Oriental Fruit Moth (OFM): Trap counts still show captures above the treatment threshold of 6/trap. Treatments are needed anywhere trap counts exceed 6 males per trap, even at this late stage of the season on any variety that is at least 7-10 days away from harvest. All materials used to treat for tufted apple budmoth (see below) should also control OFM. Locations where mating disruption is in use still have very low to “0” trap captures.
Tufted Apple Budmoth (TABM): If you had very high trap captures during the first flight, then you may wish to target insecticides for the second flight. These are due in southern counties by the beginning of August:
|TABM 2nd Generation Timing|
|County or Region||Degree Days by 8/18 base 45||Conventional,
AM – 4 middles
EM – 2 completes
EM – 2 completes
EM – 2 completes
|2nd 8/14-16||2nd 8/14-16||2nd 8/12-14
|2nd 8/18-20||2nd 8/18-20||2nd 8/16-18
Cat-facing Insects, Tarnished Plant Bug (TPB) and Brown Marmorated Stink Bug (BMSB): BMSB traps show only very low levels of bugs. Tarnished plant bugs and some native stink bugs are being seen, particularly in ground cover with flowering weeds and seed heads. Some older BMSB nymphs and a few adults are being seen in traps, leading us to think that there will be higher populations in the near future, as adults mature and move into orchards.
Codling Moth (CM): Trap counts exceed treatment thresholds on a few farms. Applications using effective materials such as Delegate and Altacor, and Voliam products should be continued where populations are high or above 5 moths per trap. If codling moth is particularly troublesome, then applications of Madex alternated with the insecticide program may be helpful.
Tree Fruit Trap Counts – Southern Counties
Tree Fruit Trap Counts – Northern Counties
Spotted Wing Drosophila (SWD): As the Elliot harvest is ending, SWD populations continue to increase. Program-wide averages of males showed a high count of 123 males per trap, with an average of 10.38 males per trap.
Sharpnosed Leafhopper (SNLH): SNLH showed a significant increase over the previous week. Average trap captures rose from .44 to 1.95 adults per trap, with high of 24 adults per trap. This is the second generation flight. Unlike previous years, we have seen very few adults in Burlington County. Most of our trap captures are in various sites in Atlantic County. From this point forward we are reducing the number of traps being monitored and maintaining a specific number in Atlantic County that have a history of SNLH captures. This DOES NOT mean that Burlington County growers should not be concerned; only that we are using the locations with the highest populations to define the second flight timing and consequently treatment suggestions. Growers with a history of blueberry stunt disease should plan on SNLH treatments anytime over the next week.
Blueberry Trap Counts
|Week Ending||CBFW||SNLH||OB||BBM||SWD males|
CBFW-cranberry fruitworm, SNLH – sharpnosed leafhopper, OB – oriental beetle, BBM – blueberry maggot, SWD – spotted wing drosophila
Grape Berry Moth (GBM):
As indicated last week a 4th generation treatment is due this week in southern counties. The ideal time to use Intrepid, Altacor, Voliam products or Delegate was the middle of the week, but other products can also be used up through about Monday 8/22.
Grape Trap Counts -3 locations, 6 blocks in southern counties
|Week Ending||Grape Berry Moth||Grape Root Borer|