1/13/2017. How can we best manage early blight? Foliar Disease Management. Products Tested in IPC-Funded Trials

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1 Folir Disese Mngement Trent Tysom How often do you spry for folir disese (NOT lte light)? 4% 35% 3% 25% 2% 15% % 5% % 5. 5 or more 3% 14% 38% 21% 24% or more Photo courtesy P. Whrton How cn we est mnge erly light? Erly light Alternri solni Brown Lef Spot Alternri lternt Plnt resistnt vrieties where possile. Mintin dequte crop fertility. Apply fungicides efore disese is estlished. Avoid curtive pplictions! Use fungicides ppropritely. Effective product choice nd tnk mixtures Rottion Proper rtes nd timing Products Tested in IPC-Funded Trils How effective is your fungicide progrm? Aproch Gem Penncoze Tnos Bdge SC Hedline Polyrm Vertisn Brvo WS Inspire Prixor Wetcit Crio Plus Lun Privilege Qush Zing! Cupridyne Lun Trnquility Reson Zoxium Dithne F45 nd DF Mnzte Revus Top Doule Nickel Omeg Rovrl Echo DF nd ZN Omeg Top Scl Endur Qudris Serende Gvel Qudris Top Super Tin 1. Very effective 2. Adequte 3. Not good enough 5% 4% 3% 2% % % 46% 43% 11% Very effective Adequte Not good enough 1

2 Do you tnk mix fungicides when trgeting erly light? Premium Erly Blight Fungicides 1. Yes 2. No 9% 8% 7% 6% 5% 4% 3% 2% % % 78% Yes 22% No QoI Fungicides Group 11 Qudris Hedline Evito Gem Tnos Reson Qudris Opti (lso group M5) Qudris Top (lso group 3) Orgnotin Group 3 Super Tin Stronger on lte light Trizoles Group 3 Revus Top (lso group 4) Qudris Top (lso group 11) Qush Croxmides Group 7 Endur Lun Trnquility (lso group 9) Vertisn Prixor Pyrimethnil Group 9 Scl Lun Trnquility (lso group 7) Strong on gry mold Strong ginst white mold Percent EB Control with QoI Fungicides (Group 11) Miller Reserch Trils Qudris Hedline Tnos Reson MOA Trget Site Group Nme Chemicl Group Common Nmes FRAC Code Respirtion SDHI Pyrdinyl-ethyl-enzmides Fluopyrm (succinte dehydrogense inhiitors) Pyrzole-croxmides Benzovindiflupyr Fluxpyroxd Complex III Penflufen Penthiopyrd Sedxne Pyridine-croxmides Bosclid QoI fungicides Methoxy-crltes Azoxystroin (Quinone outside Picoxystroin inhiitors) Methoxy-crmtes Pyrclostroin Oximino cettes Trifloxystroin Complex II Oxzolidine-diones Fmoxdone Dihydro-dioxzines Fluoxstroin 7 11 Imidzolinones Fenmidone MOA Trget Site Group Nme Chemicl Group Common Nmes FRAC Code Respirtion Complex III Complex II SDHI (succinte dehydrogense inhiitors) QoI fungicides (Quinone outside inhiitors) Pyrdinyl-ethyl-enzmides Fluopyrm Lun Trnquility Pyrzole-croxmides Eltus Prixor Emesto Vertisn Pyridine-croxmides Endur Benzovindiflupyr Fluxpyroxd Penflufen Penthiopyrd Sedxne Bosclid Methoxy-crltes Azoxystroin Qudris, Aproch Picoxystroin Methoxy-crmtes Hedline Oximino cettes Oxzolidine-diones Gem Tnos Pyrclostroin Trifloxystroin Fmoxdone 7 11 How do you void fungicide resistnce? 1. Apply fungicides in preventtive, not curtive mnner. 2. Rotte products use different chemistry groups. Tnk mixing my compenste 3. Tnk mix two different ctive ingredients for the trget pthogen. Dihydro-dioxzines Evito Fluoxstroin Imidzolinones Reson Fenmidone 2

3 Fungicide Appliction Proper Timing - 9% Efficcy Fungicide Appliction Lte Timing - 9% Efficcy Two Anlogies A 541 Effect of Fungicide Timing on Erly Blight Russet Burnk, August 16, % EB Severity B 561 B 568 AB 563 B 582 AB 57 2 Timing Dose UTC Endur (5.5)+ Endur (5.5)+ Qudris Top(8) Qudris Top(8) Qudris Top(8) Qudris Top(8) Qudris Top(8) Omeg Top(7) Revus Top(5.5) Revus Top(5.5) White Mold Control Timing Reltive mount Spores Infection Visile Disese Pre Row Close Row Close First Trsh First Hyphe First Disese 3

