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3.1 Introduction

Numerous pests affect blueberries, although the pest complex is much narrower than with many other fruit crops. For photographs of these pests and for detailed information on blueberry culture, obtain a copy of the Highbush Blueberry Production Guide (NRAES-55) from your Cornell Cooperative Extension Office or order on line at: http://www.nraes.org/.

For assistance with diagnosing blueberry problems, use the Berry Diagnostic Tool at http://www. hort.cornell.edu/diagnostic or contact your Cornell Cooperative Extension Office for assistance. To submit samples for disease diagnosis, contact Plant Disease Clinic, Cornell University, Department of Plant Pathology, 334 Plant Science Building, Ithaca, NY 14853-4203, (607) 255-7850, http://plantclinic.cornell.edu.

To submit samples for insect diagnosis or for phone consultations, contact Insect Diagnostic Laboratory, Cornell University, Department of Entomology, 4140 Comstock Hall, Ithaca, NY 14853-2601, (607) 255-3250, http://www.entomology.cornell. edu/Extension/DiagnosticLab.

The following information is provided for management of blueberry pests. If a pesticide is used, it must be registered with the state and federal governments. Use Table 3.2.1 to determine legal pesticides, their brand names, and any restrictions that may apply. Unless otherwise noted, use 100 gal water per acre. Always read the label before applying any pesticide.

Table 3.1.1. Blueberry pests and the associated stage of plant development.
Dormant	Insect stem gall, Botrytis blossom and twig blight Cankers (Fusicoccum and Phomopsis) Scale insects	3.2.1.1 3.2.1.2 3.2.1.3 and 3.2.1.4 3.2.1.5
Green tip	Mummyberry Botrytis blossom and twig blight Phomopsis canker	3.2.2.1 3.2.2.2 3.2.2.3
Pink bud	Mummyberry Botrytis blossom and twig blight	3.2.3.1 3.2.3.2
Bloom	Mummyberry Botrytis blossom and twig blight Anthracnose fruit rot/blossom blight Blueberry leaf rust Powdery mildew	3.2.4.1 3.2.4.2 3.2.4.3 3.2.4.4 3.2.4.5
Petal fall/Post bloom	Cranberry fruitworm Cherry fruitworm Leafrollers Blueberry tip borer Plum curculio	3.2.5.1 3.2.5.2 3.2.5.3 3.2.5.4 3.2.5.5
Summer preharvest	Blueberry maggot Japanese beetle Anthracnose fruit rot Blueberry stem borer	3.2.7.1 3.2.7.2 3.2.7.3 3.2.7.4
Special pests	Witches’ broom Crown gall Blueberry viruses Ants	3.2.8.1 3.2.8.2 3.2.8.3 3.2.8.4

Table 3.1.1. Blueberry pests and the associated stage of plant development.

Stage of development

Scout for:

See section:

Dormant

Insect stem gall,

Botrytis blossom and twig blight

Cankers (Fusicoccum and Phomopsis)

