1. Updates on Management of Stone Fruit Diseases
Mohammad Babadoost
University of Illinois
7-8 February 2017

2. Management of Stone Fruit Disease ____________________________________
New chemicals
Bacterial spot - peach
Brown rot – all stone fruit
Wound and canker - peach
Babadoost

3. Management of Stone Fruit Disease ____________________________________
New chemicals –
Fruits & Vegetables
Babadoost

4. New Fungicides for Fruit & Vegetables
Common Name
Trade Name
Crop
Diseases
Benzovindiflupyr [FRAC Code: 7]
Aprovia
Blueberries
Leaf rust, Septoria leaf spot
Grape
Alternaria rot, angular leaf spot, anthracnose, black rot, Phomopsis cane and leaf spot, powdery mildew
Pome fruit
Alternaria blotch, cedar-apple rust, quince rust, Scab, sooty blotch/flyspeck, fruit rots,
Difenoconazole + Benzovindiflupyr [FRAC Code: 3 + 7]
Aprovia Top
Cucurbits
Several fungal diseases
Fruiting vegetables
Peas & beans
Tuberous vegetables

5. New Fungicides for Fruit & Vegetables
Common Name
Trade Name
Crop
Diseases
Azoxystrobin + Benzovindiflupyr [FRAC Code: ]
Elatus
Potato
Black dot, Rhizoctonia canker, silver scurf
Sweet corn
Several fungal diseases (rust, blight, gray leaf spot, …
Oxathiapiprolin [FRAC Code: U15]
Orondis Gold 200
Cucurbits
Phytophthora blight (Phytophthora capsici)
Fruiting vegetables
Leafy vegetables
Downy mildew
Mefenoxam [FRAC Code: 4]
Orondis Gold B
Damping-off (Pythium spp.)
Damping-off and Phytophthora diseases

6. New Fungicides for Fruit & Vegetables
Common Name
Trade Name
Crop
Diseases
Oxathiapiprolin [FRAC Code: U15]
Orondis Opti A
Brassicas
Downy mildew
Bulb veget.
Cucurbits
Downy mildew and Phytophthora blight
Fruiting vegetables
Downy mildew and Phytophthora diseases
Ginseng
Phytophthora root rot
Potato
Late blight
Chlorothalonil [FRAC Code: M5]
Orondis Opti B
Alternaria and downy mildew
Several fungal diseases
Several fungal disease
Fruiting veg.
Alternaria and gray mold
Orondis Opti A and Orondis Opti B should be mixed

7. New Fungicides for Fruit & Vegetables
Common Name
Trade Name
Crop
Diseases
Oxathiapiprolin [FRAC Code: U15]
Orondis Ultra A
Brassicas
Downy mildew
Bulb veget.
Cucurbits
Downy mil. & Phytophthora
Fruiting vegetables
Downy mildew and Phytophthora diseases
Ginseng
Phytophthora root rot
Leafy veget.
Potato
Late blight
Mandipropamid [FRAC Code: 40]
Orondis Ultra B
Fruiting veg.
Downy mild. & Phytophthora
Orondis Ultra A and Orondis Ultra B should be mixed

8. New Fungicides for Fruit & Vegetables
Common Name
Trade Name
Crop
Diseases
Polyoxin [FRAC Code: 19]
OSO SC
Brassicas
Several fungal diseases
Bulb veget.
Carrot
Citrus
Cucurbits
Fruiting veg.
Grape
Gray mold, powdery mildew
Leafy veget.
Legumes
Pome fruit
Scab, powdery mildew
Potato
Early & late blights, white mol.
Stone fruit
Botrytis, powdery mildew
Isofetamid [FRAC Code: 7]
Kenja 400SC
Botrytis bunch rot
Lettuce
Sclerotinis drop

9. New Fungicides for Fruit & Vegetables
Common Name
Trade Name
Crop
Diseases
Fluopyram [FRAC Code: 7]
Luna Privileg
Artichoke
Several fungal diseases
Blueberry
Brassicas
Carrot
Cherry
Brown rot, cherry leaf spot, powdery mildew, scab,
Dill
Citrus
Fungal diseases
Pome Fruits
Scab, powdery mildew, sooty blotch/flyspeck
Grape
Ginseng
Herbs
Gray mold, powdery mildew
Leafy green
Legumes

10. New Fungicides for Fruit & Vegetables
Common Name
Trade Name
Crop
Diseases
Fluopyram [FRAC Code: 7]
Continues
Luna Privileg
Cucurbits
Several fungal diseases
Bulb veget.
Tomato
Root veget.
Fluopyram + Tebuconazole [FRAC Code: 7 + 3]
Luna Experi-ence
Almond
Pecan
Pistachio
Grape
Watermelon
Gray mold, powdery mildew
Fluopyram + Trifloxystrobin [FRAC Code: ]
Luna Sensat-ion
Apple
Scab, powdery mildew, rust, sooty blotch/flyspeck, fruit rot
Cherry

11. New Fungicides for Fruit & Vegetables
Common Name
Trade Name
Crop
Diseases
Azoxystrobin [FRAC Code: 11]
Aframe
Almond
Several fungal diseases
Artichoke
Ramularia leaf spot
Asparagus
Purple spot
Blueberry
Brassicas
Bulb veget.
Carrot
Celery
Citrus
Cucurbits
Fruiting veg.
Gray mold, powdery mildew
Grape
Herbs
Leafy veget.

