Weekly Insect Bytes
WEEKLY INSECT BYTES for Sep 20, 2013
Unless noted otherwise, the insect pest control updates presented below are for the south-central part of Pennsylvania based on observation in Adams County, PA.
Current insect pest updates:
Ø Brown marmorated stink bug adults are actively feeding in many orchards and areas around orchards. The numbers of BMSB adults and nymphs collected in traps monitored by our entomology program are very high, much higher than during the 2012 season (as of Sep 20th). BMSB adults will continue feeding on fruit until mid-October. The assortment of effective BMSB insecticide options is limited and includes pesticides with only few distinctive modes of action: pyrethroids (IRAC Group 3A): Bifenture® and Brigade® (bifenthrin), Danitol® (fenpropathrin), and Warrior II ® (lambda-cyhalothrin); neonicotinoids (IRAC Group 4A): Actara® (thiametoxam), Assail® (acetamiprid), Belay® (clothianidin), Scorpion® and Venon® (dinotefuran); one carbamate product (IRAC Group 1A), Lannate® (methomyl) and some products including combinations of two different insecticide chemistries such as in Endigo ZC® (thiametoxam and lambda-cyhalothrin) or Leverage 360® (imidacloprid and beta-cyfluthrin). While trying to limit the impact of BMSB on fruit, please remember about seasonal limits for the number of insecticide applications (and total of specific active ingredient) per season. Please refer to the latest issue of the PSU Fruit Times Newsletter for more information related to late season BMSB management: http://extension.psu.edu/plants/tree-fruit/news/2013/pressure-from-stink-bugs-continues-in-apple-orchards.
Ø Commercially available traps and lures for BMSB monitoring provide valuable information and help to decide if insecticide treatments are needed to manage BMSB. Stink bug traps and lures from Ag-Bio (http://www.agbio-inc.com/dead-inn-pyramid-trap.html) and Sterling International (http://www.rescue.com/product/reusable-outdoor-stink-bug-trap) are available for purchase and should be very helpful with effective monitoring of BMSB adults and nymphs in orchards. Although traps by themselves will not control BMSB, by capturing adults and nymphs, traps can be utilized as an effective warning system in orchards.
Ø The 2013 season biofix for the Oriental fruit moth was established on April 17; spotted tentiform leafminer on April 9, codling moth on May 6, tufted apple bud moth on May 9; and obliquebanded leafroller on May 30th.
Prepared by Dr. Greg Krawczyk PSU Department of Entomology, Fruit Research and Extension Center, Biglerville, PA.