Posted: August 27, 2012
Brown Marmorated Stink Bug
Please remember that the pressure from the brown marmorated stink bug (BMSB) can extend into late fall, and the need for the control could extend into September or even October. Visual monitoring remains the most reliable scouting technique, although at this time of the season the commercially available traps are also effective in monitoring local BMSB populations. Bifenthrin (IRAC Group 3A, pyrethroid), recently received an Emergency Section 18 exemption registration for use on apple, peach and nectarine to control brown marmorated stink bug (valid until Oct 15, 2012). Three insecticides containing this active ingredient--Brigade WSB, Bifenture EC and Bifenture 10DF--are very effective in controlling nymphs and adults of BMSB. Another active ingredient, dinotefuran (IRAC Group 4A), under the names Scorpion and Venom, is also available under Section 18 Emergency Exemption registration for the control of BMSB during the 2012 season.
Codling Moth and Oriental Fruit Moth
Only on site codling moth (CM) monitoring will provide accurate information if additional control treatments are necessary. Please see the July Fruit Times Newsletter for detailed recommendations related to the control of CM and other late summer pests. Please use pheromone traps and visual observations to decide if additional control of Oriental fruit moth is necessary.
European Red Mite
European red mites (ERM) already started to deposit their overwintering eggs, and in some orchards excessive populations of this spider mite caused significant bronzing on the foliage. If control of ERM or two-spotted mite populations is warranted, acaricides such as Acramite, Envidor, Portal, and Kanemite are registered and still can be considered for mite control at this time of the season.
- Extension Tree Fruit Entomologist