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.
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 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	3.2.8.1

Table 3.1.2. Chemical and brand names of labeled fungicides, insecticides, and miticides for blueberries.
(DTH= days to harvest; REI= Restricted Entry Interval)
Chemical Name	Brand Name/Formulation	EPA Reg. Number	Restrictions
*azinphos-methyl	*Guthion 50WP	264-733	DTH = 7, REI = 7 days
azoxystrobin	Abound 2.08F	100-1098	DTH = 0, REI = 4 hr
Bacillus thuringiensis (B.t.)	Javelin WG	70051-66	DTH = 0, REI = 4 hr
	Deliver	70051-69
	Dipel DF	73049-39
captan	Captan 50WP	51036-166	DTH = 0, REI = 96 hr
	Captan 80WP	51036-168	DTH = 0, REI = 72 hr
	Captec 4L	51036-181	DTH = 0, REI = 72 hr
	Many others
captan/fenhexamid	Captevate 68WDG	66330-48	DTH = 0, REI = 72 hr
carbaryl	Sevin 4F	264-349	DTH = 7, REI = 12 hr
	*Sevin 80WSP	264-526
	Sevin XLR	264-333
	Carbaryl 80S	19713-50
	Carbaryl 4L	19713-49	DTH = 7, REI = 12 hr
	Carbaryl 4L	347

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