Scale insects

3.2.1.1

3.2.1.2

3.2.1.3 and 3.2.1.4

3.2.1.5

Green tip

Mummyberry

Botrytis blossom and twig blight

Phomopsis canker

3.2.2.1

3.2.2.2

3.2.2.3

Pink bud

Mummyberry

Botrytis blossom and twig blight

3.2.3.1

3.2.3.2

Bloom

Mummyberry

Botrytis blossom and twig blight

Anthracnose fruit rot/blossom blight

Blueberry leaf rust

Powdery mildew

3.2.4.1

3.2.4.2

3.2.4.3

3.2.4.4

3.2.4.5

Petal fall/Post bloom

Cranberry fruitworm

Cherry fruitworm

Leafrollers

Blueberry tip borer

Plum curculio

3.2.5.1

3.2.5.2

3.2.5.3

3.2.5.4

3.2.5.5

Summer preharvest

Blueberry maggot

Japanese beetle

Anthracnose fruit rot

Blueberry stem borer

3.2.7.1

3.2.7.2

3.2.7.3

3.2.7.4

Special pests

Witches’ broom

Crown gall

Blueberry viruses

Ants

3.2.8.1

3.2.8.2

3.2.8.3

3.2.8.4

Table 3.1.2. Chemical and brand names of labeled products for blueberries.
(DTH = days to harvest; REI= Restricted Entry Interval; OMRI =materials approved by Organic Materials Review Institute)
Chemical Name	Brand Name/Formulation	EPA Reg. Number	Restrictions
*INSECT AND MITE MANAGEMENT PRODUCTS*
acetamiprid	Assail 30SG	8033-36	DTH = 1, REI = 12 hr
*azinphos-methyl	*Guthion 50WP	264-733	DTH = 7, REI = 7 days
Bacillus thuringiensis (B.t.)	Javelin WG OMRI	70051-66	DTH = 0, REI = 4 hr
	Deliver OMRI	70051-69
	Dipel DF OMRI	73049-39
carbaryl	Sevin 4F	264-349	DTH = 7, REI = 12 hr
	Sevin XLR	264-333
	Drexel Carbaryl 4L	19713-49	DTH = 7, REI = 12 hr
	Carbaryl 4L	34704-447	DTH = 7. REI = 12 hr
*fenpropathrin	*Danitol 2.4 EC	59639-35	DTH = 3, REI = 24hr
*imidacloprid	*Admire 2F	264-758	DTH = 7, REI = 12 hr
	*Admire Pro	264-827	DTH = 7, REI = 12 hr
	*Alias 2F	264-758-66222	DTH = 7, REI = 12 hr
	*Provado 1.6F	264-763	DTH = 3, REI = 12 hr
malathion	Malathion 57EC	34704-108	DTH = 1, REI = 12 hr
	Malathion 5EC	66330-220	DTH = 1, REI = 12 hr
neem extract/derivatives	Trilogy OMRI	70051-2	DTH = -, REI = 4 hr
*phosmet	*Imidan 70W	10163-169	DTH = 3, REI = 24 hr
pyrethrin¹	Pyrenone Crop Spray 0.5EC	432-1033	DTH = 0, REI = 12 hr
	PyGanic 1.4 EC_IIOMRI	1021-1771	DTH = 0, REI = 12 hr
	PyGanic 5.0 EC_IIOMRI	1021-1772	REI = 12 hr
pyriproxyfen	Esteem 35WP	59639-115	DTH = 7, REI = 12 hr
	Esteem Ant Bait	59639-114	DTH = 24; REI = 12 hr
spinetoram	Delegate WG	62719-541	DTH = 3; REI = 4 hr
spinosad	Entrust Naturalyte OMRI	62719-282	DTH = 3, REI = 4 hr
	GF-120 NF Naturalyte Fruit Fly Bait OMRI	62719-498	REI = 4 hr
†tebufenoxzide*	*†Conﬁrm 2F	62719-420	DTH = 14, REI = 4
*DISEASE MANAGEMENT PRODUCTS*
azoxystrobin	Abound 2.08F	100-1098	DTH = 0, REI = 4 hr
Bacillus pumilus strain QST 2808	Sonata OMRI	69592-13	DTH = 0, REI = 4 hr
Bacillus subtilis strain QST 713	Serenade Max OMRI	69592-11	DTH = 0, REI 4 hr
captan²	Captan 50WP	66330-234	DTH = 0, REI = 72 hr
	Captan 80WDG	66222-58-66330	DTH = up to day of harvest; REI = 72 hr
	Captec 4L	66330-239	DTH =up to day of harvest; REI = 48 hr
captan/fenhexamid	Captevate 68WDG	66330-48	DTH = 0, REI = 48 hr
chlorothalonil	Bravo Ultrex (82.5WDG)	50534-201-100	DTH = after full bloom or 42, REI = 12 hr
	Bravo WeatherStik	50534-188-100	DTH = after full bloom or 42, REI = 12 hr
	Echo 720	60063-7	DTH = 42, REI = 12 hr
	Equus DF	66222-149	DTH = after early bloom or 42, REI = 12 hr
chlorothalonil (continued)	Equus 720 SST	66222-154	DTH = after early bloom or 42, REI = 12 hr
	Equus 500 ZN	66222-150	DTH = after full bloom or 42, REI = 12 hr
copper hydroxide	Kocide 101 (50WP)	1812-288	DTH = B, PH⁵; REI = 24 hr
	Kocide DF (40DF)	1812-334	DTH = B, PH⁵; REI = 24 hr
	Kocide 4.5LF	1812-303	DTH = B, PH⁵; REI = 24 hr
	Kocide 2000 (35DF)	1812-358	DTH = B, PH⁵; REI = 24 hr
copper sulfate (basic)	Cuprofix Ultra 40 Disperss	70506-201	DTH = 0, REI = 12 hr
†cyprodinil/ﬂudioxonil³	†Switch (62.5WG)³	100-953	DTH = 0, REI = 12 hr
fenbuconazole	Indar 2F	62719-416	DTH = 30, REI = 12 hr
fenhexamid	Elevate (50WDG)	66330-35	DTH = 0, REI = 12 hr
fosetyl-Al	Aliette WDG (80 WDG)	264-516	DTH = 12 hours, REI = 12 hr
iprodione	Iprodione 4 L AG	66330-297	DTH = 0, REI = 24 hr
lime sulfur	Miller’s Lime Sulfur Solution 29%	66196-2-72	REI = 48 hr
	Sulforix	66196-3-72	REI = 48 hr
