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2012 Pecan Disease Management Update Jason Brock Dept. of Plant Pathology, UGA-Tifton

2012 Pecan Disease Management Update Jason Brock Dept. of Plant Pathology, UGA-Tifton. Anthracnose Symptoms. 2009. 2010. Rainfall, Ponder Farm, 2011. Disease Cycle. Latent Infection “The state in which a host is infected with a pathogen but does not show any symptoms”.

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2012 Pecan Disease Management Update Jason Brock Dept. of Plant Pathology, UGA-Tifton

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  1. 2012 Pecan Disease Management UpdateJason BrockDept. of Plant Pathology, UGA-Tifton

  2. Anthracnose Symptoms 2009 2010

  3. Rainfall, Ponder Farm, 2011

  4. Disease Cycle Latent Infection “The state in which a host is infected with a pathogen but does not show any symptoms”

  5. Latent infections • Freeze, bleach, and ethanol dip • Pathogen grows saprophytically

  6. Leaf Sampling, 2011(No symptoms present at harvest)

  7. Rainfall, Ponder Farm, 2011

  8. Will anthracnose continue to be a problem? • What influences symptom development? • Non-chemical control? • Fungicides? • Selection • Timing

  9. Recommendations forControl of Anthracnose • Tree Health • Promote good air movement • protectantfungicide program • Strobilurins (Group 11) • Topsin • Phosphorous Acid Fungicides

  10. Abound, Headline, Sovran Absolute, Stratego, Quadris Top, Quilt Topsin

  11. Scab?

  12. A Great Year for a Spray Advisory (AWIS.com)? 2011 2102 ?

  13. Fungicide Application Strategies The Use of Reduced-Rate Fungicide Tax Mixes

  14. Fungicide Application Strategies Spiking Tank Mixes

  15. 2004 Wichita Fungicide Trial

  16. 2006 Wichita Fungicide Trial

  17. Fungicide Application Strategies Tank Mixing vs. Alternating

  18. 2006 Wichita Fungicide Trial

  19. 2010 Desirable Fungicide Trial

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