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Table 34. Highbush Blueberry Pest Management Table

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Table 34. Highbush blueberry pest management table†.

For resistance management do not make more than 2 sequential applications of fungicides in the same FRAC group or insecticides in the same IRAC group. See product labels or RAC GROUP column in this table for groups.
Pest

RAC
Group♦

Spray Material, Rate/A
(pre harvest interval PHI)
Cultural Practices and
Scouting Notes
Comments
Dormant and Delayed Dormant
Scale Insects
Blueberry Spanworm
Winter Moth
IRAC
UN
UN
 
3
3
18
5
7C
1B
5
 
Superior oil, 2-2.5% (0) OR
JMS Stylet Oil, 3-6 qt/100 (0)
plus one of the following:
*Asana XL, 4.8-9.6 oz (14)
*Brigade WSB, 5.3-16 oz (1)
Confirm 2F, 16 oz (14)
Delegate WG, 3-6 oz (3)
Esteem 35WP, 5 oz (7)
Imidan 70W, 1 1/3 lb (3)
Entrust, 1.25-2 oz (3)
Prune out old, weakened canes.
 
Treat during dormancy using 250-300 gallons of spray (300-400 psi) per acre to ensure thorough coverage.
Apply oil only when no danger of freezing temperatures within 24 hours.
Mummyberry
 
 
Bury over-wintering mummies by cultivation or applying 3-4" mulch before mushroom cups (apothecia) appear.
'Burlington', 'Collins', 'Jersey', 'Darrow', 'Rubel', and 'Bluetta' appear somewhat resistant; 'Earliblue' and 'Blueray' appear more susceptible to mummyberry.
Botrytis blossom and twig blight
FRAC
M4
17, M4
3
M3
UN
UN
44
 
Captan 50WP, 5 lb (0)
CaptEvate 68WDG, 3.5-4.7 lb (0)
Quash, 2.5 oz (7)
Ziram 76DF, 3 lb (21)
Actinovate AG, 3-12 oz (0)
Oxidate, 40-128 oz (0)
Serenade Max, 1-3 lb (0)
Avoid high rates of nitrogen fertilizer which tends to promote growth that is more susceptible to infection.
Quash has a supplemental label for this use and applicator must have copy of this label when applying.
 
Phomopsis canker
Fusicoccom canker
FRAC
M1
M1
M2
3
M3
M1
M1
 
 
Cuprofix Ultra, 2-4 lb (0)
Kocide 101, 3-5lbs/A (0)
Lime Sulfur, 5 gal (0)
Quash, 2.5 oz (7)
Ziram 76DF, 1.5 lb (21)
Badge SC, 2-4 pts (0)
Badge X2, 1-2.25 lb (0)
 
Prune out and destroy affected canes.
'Weymouth', 'Berkeley', and 'Earliblue' are very susceptible to Fusicoccum.
Use Lime Sulfur only once in Spring. May be used again in autumn where Phomopsis is a problem.
Do not use Lime Sulfur within 14 days of an oil spray or when temperatures are above 75˚F.
Avoid practices such as late season fertilization that makes bushes more vulnerable to winter injury. Winter-injured bushes are more susceptible to Phomopsis and Fusicoccum infections.
Phytophthora root rot
FRAC
4
 
 
 
 
 
33
33
33
 
Ridomil Gold SL (45)
New Plantings, 3.6 pt broadcast
at or before time of planting
(repeat once)
Established Plantings, 1/4 pt/1000 ft
of row, (repeat once)
Aliette WDG, 5 lb (0.5)
Phostrol, 2.5-5 pt (0)
ProPhyt, 4 pt (0)
  • Do not plant blueberries on wet soils.
  • If wet site is unavoidable, install drainage tile and plant blueberries on raised beds.
  • Phytophthora damage symptoms may mimic nutritional deficiency symptoms.
Ridomil Gold: Apply only as an emergency use, not as a routine or preventative treatment.
Apply in spring before growth begins in established plantings. In new plantings, apply at or just after planting.
In new plantings, do not exceed 3.6 gallons/A within 12 months of harvest or illegal residues may result. Read the label.
Aliette: Apply as a 5 ft. band. Do not tank mix Aliette with copper compounds or apply to foliage with copper residues or phytotoxicity may occur. See label for other restrictions
Phostrol: Begin foliar sprays at approximately the pink bud stage, and continue on a 14-21 day interval.
Bud-break (aka Bud Swell, Green tip) through pre-bloom
Blueberry Spanworm
Gypsy Moth
Winter Moth
IRAC
18
3,4A
18
3,4A
11
11
11
UN
UN
Insecticides listed at dormant plus:
Confirm 2F, 16 oz (14)
* Hero, 4-10.3 oz (1)
Intrepid 2F, 16 oz (7)
* Triple Crown, 4.5-10.3 oz (3)
Agree WG, .5-2 lb (0)
Deliver, .25 - 1.5 lb (0)
Dipel DF, 0.5-2 lb (0)
Grandevo DF, 1-3 lb (0)
Venerate XC, 1-8 qt (0)
 