	AllPro Lime Sulfur Solution	769-558	REI = 48 hr
mefanoxam	Ridomil Gold EC	100-801	DTH = 0, REI = 48 hr.
phosphorous acid	Phostrol	55146-83	REI = 4 hr
potassium bicarbonate	Milstop OMRI	70870-1-68539	REI = 1 hr
	Kaligreen OMRI	11581-2	DTH = 1, REI = 4 hr
potassium phosphite	Prophyt	42519-22	DTH = 0, REI = 4 hr
	Helena Prophyt	42519-22-5905	DTH = 0, REI = 4 hr
propiconazole	Tilt	100-617	DTH = 30, REI = 12 hr
	Orbit	100-702	DTH = 30, REI = 12 hr
pyraclostrobin	Cabrio EG	7969-187	DTH = 0, REI = 12 hr
pyraclostrobin/boscalid	Pristine WG	7969-199	DTH = 0, REI = 12 hr
*Streptomyces lydicus WYEC 108*	Actinovate AG OMRI	73314-1	DTH = 0, REI = 1 hr or spray has dried
sulfur	Kumulus DF OMRI	51036-352-66330	REI = 24 hr
	Microthiol Disperss	70506-187	REI = 24 hr
	Thiolux Jet OMRI	100-1138	REI = 24 hr
*Trichoderma harzianum*	Rootshield WP	68539-7	DTH = none listed, REI = Until sprays have dried or dust has settled
ziram	Ziram Granuﬂo 6WDG	45728-12	DTH = 3 weeks after bloom; REI = 48 hr
	Ziram 76DF	70506-173	DTH = 3 weeks after bloom; REI = 48 hr
*WEED MANAGEMENT PRODUCTS*
carfentrazone-ethyl	Aim EC	279-3241	DTH = 0, REI = 12 hr
	Aim EW	279-3242
dichlobenil	Casoron 4G	400-168	REI = 12 hr
	Casoron CS	400-541	REI = 12 hr
ﬂuazifop-butyl	Fusilade DX	100-1070	DTH = 365; REI = 12 hr
flumioxazin	Chateau SW	59639-99	DTH = after onset of bloom; REI = 12 hr
	Chateau WDG	59639-119	DTH = after onset of bloom; REI = 12 hr
†glufosinate-ammonium	†Rely 200	264-660	DTH = 14, REI = 12 hr
glyphosate⁴	Roundup Original	524-445	DTH = 14, REI = 12 hr
	Roundup Original II	524-454	DTH = 14, REI = 12 hr
	Roundup Original Max	524-539	DTH = 14, REI = 4 hr
	Roundup Ultra	524-475	DTH = 14, REI = 4 hr
*glyphosate IPA plus carfentrazone-ethyl	*Rage	279-3307	DTH = 14, REI = 12 hr
hexazinone	Velpar DF	352-581	DTH = 90 (highbush); 450 (lowbush), REI = 48 hr
	Velpar L	352-392	DTH = 90 (highbush); 450 (lowbush), REI = 48 hr
napropamide	Devrinol 50DF	70506-36	DTH = 0, REI = 12 hr
	Devrinol 10G	70506-34	DTH = 0; REI = 12 hr
mesotrione	Callisto	100-1131	DTH = Do not apply after onset of bloom; REI = 12 hr
†norﬂurazon	†Solicam 80DF	100-849	REI = 12 hr
oryzalin	Surﬂan A.S.	70506-43	REI = 24 hr
	Surflan DF**	70506-46	REI = 24 hr
*paraquat	*Gramoxone Inteon	100-1217	REI = 24 hr
pelargonic acid	Scythe	62719-529	REI = 12 hr
*pronamide	*Kerb 50W	62719-397	REI = 24 hr
sethoxydim	Poast 1.5EC	7969-58	DTH = 30, REI = 12 hr
simazine	Princep Caliber 90WDG	100-603	REI = 12 hr
	Princep 4L	100-526	REI = 12 hr
*terbacil	*Sinbar 80WP	352-317	DTH = see label; REI = 12 hr
*OTHER BLUEBERRY PEST MANAGEMENT PRODUCTS*
dried blood deer and rabbit repellent	Plantskydd OMRI	25(b) pesticide	–
kaolin broad spectrum protectant	Surround WP OMRI	61842-18	DTH = 3 weeks after fruit set; REI = 4 hr
methyl anthranilate bird repellent	Fruit Shield	66550-1-8708
paraffinic oil broad spectrum protectant	JMS Stylet Oil	65564-1	REI = 4 hr
paraffinic oil broad spectrum protectant	Organic JMS Stylet Oil OMRI	65564-1	REI = 4 hr
plant extracts of Q. falcate, O. lindheimeri, R. aromatica and R. mangle nematicide	Nematec	59174-2-71965	REI = 12 hr
¹Other pyrethrin products may be labeled for the same purposes. ²Other captan products may be labeled for the same purposes. ³Use of Switch in Nassau and Suffolk Counties is limited to strawberries. ⁴ Other glyphosate products may be labeled for the same purposes. ⁵B=do not apply after bloom; PH=post-harvest sprays permitted. * = Restricted-use pesticide- may be purchased and used only by certified applicators or used by someone under the direct supervision of a certified applicator. † = Not for use in Nassau and Suffolk Counties. Pesticide labels that indicate ‘Not for use on Long Island, NY’ mean that use is prohibited in Nassau and Suffolk Counties only. **Do not Apply Surflan DF to lowbush blueberries. NOTE: With most pesticides, reentry is not allowed until spray material has dried. Read the label.

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Pest Management Guidelines A Cornell Cooperative Extension Publication	Cornell Guide for Pest Management of Berry Crops
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