Blueberry Insect Monitoring Report April 21, 2017

— Written By Grant Palmer

As it is still early in the growing season, trap captures are low. This will be a particularly interesting year for scouting due to the cold snap that hit North Carolina after the period of unusually warm weather. Some blueberry blooms that had opened early were hit hard by the cold, so we are curious to see if trap captures present a similar trend of damage to pest populations that may have also emerged early.

Six total blueberry fields are being monitored with five trapping stations at each field site and each station consisting of one spotted wing drosophila (SWD) trap baited with a yeast sugar-water mixture, one white “wing” sticky trap baited with a pheromone lure attractive to male cranberry fruitworm moths, one white “wing” trap baited with a pheromone lure attractive to male cherry fruitworm moths, and one yellow sticky trap baited with ammonium bicarbonate to attract blueberry maggot flies.

Male Spotted Wing Drosophila fly

Male spotted-wing drosophila fly caught in a yeast/sugar water trap. Photo: Grant Palmer

The average number of the total pests captured per site per day are presented in the figures below. YSW refers to traps baited with “yeast/sugar water.” SWD refers to “spotted wing drosophila.”

During this trapping period, 11 SWD were captured at New Hanover 1, 19 SWD were captured at Pender 1, 18 SWD were captured at Bladen 3, 2 SWD were captured at Bladen 1, 6 SWD were captured at Bladen 4, and 4 SWD were captured at Sampson 1.

Spotted Wing Drosophila trap data 4/21/17

During this trapping period, 1 cranberry fruitworm moth was captured at Bladen 3.

Cranberry Fruitworm data 4/21/17

No cherry fruitworm moths were captured during this trapping period.

Cherry Fruitworm trap data 4/21/17

No blueberry maggot flies were captured during this trapping period.Bluebrrry Maggot trap data 4/21/17

More information

DIY Blueberry Maggot MonitoringNC Small Fruit & Specialty Crop IPM

DIY SWD Monitoring – NC Small Fruit & Specialty Crop IPM

Cranberry FruitwormEntomology Portal

Cherry FruitwormEntomology Portal