Confirm and Intrepid are most effective against young larval stages.

Dipel and Agree must be ingested to be effective.
Use Grandevo when pest populations are low and/or in young growth stage.
Blueberry Blossom Weevil
Cranberry Weevil
IRAC
3
 
*Asana XL, 4.8-9.6oz (14)
Disking between rows and raking/hoeing under plants helpful.
Eradication of wild blueberries in the vicinity of the blueberry planting is advised.
Mummy Berry
FRAC
11
M5
M4
M4
17, M4
3
29
3
7, 11
3
3
3
3, 11
9, 12
19
UN
44
44
UN
UN
 
Abound F, 6.0-15.5 oz (0)
Bravo Ultrex, 2.7-3.6 lb (42)
Captan 80 WDG, 1.25-3.1 lb (0)
Captec 4L, 0.75-1 qt (0)
Captevate 68 WDG, 4.7 lb (0)
Indar 75 WSP, 2 oz (30)
Omega 500F, 1.25 pts (30)
Orbit, Tilt, 6 oz (30)
Pristine, 18.5-23 oz (0)
Proline 480 SC, 5.7 oz (7)
PropiMax EC, 6 oz (30)
Quash, 2.5 oz (7)
Quilt Excel, 14-21 fl oz (30)
Switch, 11-14 oz (0)
Tavano 5% SC, 3.75-13 fl oz (0)
Actinovate AG, 3-12 oz (0)
Double Nickel 55, .25-3 lb (0)
Double Nickel LC, .5-6 qt (0)
Regalia, 1-4 qt (0)
Serenade Max, 1-3 lb (0)
Before mummy cups appear (mid-March), disk between rows and rake, sweep, and hoe under plants or cover with 3-4” of mulch.
As first mummy cups appear, apply 200 lbs of 50% Urea prills.
Cultivation and Urea are most effective when both are used.
Abound should be used with extreme caution to avoid phytotoxicity to apples. See label for further information.
Use of propiconazole for mummy berry control has been associated with an increase in Botrytis severity.
 
Tank mix Regalia with other registered fungicides.
 
Double Nickel for mummy berry suppression only
Early to mid-bloom
Mummy Berry
 
Same as bud-break through pre-bloom
Scout field for mummyberry strikes to determine risk level for secondary infections.
Fungicide applications are especially important following frost/freeze events during bloom.
Botrytis blossom and twig blight
Anthracnose
Phomopsis twig blight
FRAC
M4
17, M4
17
29
7, 11
3
3
3, 11
NC
9, 12
19
M3
UN
M
44
44
UN
 
Captan 50WP, 5 lb (0)
Captevate 68 WDG, 3.5-4.7 lb (0)
Elevate 50WDG, 1.5 lb (0)
Omega 500F, 1.25 pt (30)
Pristine WG, 18.5-23 oz (0)
Proline 480 SC, 5.7 oz (7)
Quash, 2.5 oz (7)
Quilt Excel, 14-21 fl oz (30)
Rendition, 48 oz (0)
Switch, 11-14 oz (0)
Tavano 5% SC, 3.75-13 fl oz (0)
Ziram 76DF, 3 lb (21)
Actinovate AG, 3-12 oz (0)
Cueva, .5-2 gal (0)
Double Nickel 55, .25-3 lb (0)
Double Nickel LC, .5-6 qt (0)
Serenade Max, 1-3 lb (0)
 