4 Reltive mount White Mold Control Timing Spores Infection Visile Disese Pre Row Close Row Close First Trsh First Hyphe First Disese # Foci/68 row ft Applictions (~ dy): 1. July 9 (Row closure) 2. July 2 (After first trsh) 3. August 2 4. August 12 AB UTC Effect of Fungicide Timing on White Mold Western Russet, 211 BC Endur(5.5)+Brvo(1) Endur(2.5)+Brvo(1) A Endur(5.5)+Brvo(1) Endur(2.5)+Brvo(1) C Endur(2.5)+Omeg(5.5) Endur(2.5)+Omeg(5.5) Erly Blight Severity 216 White Mold Incidence June 22 2 July 7 3 July Aug 4 1 June 22 2 July 7 3 July Aug 4 Endur (5.5) cde Endur (5.5) -e Endur (5.5) c-f Endur (5.5) -e c-f def Totl Yield June 22 2 July 7 3 July Aug 4 Endur (5.5) Endur (5.5) 683 ghi 79 -g 7 c-h 692 e-i IF April 29 Erly Blight Severity 216 Plnt June 9 1 June 22 2 July 7 3 July Aug 4 g fg c-f c-f d-g efg

5 White Mold Incidence Totl Yield IF April 29 Plnt June 9 1 June 22 2 July 7 3 July Aug 4 IF April 29 Plnt June 9 1 June 22 2 July 7 3 July Aug ghi ef f def def c-f def Brvo Brvo Brvo Brvo Brvo Brvo 692 e-i 722 -f 73 -e 736 c Qush Timing Totl Yield d Endur (5.5) Endur (5.5) 739 c Endur (5.5) Endur (5.5) 76 Qush(2.5) Qush(2.5) Endur (5.5) Endur (5.5) Qush(2.5) Qush(2.5) 734 cd Endur (5.5) Endur (5.5) Qush(2.5) 77 Qush(2.5) Endur (5.5) Endur (5.5) 76 Qush(2.5) Endur (5.5) Endur (5.5) 769 Qush(2.5) Endur (5.5) Endur (5.5) Qush(2.5) 727 cd Endur (5.5) Endur (5.5) Qush(2.5) 722 cd Qush(2.5) Qush(2.5) Effect of Adjuvnt Mixed with 8 fl oz of Lun Trnquility Erly light/rown lef spot severity August 22, 212 c c Applictions: July 7 July 17 July 27 August 8 c c c UTC Lun T. Alone Bond (4 fl oz) Syl-Tc (4 fl oz) MSO (.5 % NIS (.5 % Wetcit (.375 % Effect of Adjuvnt Mixed with 8 fl oz of Lun Trnquility Erly light/rown lef spot severity - August 29, 212 UTC Lun T. Alone Bond (4 fl oz) Syl-Tc (4 fl oz) MSO (.5 % NIS (.5 % Wetcit (.375 % Applictions: July 7 July 17 July 27 August Applictions: July 7 July 17 July 27 August 8 Effect of Adjuvnt Mixed with 8 fl oz of Lun Trnquility Plnt Vigor August 29, 212 UTC Lun T. Alone Bond (4 fl oz) Syl-Tc (4 fl oz) MSO (.5 % NIS (.5 % Wetcit (.375 % 5

6 Effect of Adjuvnt Mixed with 8 fl oz of Lun Trnquility Stem WhiteMold Incidence - Septemer 5, 212 How do you void fungicide resistnce? c UTC Lun T. Alone Bond (4 fl oz) Syl-Tc (4 fl oz) MSO (.5 % c Applictions: July 7 July 17 July 27 August 8 c c c NIS (.5 % Wetcit (.375 % 1. Reduce the use of the fungicide in question. 2. Diversify fungicide tretments. 3. Use mixture of fungicides. 4. Apply fungicides t the recommended rte. Scenrio 1 Scenrio 1 1. Mixed pthogen popultion (lrgely susceptile to fungicide). 2. Fungicide ppliction is mde. Scenrio 1 Scenrio 1 3. Pthogens sensitive to the fungicide die. 4. Pthogens resistnt to fungicide predominntly survive. 6

7 Scenrio 1 Scenrio 1 5. Pthogens reproduce. 6. Another fungicide ppliction (sme mode of ction). Scenrio 1 Scenrio 1 7. Only sensitive pthogens re killed. 8. Little, if ny, enefit is gined from the 2 nd ppliction. Scenrio 2 Scenrio 2 1. Mixed pthogen popultion (lrgely susceptile to fungicide). 2. Fungicide ppliction is mde. 7

8 Scenrio 2 Scenrio 2 3. Pthogens sensitive to the fungicide die. 4. Pthogens resistnt to fungicide predominntly survive. Scenrio 2 Scenrio 2 5. Pthogens reproduce. 6. Another fungicide ppliction (different mode of ction). Scenrio 2 Scenrio 2 7. Pthogens resistnt to fungicide 1 re killed y fungicide Significnt enefit is gined from the 2 nd ppliction. 8

9 Summry Mny effective fungicides ville. Some hve dul ctivity ginst white mold or lte light. Use premium products erly in the seson. A ck to ck ppliction of one mode of ction my e most effective. Then rotte to nother chemistry. Use of metconzole cn improve yield (eyond disese control). Use of djuvnts cn improve product performnce. Tnk mix premium products with protectnt. Rotte products with different modes of ction. 9