Determining the Risk Window for Aster Yellows in Carrot: New ...

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Seasonal trends: ALH abundance Fit random effects model to data Extract the conditional expectation of the values for Julian Date (i.e. BLUPs for Julian Date) Plot BLUPs vs. Julian date and fit cubic polynomial Solve for S = 0 X 1 : 155 (June 3) X 2 : 216 (August 3) X 3 : 265 S(λ, df) vs. Julian day for all traps in all fields in all years Above average ALH catches between X1 and X2 Risk “window”
Seasonal trends: ALH infectivity Using similar methodology to examine ALH infectivity Above average ALH infectivity X 1 : 139 (May 18) X 2 : 197 (July 15) X 3 : 259 Risk “window”
Page 1 and 2: Determining the Risk Window for Ast
Page 3 and 4: Factors Influencing Insect Pest Man
Page 5 and 6: Presentation Outline Goal - Sustain
Page 7 and 8: Aster yellows: in carrot Disease in
Page 9 and 10: Vector: Aster leafhopper (ALH) Adul
Page 11 and 12: Aster yellows management WI AY mana
Page 13 and 14: Research and project goal Advance o
Page 15 and 16: Part I: Research questions AYI = re
Page 17 and 18: Part I: variance component analysis
Page 19: Part I: detection of seasonal trend
Page 23 and 24: Concurrence of AY risk “windows
Page 25 and 26: Research update Part I) Identify tr
Page 27 and 28: Part II: Temperature and ALH develo
Page 29 and 30: Latitude Part II: Thermal time mode
Page 31 and 32: Ongoing and future research We have
Page 33 and 34: Overall summary: refining the AYI A
Page 35: QUESTIONS

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