Many mummy berry materials also labeled for these diseases.
Use Captevate at the highest rate (4.7 lb) for anthracnose. Captevate NOT labeled for Phomopsis.
Be aware of pre-harvest interval restrictions for this application.
Apply Cueva at start of flowering and every 7-10 days through bloom. Do not reapply within 7 days.
Rendition is hydrogen peroxide plus peroxyacetic acid. Apply during bloom when weather conditions favor disease development.
Blueberry Leaf Rust
FRAC
3
3
3
3
UN
 
Orbit, Tilt, 6 oz (30)
Proline 480 SC, 5.7 oz (7)
PropiMax EC, 6 oz (30)
Quash, 2.5 oz (7)
JMS Stylet Oil, 3-6 qt/100 (0)
Remove alternate host (Hemlock) from within 1/4 mile if possible, especially those upwind of blueberry planting.
Plant resistant cultivars such as 'Bluecrop', 'Burlington', 'Collins', 'Dixi', 'Earliblue', 'Ivanhoe', 'Stanley', or 'Weymouth' if possible.
Powdery Mildew
FRAC
3
M2
3
3
3
UN
UN
M2
UN
UN
18B
 
Indar 75 WSP, 2 oz (30)
Microthiol Disperss, 6-15 lb (0)
Orbit, Tilt, 6 oz (30)
PropiMax EC, 6 oz (30)
Quash, 2.5 oz (7)
Actinovate AG, 3-12 oz (0)
JMS Stylet Oil, 3 qts (0)
Kumulus DF, 6-15 lb (0)
Oxidate, 40-128 oz (0)
Milstop 2.5-5 lb (0)
Trilogy, 1-2% sol (0)
Prune for good drying conditions.
Plant resistant cultivars when possible.
Do not use sulfur products and oil products within 2 weeks of each other.
Petal Fall (remove honey bees before spraying)
Cranberry fruitworm
Cherry fruitworm
IRAC
3
4A
22A
3
18
5
7C
28
3,4A
1B
18
1A
1B
18B
3A
1A
3,4A
11
11
11
11
5
UN
UN
 
*Asana XL, 4.8-9.6 0z (14)
Assail 30 SG 4.5-5.3 oz (1)
Avaunt 3.5-6 oz, (7)
*Brigade WSB, 5.3-16 oz (1)
Confirm 2F, 16 oz (14)
Delegate WG, 3-6 oz (3)
Esteem 35WP, 5 oz (7)
Exirel, 10-13.5 fl oz (3)
*Hero, 40-10.3 oz (1)
Imidan 70W, 1 1/3 lb (3)
Intrepid 2F, 10-16 oz (?)
*Lannate 90, 0.5 - 1 lb (3)
Malathion 5E, 1.5 pt (1)
Molt-X, 8 oz (0)
Pyrenone .5EC, 2-12 oz (0)
Sevin XLR, 1.5-2 qts (7)
* Triple Crown, 4.5-10.3 oz (3)
Agree WG, .5-2 lb (0)
Biobit 1.6 FC 1-2 pt (0)
Deliver, 0.25-1.5 lbs (0)
DiPel DF, 1-2 lb (0)
Entrust, 1.25-2 oz (3)
Grandevo, 1-3 lb (0)
Venerate XC,1-8 qt (0)
Disking between rows and raking and hoeing under plants is helpful for fruitworm management.
In small plantings remove and destroy infested fruit (which can be identified because it turns prematurely blue)
Fruitworms are active for about five weeks and they cannot be controlled with only one post-pollination spray.
Agree, Biobit and DiPel are bacterial biological insecticides containing Bacillus thuringiensis and must be ingested to be effective. Apply when newly hatched larvae (1st or 2nd instar) begin feeding. Larvae cease feeding in hours and die in 2-5 days.
White grubs
IRAC
4A
 
Admire Pro, 7-14 oz soil (7)
Apply through low pressure irrigation or as a band treatment followed by rainfall or irrigation. Do not exceed 0.5 lb active ingredient per acre per year. The most effective timing is between June 1 and July 15.
Thrips
IRAC
4A
5
3A
5
UN
 
Assail 30 SG 4.5-5.3 oz (1)
Delegate WG, 3-6 oz (3)
Azera, 1-3.5 pt (0)
Entrust, 1.25-2 oz (3)
Grandevo DF, 1-3 lb (0)
 
Use Grandevo when pest populations are low and/or in young growth stage.
Aphids
IRAC
4A
UN
28
3,4A
3,4A
3A
UN
UN
UN
18B
18B
 