12. New Fungicides for Fruit & Vegetables
Common Name
Trade Name
Crop
Diseases
Azoxystrobin [FRAC Code: 11]
Continues
Aframe
Legumes
Several fungal diseases
Pecans
Anthracnose, scab
Potato
Stone Fruits
Brown rot, scab, powdery mildew, shot hole
Tomato
Tree nuts
Root/Tub ve
Azoxystrobin + propiconazole [FRAC Code: ]
Aframe Plus
Beans
Berries
Bulb veget.
Celery
Early blight, late blight
Strawberry

13. New Fungicides for Fruit & Vegetables
Common Name
Trade Name
Crop
Diseases
Bacillus mycoides, isolate J [Biocontrol agent]
LifeGard WG
Almond
Alternaria disease
Citrus
Citrus canker
Brassicas
Downy mildew
Cucurbits
Anthracnose, downy mildew, gummy stem, powdery mild.
Fruiting vegetable
Bacterial spot & speck, early blight, gray mold, late blight
Grape
Lettuce
Downy mildew, powdery mild.
Legumes
White mold
Pecan
Pecan scab
Pone fruit
Fire blight
Potato
Early & late blights, white mol.
Spinach
Downy mildew, leaf spot
LifeGard can be used in organic production

14. Bacterial Spot of Peaches _____________________________________
An annual disease in Illinois
Pathogen: Xanthomonas arboricola pv. pruni
Pathogen survival: in buds, ankers, cracks in barks, and leaf scars
Disease development is favored by: moist and warm conditions. Higher disease severity in sandy soil.
Babadoost

15. Peach bacterial spot in Illinois in 2016
Babadoost

16. Bacterial spot on peach fruits
Babadoost

17. Disease cycle of peach bacterial spot

18. Management of Bacterial Spot _____________________________________
Plant resistant/tolerant cultivars
Nutrient stress: higher disease severity
Sandy soil: prevent sand blowing
Chemical use: copper, oxytentracycline
Babadoost

19. Applications of Copper Sprays
lb Cu/A
lb Cu/A
1.0 lb Cu/A
Early bud-break
Pink-bud
Blossoms opening

20. Applications of Copper and Mycoshield
0.50 lb Cu/A
lb Cu/A (+ Mycoshield)
Petal-fall
Shuck-split/Shuck-off
Copper phytotoxicity may begin to occur

21. Bacterial Spot of Peaches _____________________________________
Registered chemicals
FireLine (oxytetracycline hydrochloride; FRAC: 41)
Mycoshield (oxytetracycline Calcium complex; FRAC: 41)
Babadoost

22. Important Stone Fruit Diseases ______________________________________
Brown rot of peach: Fungus Monilinia fructicola
Babadoost

23. Brown rot of peach in Illinois
Babadoost 23

24. Characteristics of Brown Rot ______________________________________
Major symptoms:
Blossom blight and spur blight
Fruit rot
Inoculum sources: mummies, twig canker
Babadoost

25. Blossom infection by Monilinia fructicola

26. Peach brown rot and mummies
Babadoost

27. Life Cycle of peach brown rot

28. Overwintering of Monilinia fructicola

29. Managing Peach Brown Rot Cultural practices
_________________________________________________
Cultural practices
Remove mommies
Prune blighted twigs
Disk the ground in spring to prevent spore production
Remove wild and neglected stone fruit trees
Babadoost

30. Managing Peach Brown Rot Fungicide applications
_________________________________________________
Fungicide applications
From pink bud until petal fall blossom blight (blossom and shoot blight)
Prior to harvest fruit rot (brown rot)
Babadoost

31. Fungicide Efficacy for Peach Brown Rot
Brown R. Bloom
Brown R. Fruit
Adament E
Pristine G
Bravo
---
Procure*
Captan
F-G
Rally*
Captevate
Rovral
Elevate
Quash
Fontelis
Scala
Indar*
Sulfur F P
Inspir Super
Syllit*
Luna Sensa.
Topguard
Merivan
Topsin-M*
Orbit*
Vangard
P = poor; F = fair; G = good; E = excellent; --- = unknown * = resistance reported.

32. Other Peach Problems
Babadoost

33. Powdery mildew of peach

34. Wounds and canker of peach

35. A peach orchard with sandy ground

36. Questions/Comments