the first. If greater than 5 moths per trap per week, continue spraying for the third generation • b) “Modified PETE” – based on seasonal trap catch data managing the first generation as above, 200-250 DD50 F, but using a trap threshold of 5 moths per trap per week, treating 7-10 days after exceeding that. • c) the grower standard

  4. Total Trap catch Per season -2007

  5. Recommended Spray Dates – BrownPETE -Jun 10, 22, Jul 28, Aug 9 Modified – Aug 15

  6. Recommended Spray Dates – HeberlePETE – Jun 7, 19, Jul 26, Aug 7Modified – Jun 7, 19, Jul 1, 13, 25, Aug 10, 22, Sep 3, 15

  7. Harvest Evaluations

  8. NYFVI - Trap Network • Pheromone traps (163) • 32 locations • to monitor adult CM, OFM, and LAW flight • use information to predict insect development and spray timing. • Traps were monitored weekly to maintain reliable data. • The trap data was entered into an Excel spreadsheet that could be viewed on the LOF website at http://www.fruit.cornell.edu/lof/trapreports/index.html) • Harvest evaluations and spray records are being complied to help growers identify any weakness in spray schedule.

  9. 2007 Harvest Survey • Number of growers – 78 • (up from 49 in 2006) • Number worms – 466 • CM – 83% - in 2002, 15%CM, 75% OFM • OFM/LAW – 16% • Unidentified – 8% • Number loads – 313 infested

  10. Harvest Survey • Send letter to growers identifying ticket number, dates and variety, and pest identified in load • Hope to identify specific problem areas • Increases awareness of a growing problem that will impact on the economics of the fruit industry.

  11. Managing CM and OFM with Mating Disruption • Isomate CM/OFM TT – 200 per acre • Second season at Kast and Russell • Splat – ISCA Tech formulation for CM and OFM to apply before fruit set for full season control • Checkmate CM-F, OFM-F – apply 2 applications per generation, continued regular insecticide applications the first season

  12. Mating Disruption with SPLAT for CM/OFM by ISCA Technologies - 2007

  13. Mating Disruption with Checkmate CM-F and OFM-F Sprayable by Suterra – 2007

  14. Checkmate CM-F/OFM-F Spray Records

  15. Does it pay if MD is 100-150/acre? • If 1000 bu/acre • If 40 lb/bu • If 9.5/lb for peelers and canners • If 7/lb for juice Then lose $1000 per acre • If 5/lb for juice • Then lose $1800 per acre

  16. Summary • Critical to know which leps are problems • CM is primary pest for most farms where internal lep pests are a problem, • but not all !! • Mating Disruption is viable option for high pressure orchards – need full insecticide program the first season • Adds significant expense to spray cost ? • Need cost analysis…rejected loads cost $500-1800 per acre depending on yield per acre and variety

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