Actara, 3-4 oz (3)
Captiva, 1-2 pt (0)
Exirel, 13.5-20.5 fl oz (3)
* Hero, 4-10.3 oz (1)
* Triple Crown, 4.5-10.3 oz (3)
Azera, 1-3.5 pt (0)
Des-X, 2% sol. (0)
Grandevo DF, 1-3 lb (0)
M-Pede, 1-2% sol. (0)
Neemix, .25-1 pt (0)
Trilogy, 1-2% sol (0)
 
Aphids can vector the phytoplasma that causes Blueberry Scorch disease and so should be controlled in blueberry plantings.
Use Captiva to repell or suppress aphids.
Anthracnose
 
Same as early-mid bloom
 
 
Powdery Mildew
 
Same as early-mid bloom
 
 
First cover (about 10 days after Petal Fall; some berries begin to color)
Cranberry fruitworm
Cherry fruitworm
 
Same as petal fall
 
Apply 7 to 12 days after petal fall
Blueberry maggot
IRAC
3
4A
3
3
28
3,4A
1B
1A
1B
3A
1A
3,4A
18B
UN
UN
 
*Asana XL, 9.6 oz (14)
Assail 30 SG 4.5-5.3 oz (1)
*Brigade WSB, 5.3-16 oz (1)
*Danitol 2.4EC, 10.6 oz (3)
Exirel, 13.5-20.5 oz (3)
* Hero 4-10.3 oz (1)
Imidan 70 W, 1 1/3 lb (3)
*Lannate SP, 0.25-0.5 lb (3)
Malathion 5EC, 1 pt/A (1)
Pyrenone 0.5EC, 2-12 oz (0)
Sevin 4F, 1.5-2 pt (7)
* Triple Crown, 4.5-10.3 oz (3)
Aza-Direct, 1-3.5 pts (0)
GR-120 Naturalyte Bait, 10-20 oz (1)
Surround WP, 12.5-50 lb (0)
Use sticky traps (red/green spheres or yellow rectangles; See source listing in appendix) to monitor population and activity.
Apply insecticide 7-10 days after first trap catch.
Check traps twice each week.
Apply sprays when berries begin to turn blue or when flies begin to lay eggs, usually late June. Repeat every 10 days through harvest.
Be aware of pre-harvest intervals and other restrictions with repeated sprays.
Malathion should be used with 1.5 qt Staley’s Sauce Base No. 7 (NuLure).
Brown marmorated stink bug
(BMSB)
IRAC
4A
3
3
3
3,4A
1A
1B
3
3,4A
UN
 
Admire Pro, 2.1-2.8 oz (3)
*Bifenture 10DF, 5.3-16.0 oz (1)
*Brigade WSB, 5.3-16.0 oz (1)
*Danitol 2.4EC, 10.6 oz (3)
* Hero, 4-10.3 oz (1)
*Lannate 90, 0.5 - 1 lb (3)
Malathion 5E, 2.5-3 pt (1)
*Mustang Max 4.0 oz (1)
* Triple Crown, 4.5-10.3 oz (3)
Surround WP, 12.5-50 lb (0)
 
As of 2014, brown marmorated stink bugs have been found in all New England states but have not become an agricultural problem yet.
Aphids
 
Same as petal fall
 
 
Anthracnose
 
Same as petal fall
 
 
Powdery Mildew
 
Same as petal fall
 
 
Spotted wing Drosophila
(SWD)
IRAC
4A
3
3
3
3
5
28
3,4A
1B
1A
3
3,4A
5
UN
 
Assail 30 SG 4.0-6.9 oz (1)
*Asana XL, 4.8-9.6 0z (14)
*Bifenture 10DF, 5.3-16.0 oz (1)
*Brigade WSB, 5.3-16.0 oz (1)
*Danitol 2.4EC, 10.6 oz (3)
Delegate WG, 3-6 oz (3)
Exirel, 13.5-20.5 (3)
* Hero, 4-10.3 oz (1)
Imidan 70 W, 1 1/3 lb (3)
*Lannate 90, 0.5 - 1 lb (3)
*Mustang Max, 4.0 oz (1)
* Triple Crown, 6.4-10.3 oz (3)
Entrust, 1.25-2 oz (3)
Grandevo DF, 1-3 lb (0)
Use traps baited with apple cider vinegar plus ethanol alcohol (90% apple cider vinegar plus 10% ethanol) and/or fermenting yeast to monitor population.
Spray once SWD adults are captured and fruit begins to turn color.
Grandevo for SWD suppression only
Second and additional covers (10 days from previous cover, repeat as needed)
Blueberry maggot   Same as first cover above See comments above for Blueberry maggot
Brown marmorated stink bug   Same as first cover above  
Japanese Beetle and other scarab beetles
IRAC
4A
4A
3
4A
3
3,4A
1B
3A
1A
3,4A
18B
UN
 
