Blueberry Insect Monitoring Report, 12 May 2017
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Trap captures this week were low for all four of the insects which we are monitoring. With the fruit at several sites, the risk of infestation must be carefully evaluated; particularly for spotted wing drosophila due to its potential impact during harvest.
Cherry and cranberry fruitworm injury is clearly visible due to the large holes that are left in berries by their feeding. This allows damaged berries to be easily screened and removed during harvest, making them less of a problem for distribution.
So far no blueberry maggot flies have been found at any of our trapping locations.
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.
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, 1 SWD was captured at New Hanover 1, 1 SWD was captured at Pender 1, 4 SWD were captured at Bladen 3, 0 SWD were captured at Bladen 1, 0 SWD were captured at Bladen 4, and 0 SWD were captured at Sampson 1.
No cranberry fruitworm moths were captured during this trapping period.
No cherry fruitworm moths were captured during this trapping period.