Actara, 3-4 oz (3)
Admire Pro, 2.1-2.8 oz (3)
*Asana XL, 4.8-9.6 oz (14)
Assail 30 SG 4.5-5.3 oz (1)
*Danitol 2.4EC, 10.6 oz (3)
* Hero, 4-10.3 oz (1)
Imidan 70W 1.3 lbs (3)
Pyrenone 0.5EC, 2-12 oz (0)
Sevin XLR Plus, 1-2 qt (7)
* Triple Crown, 4.5-10.3 oz (3)
Aza-Direct, 1-3.5 pts (0)
Surround WP, 12.5-50 lb (0)
Traps are not recommended as they tend to draw more beetles to the area than they remove.
Bushes can withstand significant feeding injury without yield impact but fruit contamination with feces may be unacceptable, especially for packout.
Admire Pro rate is for foliar applied; see label for soil applied rate
The use of Sevin may result in the build up of aphids due to the elimination of natural predators.
Surround labeled for suppression only.
Aza-Direct acts as a feeding repellent and requires frequent reapplication.
Blueberry
Leafrollers
IRAC
3
18
3,4A
1B
18B
3
3,4A
5
11
UN
 
*Brigade WSB, 5.3-16.0 oz (1)
Confirm 2F, 16 oz (14)
* Hero, 4-10.3 oz (1)
Imidan 70W 1.3 lbs (3)
Molt-X, 8 oz (0)
*Mustang 4.3 oz (1)
* Triple Crown, 4.5-10.3 oz (3)
Entrust SC, 4-6 oz (3)
Javelin WG, 0.25-1 oz (0)
Surround WP, 25-50 lb (0)
Pheromone traps can be used to time applications.  Threshold is 1 larvae per 100 leaf shoots.
 
Anthracnose
 
Same as First Cover above
 
See Captan comments in Petal Fall Section.
Powdery Mildew
 
Same as First Cover above
 
 
Spotted wing drosophila
 
Same as First Cover above
 
 
Post-harvest
Sharp-nosed leafhopper
IRAC
4A
3
3
3
3,4A
1A
1B
1A
3,4A
 
Actara, 3-4 oz (3)
*Asana XL, 4.8-9.6 oz (14)
*Bifenture 10DF, 5.3-16.0 oz (1)
*Brigade WSB, 5.3-16 oz (1)
* Hero, 4-10.3 oz (1)
*Lannate LV, 1.5 pt (3)
Malathion 5E, 2.5-3 pt (1)
Sevin XLR Plus, 1-2 qt (7)
* Triple Crown, 4.5-10.3 oz (3)
Rogue out plants affected with blueberry stunt.
Monitor insects with yellow sticky traps and control when found.
Each of these sprays will control sharp-nosed leafhopper, the only known carrier of the blueberry stunt mycoplasma.
Powdery Mildew
 
Same as Second Cover above
Plant resistant cultivars when possible.
Plant and prune for good air circulation and drying conditions.
Do not use sulfur products and oil products within 2 weeks of each other.
Phomopsis twig blight
FRAC
M2
 
Lime Sulfur, 5 gal (0)
 
Apply in late October or when 2/3 of leaves drop on Weymouth and Berkeley.
Where brand names for chemicals are used, it is for the reader’s information. No endorsement is implied, nor is discrimination intended against products with similar ingredients. Please consult pesticide product labels for rates, application instructions and safety precautions. Users of these products assume all associated risks.
Resistance Action Committee Grouping; IRAC=Insecticide Resistance Group, FRAC=Fungicide Resistance Group
*Restricted use pesticide; pesticide applicators license required. OMRI listed for organic production. (UN) unknown mode of action.
For resistance management do not make more than 2 sequential applications of fungicides in the same FRAC group or insecticides in the same IRAC group. See product labels or RAC column in this table for groups.